Temat: quality analysis - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effect of water scarcity on households’ livelihoods in Iwoye-Ketu Area of Ogun State, Nigeria
Wpływ deficytu wody na poziom życia w gospodarstwach domowych na obszarze Iwoye-Ketu w nigeryjskim stanie Ogun
Autorzy:: Aromolaran, Adetayo K.
Ademiluyi, Ibiyinka O.
Sotola, Abiodun E.
Wole-Alo, Felicia I.
Aromiwura, Oluwadamilola A.
Ogunsuyi, Olubukola E.
Powiązania:: https://bibliotekanauki.pl/articles/292360.pdf
Data publikacji:: 2019
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: Iwoye-Ketu
livelihoods
perceived effects
water quality analysis
water scarcity
water sources
analiza jakości wody
deficyt wody
odczuwane skutki
poziom życia
źródła wody
Opis:: Water is an essential commodity which affects life and livelihoods in the universe. This study examined perceived effect of water scarcity on livelihoods in Iwoye-Ketu, Ogun State. Random sampling was used to select 80 rural households and water samples for the study. Data collected were analysed using descriptive, inferential and laboratory analyses. Findings showed that the mean age of respondents was 38 years with an average household size of four persons. The major sources of water were boreholes (97.5%) and rainwater (90.0%), the average trekking time to the water source was 24 minutes and the households requires an average of 162 litres of water per day. Water analysis’ result showed that the water has pH (6.87), total dissolved solids (0.175 mg∙dm^–3), temperature (29.9°C) and turbidity (0.6 FTU). The major causes of water scarcity include insufficient rainfall (97.5%), increased sunlight intensity (97.5%), pollution of water sources (95.0%) and increased population (93.8%). About 60% of them perceived water scarcity to have a negative effect on their livelihoods. Correlation analysis shows that there is a significant relationship between usage of water (r = 0.370, p < 0.01) and perceived effect of water scarcity. It was concluded that water available for household use is not sufficient, although it is safe but contain some elements which are not of World Health Organization standard for good potable water. It is recommended that the community should build a hub for water collection and distribution close to the village centre and the government should provide water infrastructures to increase the supply of potable water.
Woda jest podstawowym dobrem, które wpływa na życie i warunki życia na świecie. W przedstawionej pracy badano wpływ deficytu wody na poziom życia w Iwoye-Ketu w stanie Ogun. Do badań losowo wybrano 80 wiejskich gospodarstw i próby wody. Zebrane dane analizowano za pomocą metod opisowych, wnioskowania i metod laboratoryjnych. Średni wiek respondentów wynosił 38 lat, a średnia wielkość gospodarstwa – 4 osoby. Głównym źródłem wody były studnie wiercone (97,5%) i opady deszczu (90,0%). Średni czas dojścia do źródła wody wynosił 24 minuty, a gospodarstwa zużywały średnio 162 dm³ wody na dzień. Woda miała pH 6,87, sumę substancji rozpuszczonych 0,175 g∙dm^–3, temperaturę 29,9°C i mętność 0,6 FTU. Do głównych przyczyn niedostatku wody zaliczano niewystarczające opady (97,5%), silne nasłonecznienie (97,5%), zanieczyszczenie źródeł wody (95,0%) i przeludnienie (93,8%). Około 60% respondentów uważało, że niedostatek wody wywiera ujemny wpływ na ich poziom życia. Analiza korelacji wykazała, że istnieje istotna zależność (r = 0,370, p < 0,01) między zużyciem wody a odczuciem negatywnego wpływu jej braku. Stwierdzono, że woda jest dostępna gospodarstwom w niedostatecznej ilości i choć bezpieczna, to zawiera pewne składniki, które nie spełniają norm Światowej Organizacji Zdrowia ustalonych dla wody pitnej. Zaleca się, aby lokalna społeczność zbudowała miejsce gromadzenia i dystrybucji wody blisko centrum wsi, a rząd powinien zapewnić infrastrukturę w celu poprawy zaopatrzenia w wodę pitną.
