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Tytuł:
Badania nad oznaczaniem kadmu w ściekach
Issledovanija nad opredeleniem kadmija v stochnykh vodakh
Studies on colorimetric determination of cadmium in sewage
Autorzy:
Dozanska, W.
Powiązania:
https://bibliotekanauki.pl/articles/875734.pdf
Data publikacji:
1963
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
scieki
scieki przemyslowe
kadm
zawartosc kadmu
wartosci dopuszczalne
dzialanie toksyczne
oznaczanie
metoda kolorymetryczna
metoda ditizonowo-cyjankowa
sewage
industrial sewage
cadmium
cadmium content
limit value
toxic effect
determination
colorimetric method
dithizone-cyanide method
Źródło:
Roczniki Państwowego Zakładu Higieny; 1963, 14, 5
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Agrophysical factors determining nitrate and heavy metal transformations in soils
Autorzy:
Stepniewska, Z
Stepniewski, W.
Wlodarczyk, T.
Powiązania:
https://bibliotekanauki.pl/articles/805117.pdf
Data publikacji:
1993
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
agrophysical factor
mercury
iron transformation
nitrification
lead
soil aeration status
manganese transformation
nitrogen fixation
ammonification
soil
cadmium
nitrate
heavy metal
Opis:
In the reviev the effect of such factors like soil bulk density, soil moisture status, air-filled porosity and aggregation on soil aeration and redox status and thus on the transformations of nitrogen (denitrifaction, nitrification, nitrogen fixation and ammonification), manganese, and iron as well as on solubility of mercury, cadmium, and lead is discussed.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 1993, 400
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zawartosc kadmu i olowiu w warzywach,zbozach,owocach i glebie pochodzacych z terenow o zroznicowanym zanieczyszczeniu przemyslowym oraz ze szklarni
Autorzy:
Szymczak, J
Ilow, R.
Regulska-Ilow, B.
Powiązania:
https://bibliotekanauki.pl/articles/873137.pdf
Data publikacji:
1993
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
zanieczyszczenia przemyslowe
gleby
zboza
toksykologia
kadm
owoce
szklarnie
warzywa
produkty spozywcze
olow
surowce roslinne
metale ciezkie
skazenie zywnosci
industrial pollutant
soil
cereal
toxicology
cadmium
fruit
greenhouse
vegetable
food product
lead
plant raw material
heavy metal
food contamination
Opis:
Oznaczono zawartość kadmu i ołowiu w warzywach, zbożach, owocach i glebie z upraw polowych uznanych jako wolne od zanieczyszczeń przemysłowych, w warzywach z upraw narażonych na zanieczyszczenia oraz w warzywach i glebie z upraw szklarniowych.
The content of cadmium and lead was measured in vegetables, fruit, cereals and soil from areas exposed and non-exposed to industrial pollution and in vegetables and soil from greenhouses. The elements were measured after dry mineralization by atomic absorption spectrophotometry following extraction of complexes from APDS into the organic phase (MIBK). Lead and cadmium were determined in 482 samples of vegetables, 101 fruit samples, 132 cereal samples and 297 soil samples. In the vegetables from the areas not exposed to industrial pollution lead content was below the detectability range (< d.r.) to 576.1 µg/kg, and cadmium was from < d.r. to 73.5 µg/kg. In the vegetables from areas exposed to industrial pollution lead was from 9.3 to 1044.0 µg/kg and cadmium from < d.r. to 552.3 µg/kg and cadmium from 2.3 to 132.5 µg/kg. In the soil from greenhouses lead was found in amounts from 17.5 to 212.0 mg/kg of air dry mass (adm), and cadmium from 125 to 750 µg/kg of adm. In soil from vegetable gardens lead was from 3.3 to 15.3 mg/kg of adm., and cadmium from
Źródło:
Roczniki Państwowego Zakładu Higieny; 1993, 44, 4; 331-346
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zawartosc rteci we wlosach mieszkancow Warszawy narazonych i nienarazonych zawodowo
Autorzy:
Wiadrowska, B
Ludwicki, J.K.
