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Wyszukujesz frazę "El Qryefy, Mohamed" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Salinisation process of Lake Sidi Boughaba, Kenitra, North Western, Morocco: A statistical approach
Autorzy:
Lachhab, Mohamed
Najy, Mohamed
Talbi, Fatima Zahra
Taouraout, Aziz
El Qryefy, Mohamed
Ech-Chafay, Hassan
Belghyti, Driss
El Kharrim, Khadija
Powiązania:
https://bibliotekanauki.pl/articles/2174357.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
Kenitra
marine aerosol
Morocco
salinisation
Sidi Boughaba Lake
Opis:
In order to determine the nature of the high salinisation rate of the waters of Lake Sidi Boughaba, which has been listed in the Ramsar list since 1980, 23 samples that were taken during four sampling operations were subjected to physicochemical analyses. The obtained results were processed using a combination of bi-varied methods (correlation tests) and multivariate statistical methods (principal component analysis - PCA). The physicochemical analyses reveal that they are alkaline waters with a pH ranging between 8.38 and 9.03, an electrical conductivity (EC) of the order of 12.4 to 17.4 mS∙cm-1, and high levels of Na+ and Cl-, up to 3700 and 6630 mg∙dm-3 respectively, indicating a marine origin of these waters. In addition, the statistical treatment revealed that the mineralisation of the waters of this ecosystem is controlled by four main mechanisms of the salinisation; the main mechanism underlying this strong mineralisation is due to the impact of the marine spray. The second-order processes are about the phenomenon of the ion exchange, the dissolution/precipitation of evaporitic and carbonate formations, the oxidation-reduction processes, notably the reduction of sulphates as well as biochemical phenomena due to the selective absorption of certain ions by fauna and flora.
Źródło:
Journal of Water and Land Development; 2022, 54; 194--200
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrochemical characteristics and water quality assessment of Lake Dayet Erroumi – Khemisset, Morocco
Autorzy:
El Qryefy, Mohamed
Ouardi, Jamila
Najy, Mohamed
Belghyti, Driss
El Kharrim, Khadija
Powiązania:
https://bibliotekanauki.pl/articles/1844350.pdf
Data publikacji:
2021
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
Dayet Erroumi
hydrochemical characteristics
Morocco
salinity
water quality
Opis:
The objective of this paper is to study the hydrochemical characteristics of Lake Dayet Erroumi (Khemisset, Morocco). Three sampling campaigns were carried out in April, July and November 2019. The temperature, pH and electrical conductivity were measured in situ using Hanna Instruments HI 98280. Concentrations of calcium, magnesium, carbonate, bicarbonate and chloride were analysed by the volumetric method. The atomic absorption technique was used to determine sodium, potassium, nitrate and sulphate. The physico-chemical analysis of the water indicates that the pH is basic. The nitrate and sulphate concentrations show that the water is of good quality according to Moroccan surface water guidelines. Furthermore, the hydrochemical facies of water is of the sodium-chloride type according to the Piper diagram. The value of the electrical conductivity indicates that the lake water has high salinity. The high mineralization of water is explained by the leaching from evaporitic rocks in the region. The principal component analysis shows that the spatial and temporal variation in salinity constitutes the major phenomenon of the hydrochemical characteristics of this lake. Salinity varies inversely with the pH value. The salinity of the water is controlled by abiotic factors (rain and evaporation). However, other parameters (pH, nitrate, carbonate and bicarbonate) depend on biotic factors. Evaporation plays a crucial role in the seasonal variation of the water chemical composition. During wet seasons, the mineralization of water decreases due to dilution by rainwater and the water level of the lake rises (high water period). During dry seasons, lake water evaporates and consequently the mineralization of the water increases, which explains the increase in salinity during the low water period.
Źródło:
Journal of Water and Land Development; 2021, 49; 179-187
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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