Źródło:: Journal of Water and Land Development; 2019, 43; 9-18
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Analysis of groundwater quality in the lower Soummam Valley, North-East of Algeria
Autorzy:: Ghodbane, Messaoud
Benaabidate, Lahcen
Boudoukha, Abderrahmane
Gaagai, Aissam
Adjissi, Omar
Chaib, Warda
Aouissi, Hani Amir
Powiązania:: https://bibliotekanauki.pl/articles/2174331.pdf
Data publikacji:: 2022
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: Algeria
analysis of groundwater quality
hydrochemical data
multivariate statistical analysis
Soummam Valley
Opis:: Analysis of groundwater quality in the alluvial aquifer of the lower Soummam Valley, North-East of Algeria, was realised through the application of multivariate statistical methods: hierarchical cluster analysis (HCA) in Q and R modes, factorial correspondence analysis (FCA), and principal component analysis (PCA), to hydrochemical data from 51 groundwater samples, collected from 17 boreholes during periods of June, September 2016 and March 2017. The objectives of this approach are to characterise the water quality and to know the factors which govern its evolution by processes controlling its chemical composition. The Piper diagram shows two hydrochemical facies: calcium chloride and sodium bicarbonate. Statistical techniques HCA, PCA, and FCA reveal two groups of waters: the first (EC, Ca2+, Mg2+, Cl-, SO42- and NO3-) of evaporitic origin linked to the dissolution processes of limestone rocks, leaching of saliferous soils and anthropogenic processes, namely contamination wastewater and agricultural activity, as well marine intrusion; and the second group (Na+, K+, and HCO3-) of carbonated origin influenced by the dissolution of carbonate formations and the exchange of bases. The hermodynamic study has shown that all groundwater is undersaturated with respect to evaporitic minerals. On the other hand, it is supersaturated with respect to carbonate minerals, except for water from boreholes F9, F14, and F16, which possibly comes down to the lack of dissolution and arrival of these minerals. The results of this study clearly demonstrate the utility of multivariate statistical methods in the analysis of groundwater quality.
Źródło:: Journal of Water and Land Development; 2022, 54; 1--12
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Evaluation of groundwater in aluminium slag disposal area
Autorzy:: Putranto, Thomas Triadi
Febriane, Wenny
Powiązania:: https://bibliotekanauki.pl/articles/27312652.pdf
Data publikacji:: 2023
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: aluminium slag waste
geospatial analysis
heavy metals pollution index
multivariate analysis
water quality index
Opis:: Aluminium slag waste is a residue from aluminium recycling activities, classified as hazardous waste so its disposal into the environment without processing can cause environmental problems, including groundwater pollution. There are 90 illegal dumping areas for aluminium slag waste spread in the Sumobito District, Jombang Regency. This study aims to evaluate the quality of shallow groundwater surrounding aluminium slag disposal in the Sumobito District for drinking water. The methods applied an integrated water quality index (WQI) and heavy metal pollution index (HPI), multivariate analysis (principal component analysis (PCA) and hierarchical clustering analysis (HCA)), and geospatial analysis for assessing groundwater quality. The field campaign conducted 40 groundwater samples of the dug wells for measuring the groundwater level and 30 of them were analysed for the chemical contents. The results showed that some locations exceeded the quality standards for total dissolved solids (TDS), electrical conductivity (EC), and Al2+ . The WQI shows that 7% of dug well samples are in poor drinking water condition, 73% are in good condition, and 20% are in excellent condition. The level of heavy metal contamination based on HPI is below the standard limit, but 13.3% of the water samples are classified as high contamination. The multivariate analysis shows that anthropogenic factors and natural sources/geogenic factors contributed to shallow groundwater quality in the study area. The geospatial map shows that the distribution of poor groundwater quality is in the northern area, following the direction of groundwater flow, and is a downstream area of aluminium slag waste contaminants.