Powiązania:
https://bibliotekanauki.pl/articles/871955.pdf
Data publikacji:
1993
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
zagrozenia zdrowia
olow
zdrowie czlowieka
rtec
skazenia srodowiska
metale ciezkie
kadm
choroby zawodowe
toksycznosc
health hazard
lead
human health
mercury
environment contamination
heavy metal
cadmium
occupational disease
toxicity
Opis:
Określono stopień narażenia na rtęć ludzi zamieszkałych na terenie Warszawy i okolic na podstawie oznaczeń tego pierwiastka we włosach osobników nienarażonych oraz narażonych zawodowo. Oznaczenia wykonywano metodą spektrofotometrii atomowo-absorpcyjnej.
The concentrations of mercury in the hair of workers employed in the fluorescent tubes plant in Warsaw were determined and compared with the results obtained in our previous studies in the years 1970/1980. Total mercury in the hair was analysed by means of flameless atomic absorption spectrometry. The average mercury concentrations in the non-exposed population was at a similar level (0.17 µg/g) as in the results obtained in 1970/80. The average concentrations of total mercury in the hair of exposed subjects were approximately 30 times lower than in the years 1970/80 and ranged from 0.38 to 1.42 µg/g. This substantial reduction in Hg concentration in the hair of exposed people was due to improvements in the technological process.
Źródło:
Roczniki Państwowego Zakładu Higieny; 1993, 44, 4; 361-365
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena pobrania kadmu i olowiu z warzywami przez konsumentow wwojewodztwie katowickim
Autorzy:
Lorek, E
Powiązania:
https://bibliotekanauki.pl/articles/875695.pdf
Data publikacji:
1994
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
olow
analiza zywnosci
zywnosc
woj.katowickie
zanieczyszczenia zywnosci
kadm
konsumenci
toksycznosc
warzywa
produkty spozywcze
lead
food analysis
food
Katowice voivodship
food contaminant
cadmium
consumer
toxicity
vegetable
food product
Opis:
W pracy dokonano oceny stopnia pobrania występujących w warzywach metali ciężkich takich jak Cd i Pb przez konsumentów z czterech grup gospodarstw domowych w województwie katowickim. Analizie poddano tę grupę warzyw, która jest w tym regionie produkowana, a także sprowadzana na rynek województwa katowickiego przez sklepy Wojewódzkiej Spółdzielni Ogrodniczej z innych rejonów kraju.
The amounts of Cd and Pb consumed with vegetables were determined in four groups of households: workmen, workmen-peasants, farmers and pensioned workers and persons receiving disability allowances. The chemical analysis was done, in the first place, of vegetables with edible roots in which Pb and Cd were determined by atomic absorption spectrophotometry. The vegetables were bought in 1986-1987 by the Province Gardeners Cooperative in the Province of Katowice (mining and industrial region) and from the Province of Katowice and Warsaw. The amount of Cd or Pb found in weight unit of a given vegetable multiplied by the amount of this vegetable consumed in a week served as a measure of the amount of these metals taken by the consumer. After comparing of this amount with the acceptable dose the per cent of this dose obtained from vegetables was calculated. The study showed that the vegetables brought from other provinces than Katowice contained several times less Cd and Pb than those grown in the Province of Katowice. The lowest intake of Cd and Pb with vegetables was found in the households of workmen and the highest one in the households of farmers who consumed nearly exclusively vegetables grown on their farms. The vegetables from the Province of Katowice accounted in farmer families for 40% of the acceptable maximal weekly intake of cadmium, and the intake of lead was even above this maximal level. The differences in the weekly intake of these metals between the studied groups of households were due to differences in the amounts of consumed vegetables. Improvement is postulated of the control of the quality of vegetables in the Silesian market, and vegetables should be brought preferably from these regions where Cd and Pb content in vegetables is safe.
Źródło:
Roczniki Państwowego Zakładu Higieny; 1994, 45, 1-2; 37-43
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Poziom zanieczyszczenia metalami niektorych grzybow jadalnych dziko rosnacych
Autorzy:
Statkiewicz, U
Gayny, B.