Źródło:: Journal of Water and Land Development; 2023, 57; 78--90
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The correlation of water quality parameters over wireless sensors generated dataset in the Sitnica River in Kosovo
Autorzy:: Ahmedi, Figene
Makolli, Shkumbin
Powiązania:: https://bibliotekanauki.pl/articles/28411654.pdf
Data publikacji:: 2023
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: monitoring
parameters’ pair
regression analysis
water quality
wireless sensor
Opis:: In this paper, the regression analysis technique is applied to a large water quality dataset for the Sitnica River in Kosovo. It has been done to assess the correlation between water quality parameters. The data are generated by a wireless sensors network deployed in Sitnica. A regression analysis is applied to four water quality parameters: temperature, dissolved oxygen, pH, and electrical conductivity. The correlation between each pair of parameters has been assessed by using the WEKA software package, which is a popular time-saving tool for data analysis in distinct domains. The data are pre-processed to exclude out-of-range values and then the assessment of correlation for the pairs of parameters is applied. In comparison to other pairs of water quality parameters, the results show that dissolved oxygen and electrical conductivity correlate particularly closely with temperature. Regression equations of these two pairs of parameters may provide inferred information on dissolved oxygen and electrical conductivity about the Sitnica River. Such information may otherwise not be available to resource managers in Kosovo. Moreover, due to its easy to use and availability as an open-source software, WEKA may aid decision-makers on the management providing almost real-time information about surface water quality within the basin. This can be particularly useful especially in the case of continuous observation of water quality and a huge dataset gathered by using wireless sensors.
Źródło:: Journal of Water and Land Development; 2023, 59; 8--12
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Physicochemical characterization of synclinal spring water of Taoura, region of Souk Ahras – North East Algeria
Autorzy:: Bouhafs, Fatma
Laraba, Abdelaziz
Powiązania:: https://bibliotekanauki.pl/articles/1841971.pdf
Data publikacji:: 2021
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: chemistry
principal component analysis
PCA
pollution
springs
Taoura
water quality
Opis:: The springs of the Taoura region flow from a syncline shaped structure. All resources in the region were mobilized as a result of increased demand. However, the development of anthropic activities and population growth in the area pose risk for groundwater. Analytical results obtained from a series of samplings in November 2017–April 2018, express the quality of water suitable for the irrigation of agricultural land. The highest values are recorded in April 2018 at 20.5 to 21.6°C and pH of 8.0 to 8.2. The study recorded high electrical conductivity from 1390 to 1495 μS∙cm–1 and TDS from 1270 to 1500 mg∙dm–3 in November 2017, which shows important mineralization that characterizes spring water. Physical parameters were measured in situ using a HORIBA multi-parameter probe. Chemical analyses were carried out using NFT 90-005 titration, and nitrogen parameters by DIN 38405-D92 spectrophotometry. Maximum levels of nitrates and phosphates were recorded at 228 and 18.4 mg∙dm–3 respectively. The principal component analysis (PCA) showed a good correlation of the November 2017 period with mineralization parameters. Moreover, there is a strong correlation between the wet period and pollution factors. The two methods of analysis has allowed to distinguish three groups of geochemical water types: a bicarbonate calcium group typical for waters having transited in carbonate horizons. A second chloride calcium group shows basic exchange between water and clay levels, and the third chloride bicarbonate calcium group reveals an enrichment in calcium and chloride, which reflects water circulation with an exchange of the carbonated and evaporitic sedimentary rock matrix.
Źródło:: Journal of Water and Land Development; 2021, 50; 27-37
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Hydrochemical characterisation of groundwater using multifactorial approach in Foum el Gueiss basin, Northeastern Algeria
Autorzy:: Lakhdari, Somia
Kachi, Slimane
Valles, Vincent
Barbiero, Laurent
Houha, Belgacem
Yameogo, Suzanne
Jabrane, Meryem
Dali, Naouel
Powiązania:: https://bibliotekanauki.pl/articles/2073746.pdf
Data publikacji:: 2022
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: discriminant analysis
Foum El Gueiss
groundwater quality
hydrochemistry
irrigated agriculture
Opis:: Knowledge of the quantity and quality of groundwater is a prerequisite to encourage investment in the development of a region and to consider the sedentarisation of populations. This work synthesises and analyses data concerning the chemical quality of the available water acquired in the Foum el Gueiss catchment area in the Aures massif. Two families of waters are observed, on the one hand, calcium and magnesian chlorated-sulphate waters and on the other hand, calcium and magnesium bicarbonate waters. Multivariate statistical treatments (Principal Component Analysis – PCA and Discriminant Analysis – DA) highlight a gradient of minerality of the waters from upstream to downstream, mainly attributed to the impact of climate, and pollution of agricultural origin rather localised in the lower zones. These differences in chemical composition make it possible to differentiate spring, well and borehole waters. The main confusion is between wells and boreholes, which is understandable because they are adjacent groundwater, rather in the lower part of the catchment area. The confusion matrix on the dataset shows a complete discrimination with a 100% success rate. There is a real difference between spring water and other samples, while the difference between wells and boreholes is smaller. The confusion matrix for the cross-validation (50%).
Źródło:: Journal of Water and Land Development; 2022, 52; 60--65
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: The impact of water quality on the availability of phytoplankton and growth of Litopenaeus vannamei
Autorzy:: Musa, Muhammad
Thoyibah, Auliarifka A.
Puspitaningtyas, Dyah A.
Arsad, Sulastri
Mahmudi, Mohammad
Lusiana, Evellin D.
Maftuch, Maftuch
Huda, Agus S.
Powiązania:: https://bibliotekanauki.pl/articles/2203547.pdf
Data publikacji:: 2023
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: algae
aquaculture
canonical correspondence analysis
CCA
dynamics of water quality
principal component analysis
PCA
vannamei shrimp
Opis:: This research analysed the availability of phytoplankton and the growth rate of Vannamei shrimp in relation to water quality changes. The research was carried out in February-March 2021 for a half cycle of shrimp cultivation in two ponds of the Brackish Water Fish Culture Probolinggo Laboratory in Probolinggo, East Java, Indonesia. The research used a descriptive method and included a survey. Sampling was made every two weeks for two months. Nine parameters were measured and ten shrimps were taken for a specific growth rate (SGR) measurement once per sampling. Data were analysed using the principal component analysis (PCA) and canonical correspondence analysis (CCA). Secondary data of water quality were added for the PCA. The results show that the phytoplankton found in the first pond consisted of Chlorophyta, Chrysophyta, and Cyanophyta, whereas the phytoplankton in the other pond included Chlorophyta, Chrysophyta, Cyanophyta, and Dinophyta. The abundance of phytoplankton ranged from 12-80∙103 cell∙cm-3, which indicated eutrophic waters. The PCA demonstrated that pH, nitrate, and total organic matter (TOM) significantly influenced phytoplankton abundance in the pond. In addition, water quality parameters, such as temperature, transparency, salinity, nitrite and phosphate levels, were tolerable in both ponds for the growth of shrimps. However, the level of pH was lower than the aquaculture quality standard, whereas those of nitrate, ammonia, and TOM were higher. The growth rate of Vannamei shrimp increased by 0.76–7.34%∙day-1.
Źródło:: Journal of Water and Land Development; 2023, 56; 127--135
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Evaluation of water treatment plants quality in Basrah Province, by factor and cluster analysis
Autorzy:: Al Saad, Zainb A.A.
Hamdan, Ahmed N.A.
Powiązania:: https://bibliotekanauki.pl/articles/293213.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: cluster analysis (CA)
factor analysis (FA)
multivariate statistics
the Shatt Al Arab River
water quality
water treatment plant
Opis:: The Shatt Al Arab River (SAAR) is a major source of raw water for most water treatment plants (WTP’s) located along with it in Basrah province. This study aims to determine the effects of different variables on water quality of the SAAR, using multivariate statistical analysis. Seventeen variables were measured in nine WTP’s during 2017, these sites are Al Hussain (1), Awaissan (2), Al Abass (3), Al Garma (4), Mhaigran (5), Al Asmaee (6), Al Jubaila (7), Al Baradia (8), Al Lebani (9). The dataset is treated using principal component analysis (PCA) / factor analysis (FA), cluster analysis (CA) to the most important factors affecting water quality, sources of contamination and the suitability of water for drinking and irrigation. Three factors are responsible for the data structure representing 88.86% of the total variance in the dataset. CA shows three different groups of similarity between the sampling stations, in which station 5 (Mhaigran) is more contaminated than others, while station 3 (Al Abass) and 6 (Al Asmaee) are less contaminated. Electrical conductivity (EC) and sodium adsorption ratio (SAR) are plotted on Richard diagram. It is shown that the samples of water of Mhaigran are located in the class of C4-S3 of very high salinity and sodium, water samples of Al Abass station, are located in the class of C3-S1 of high salinity and low sodium, and others are located in the class of C4-S2 of high salinity and medium sodium. Generally, the results of most water quality parameters reveal that SAAR is not within the permissible levels of drinking and irrigation.
Źródło:: Journal of Water and Land Development; 2020, 46; 10-19
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Spatio-temporal changes in water quality in an eutrophic lake with artificial aeration
Przestrzenne i czasowe zmiany jakości wody w eutroficznym jeziorze ze sztucznym napowietrzaniem
Autorzy:: Ferral, A.