Powiązania:
https://bibliotekanauki.pl/articles/871316.pdf
Data publikacji:
1994
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
zagrozenia zdrowia
skazenia srodowiska
zywnosc
kadm
grzyby jadalne
olow
rtec
runo lesne
metale ciezkie
arsen
cynk
toksykologia zywnosci
miedz
toksycznosc
health hazard
environment contaminant
food
cadmium
edible mushroom
lead
mercury
forest cover
heavy metal
arsenic
zinc
food toxicology
copper
toxicity
Opis:
Oznaczono Cd, Hg, Pb, Cu i Zn w próbkach grzybów jadalnych dziko rosnących pozyskanych w latach 1990-91 z sześciu rejonów Polski.
The amount of lead, cadmium, copper, zinc and mercury has been determined by atomic absorption spectroscopy in 96 samples of edible mushrooms, growing wild fresh edible fungus and dried (Boletus scaber, ceps) mushrooms, acquired from 6 regions in Poland: zielonogórskie, toruńskie, ostrołęckie, radomskie, warszawskie and lubelskie in 1990 and 1991. The level was found to be higher than that allowed by the polish standard PN-89/A-78510 Mushroom Processed Foods. Dried mushrooms and other legal acts eg. Instruction of the Ministry of Health § Social Welfare of 12th November 1990, the content of zinc in dried mushrooms (all samples) and in fresh edible fungus from the zielonogórski and toruński region. The content of copper in fresh edible fungus did not usually correspond with the requirements, whereas in the dried mushrooms (Boletus scaber, ceps) it exceeded the level only insignificantly in individual samples (average from studied regions was found to be within limits). The content of lead in dried mushrooms complied with the requirements of the standard, except for samples of ceps from zielonogórski region, where it insignificantly exceeded the allowed level of 2.0 mg/kg. The average content of zinc and copper in dried mushrooms did not exceed the allowed levels. The levels of mercury determined in the studied samples do not cause any excitement in light of the FAO/WHO agreements. A high level of contamination with cadmium was noted in all studied samples, being 2.5 times higher in edible fungus, 6-8 times higher in Boletus scaber and 19-23 times higher in dried ceps. This fact requires attention of sanitary services, although it should be stated that mushrooms are not the basic nutritional group, and thus their participation in the overall intake of metals in consummated foods is insignificant.
Źródło:
Roczniki Państwowego Zakładu Higieny; 1994, 45, 1-2; 27-35
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zawartosc pierwiastkow szkodliwych dla zdrowia w owocach i warzywach uprawianych w wojewodztwie siedleckim
Autorzy:
Zalewski, W
Oprzadek, K.
Syrocka, K.
Lipinska, J.
Jaroszynska, J.
Powiązania:
https://bibliotekanauki.pl/articles/872496.pdf
Data publikacji:
1994
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
mangan
zelazo
zywnosc
nikiel
kadm
zanieczyszczenia srodowiska
owoce
warzywa
olow
analiza zywnosci
uprawa roslin
metale ciezkie
woj.siedleckie
cynk
toksykologia zywnosci
miedz
manganese
iron
food
nickel
cadmium
environment contaminant
fruit
vegetable
lead
food analysis
plant cultivation
heavy metal
Siedlce voivodship
zinc
food toxicology
copper
Opis:
W latach 1988-1990 kontynuowano oznaczenia metodą ASA zawartości Fe, Mn, Zn, Cu, Ni, Cd i Pb w warzywach gruntowych i owocach pochodzących ze zbiorów indywidualnych producentów z okolic Siedlec, Węgrowa i Sokołowa Podlaskiego. Najwyższe zawartości kadmu stwierdzono w próbkach marchwi, buraka ćwikłowego, pietruszki, selera i truskawek. Nadmierne zawartości ołowiu stwierdzono w pojedynczych próbkach truskawek, czerwonej porzeczki oraz naci pietruszki i selera.