Solis, V.
Frery, A.
Orueta, A.
Bernasconi, I.
Bresciano, J.
Scavuzzo, C. M.
Powiązania:: https://bibliotekanauki.pl/articles/293175.pdf
Data publikacji:: 2017
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: eutrophication
phosphates
projection techniques
statistical analysis
thermal stratification
time series
water quality
analiza statystyczna
eutrofizacja
fosforany
jakość wody
stratyfikacja termiczna
szeregi czasowe
techniki projekcji
Opis:: In this work we present novel results concerning water quality changes in an eutrophic water body connected with an artificial aeration system installed in it. Sixty one in-situ and laboratory measurements of biogeochemical variables were recorded monthly between October 2008 and June 2011 to evaluate temporal and spatial changes in San Roque reservoir (Argentina). t-Student mean difference tests, carried out over the whole period, showed with 95% confidence that a monitoring point located at the centre of the water body is representative of the chemical behaviour of the reservoir. Thermal stratification was observed in all sampling sites in the summer, but the frequency of these episodes was markedly lower in bubbling zones. Mean chlorophyll-a concentrations were 58.9 μg∙dm^–3 and 117.0 μg∙dm^–3 in the absence and in the presence of thermocline respectively. According to the t-Student test, this difference was significant, with p < 0.001. Phosphate release from sediments was corroborated under hypoxia conditions. ANOVA one way analysis did not show significant spatial differences for any variable. Mean normalize spatial index (MENSI) was developed to compare data from different regions affected by high temporal variability. It proved to be useful to quantify spatial differences. Structure analysis of temporal series was used to scrutinize both chemical and spatial association successfully. Three chemically different zones were determined in the reservoir. This study demonstrated that spatial comparisons by means of marginal statistics may not be an adequate method when high temporal variation is present. In such a case, temporal structure analysis has to be considered.
W pracy przedstawiono oryginalne wyniki dotyczące zmian jakości wody w eutroficznym zbiorniku wodnym związanych z zainstalowanym tam systemem sztucznego napowietrzania. Od października 2008 do czerwca 2011 r. dokonywano co miesiąc in situ i w laboratorium 61 pomiarów parametrów biogeochemicznych aby ocenić czasowe i przestrzenne zmiany w zbiorniku San Roque (Argentyna). Testy t-Studenta prowadzone dla całego okresu badawczego wykazały z 95-procentowym poziomem ufności, że stanowisko monitoringu zlokalizowane w centrum zbiornika wodnego jest reprezentatywne dla właściwości chemicznych całego zbiornika. Stratyfikację termiczną obserwowano latem we wszystkich stanowiskach badawczych, ale częstość wystąpień tych epizodów była znacząco mniejsza w strefie napowietrzania. Średnie stężenie chlorofilu a wynosiło 58,9 μg∙dm^–3 i 117,0 μg∙dm^–3 odpowiednio w warunkach braku i w warunkach występowaniu termokliny. Różnica wg testu t-Studenta była statystycznie istotna, gdy p < 0,001. Stwierdzono uwalnianie fosforanów z osadów w warunkach deficytu tlenowego. Jednoczynnikowa analiza ANOVA nie wykazała istotnego zróżnicowania przestrzennego żadnego z mierzonych parametrów. Utworzono średni znormalizowany indeks przestrzenny (MENSI) do porównania danych cechujących się dużą zmiennością czasową pochodzących z różnych regionów. Indeks okazał się użyteczny do ilościowego przedstawienia różnic przestrzennych. Przeprowadzono analizę struktury szeregów czasowych, aby przeanalizować powiązanie cech chemicznych ze zmiennością przestrzenną. Wyodrębniono trzy chemicznie odmienne strefy zbiornika. Badania wykazały, że analiza przestrzenna za pomocą statystyki jednoczynnikowej może nie być odpowiednią metodą w warunkach dużej zmienności czasowej. W takim przypadku należy rozważyć analizę struktury czasowej.
Źródło:: Journal of Water and Land Development; 2017, 35; 27-40
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Hydro-chemical and microbiological characterization of Lower Cretaceous waters in a semi-arid zone Beni-Ounif syncline, South-West of Algeria
Hydrochemiczna i mikrobiologiczna charakterystyka wód dolnej kredy w półsuchej strefie synkliny Beni-Ounif w południowozachodniej Algierii
Autorzy:: Merzougui, Fatima Zahra
Makhloufi, Ahmed
Merzougui, Touhami
Powiązania:: https://bibliotekanauki.pl/articles/292610.pdf
Data publikacji:: 2019
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: Beni-Ounif
groundwater
hierarchical cluster analysis (HCA)
hydro-chemical characterization
Lower Cretaceous
microbiological characterization
principal component analysis (PCA)
water quality
analiza składowych głównych (PCA)
charakterystyka hydrochemiczna
charakterystyka mikrobiologiczna
dolna kreda
hierarchiczna analiza skupień (HCA)
jakość wody
wody gruntowe
Opis:: The article analyses the water quality of the Lower Cretaceous aquifer in the Beni-Ounif syncline. To this end, 42 samples were taken for physico-chemical analysis and 28 for microbiological analysis in March, May and October 2017 from 14 sampling points. The results of physico-chemical analysis were processed by multi-variety statistical analysis methods: principal component analysis (PCA) and hierarchical cluster analysis (HCA) coupled to hydro chemical methods: Piper diagram. The PCA allowed us to explore the connections between physico-chemical parameters and similarities between samples and to identify the most appropriate physico-chemical elements to describe water quality. The HCA allowed us to classify the sampling points according to the similarity between them and thus reduce them for the next follow-up analysis. Waters of the syncline are characterized by medium to low mineralization (320 < EC < 7600 μS∙cm^–1 and 200 < RS < 4020 mg∙dm^–3) and hardness of between 22 and 123°f. Only 19% of the samples show NO₃ concentrations exceeding the Algerian standards. Microbiologically, the study reports the presence of bacteria: coliforms (<8 CFU∙0.1 dm^–3), Streptococcus D (<1100 CFU∙0.1 dm^–3), Clostridium sulphito-reducer of vegetative form (<90 CFU∙0.02 dm^–3) and sporulate (<4 CFU∙0.02 dm^–3), total aerobic mesophilic flora at 22°C (<462 CFU∙0.001 dm^–3) and at 37°C (<403 CFU∙0.001 dm^–3). It must be noted that no presence of thermo-tolerant coliforms is observed.
W artykule przedstawiono wyniki analizy jakości wody z poziomu wodonośnego dolnej kredy w synklinie Beni-Ounif. W tym celu pobrano 42 próbki wody do analiz fizycznych i chemicznych oraz 28 próbek do analiz mikrobiologicznych z 14 stanowisk w marcu, maju i październiku 2017 r. Wyniki analiz fizycznych i chemicznych przetworzono za pomocą wieloczynnikowych metod statystycznych: analizy czynników głównych (PCA) i hierarchicznej analizy skupień (HCA) połączonej z metodami hydrochemicznymi, z diagramem Pipera. Analiza PCA umożliwiła zbadanie powiązań między parametrami fizycznymi i chemicznymi oraz podobieństwa między próbkami, a także identyfikację parametrów najbardziej odpowiednich do opisu jakości wody. Wykorzystując HCA, sklasyfikowano stanowiska według ich wzajemnego podobieństwa oraz zredukowano ich liczbę do przyszłych analiz. Wody synkliny charakteryzowały się małą do średniej mineralizacją (320 < EC < 7600 μS∙cm^–1 i 200 < RS < 4020 mg∙dm^–3) i twardością między 22 i 123°f. Tylko 19% próbek wykazywało stężenie azotanów przekraczające algierskie normy. W badanych wodach stwierdzono obecność bakterii z grupy Coli (<8 jtk∙(0,1 dm³)^–1), Streptococcus D (<1100 jtk∙(0,1 dm³)^–1), wegetatywnych form (<90 jtk∙(0,02 dm³)^–1) i przetrwalników (<4 jtk∙(0,02 dm³)^–1) Clostridium oraz całkowitej mezofilnej flory aerobowej w temperaturze 22°C (<462 jtk∙(0,001 dm³)^–1) i 37°C (<403 jtk∙(0,001 dm³)^–1). Należy dodać, że nie stwierdzono obecności termoodpornych bakterii z grupy Coli.
Źródło:: Journal of Water and Land Development; 2019, 40; 67-80
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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