The content of iron, manganese, nickel, lead, copper, zinc and cadmium was determined by means of atomic absorption spectrometry (ASA) in vegetables and fruit grown in the Province of Siedlce. The studied fruits included tomatoes, cucumbers, cabbages, carrots, parsley, celery, red beets, potatoes garden strawberries, black and red currants, raspberries, apples, plums and cherries. The total number of studied samples of fruits and vegetables was 229. In 49 studied samples cadmium exceeded 0.03 mg/kg and in 4 samples lead was above 0.3 mg/kg. In most studied samples of green parts of parsley and celery (80%) zinc was above 10 mg/kg of fresh mass, that is the level permitted in our country for products containing below 20% of dry mass.
Źródło:
Roczniki Państwowego Zakładu Higieny; 1994, 45, 1-2; 19-26
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Survival of larvae of Nippostrongylus brasiliensis [Nematoda] in solutions of toxic substances
Autorzy:
Gadomska, K
Zakrzewska, K.
Powiązania:
https://bibliotekanauki.pl/articles/839605.pdf
Data publikacji:
1997
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
toxic substance
Nematoda
lead
cadmium solution
copper solution
Nippostrongylus brasiliensis
environment pollution
cadmium
zinc
copper
larva
zinc solution
lead solution
survival
Opis:
The aim of this study was to determine the action of zinc, cooper, lead and cadmium compounds upon N. brasiliensis invasive nematode larvae. The tested larvae were kept in ZnCl2, CuCl2 , Pb(NO3)2 and CdCl2 solutions. The concentrations of toxic substances applied for the study corresponded with level of environmental pollulion. All toxins reduced live - space of larvae. In control group they survived about 69 days. In solutions of the Zn, contaminated with 10, 50, 100 and 200 ppm of toxic substance, they survived 42, 16, 14 days and 72 hours. In solution of Cu, contaminated with 5, 10, 50 and 200 ppm of toxin, live - space was reduced to 51, 21, 7 days and 54 hours, respectively. Lead reduced live - space of larvae to 26 days already at the low concentration of 10 ppm and in all higher concentrations (20, 50 and 200 ppm) their survival changed unsignificantly (to 22 days). In solution of Cd, contaminated with 0.1 and 0.3 ppm larvae died after 39 and 17 days, respectively, white at higher concentrations of this toxin (3 and 10 ppm) larvae survived only 54 and 30 hours, respectively.
Źródło:
Annals of Parasitology; 1997, 43, 1
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Survival of larvae of Nippostrongylus brasiliensis [Nematoda] in solutions of toxic substances
PRZEŻYWALNOŚĆ LARW NIPPOSTRONGYLUS BRASILIENSIS (NEMATODA) W ROZTWORACH SUBSTANCJI TOKSYCZNYCH
Autorzy:
Gadomska, K.
Zakrzewska, K.
Powiązania:
https://bibliotekanauki.pl/articles/2148897.pdf
Data publikacji:
1997
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
toxic substance
Nematoda
lead
cadmium solution
copper solution
Nippostrongylus brasiliensis
environment pollution
cadmium
zinc
copper
larva
zinc solution
lead solution
survival
Opis:
The aim of this study was to determine the action of zinc, cooper, lead and cadmium compounds upon N. brasiliensis invasive nematode larvae. The tested larvae were kept in ZnCl2, CuCl2 , Pb(NO3)2 and CdCl2 solutions. The concentrations of toxic substances applied for the study corresponded with level of environmental pollulion. All toxins reduced live - space of larvae. In control group they survived about 69 days. In solutions of the Zn, contaminated with 10, 50, 100 and 200 ppm of toxic substance, they survived 42, 16, 14 days and 72 hours. In solution of Cu, contaminated with 5, 10, 50 and 200 ppm of toxin, live - space was reduced to 51, 21, 7 days and 54 hours, respectively. Lead reduced live - space of larvae to 26 days already at the low concentration of 10 ppm and in all higher concentrations (20, 50 and 200 ppm) their survival changed unsignificantly (to 22 days). In solution of Cd, contaminated with 0.1 and 0.3 ppm larvae died after 39 and 17 days, respectively, white at higher concentrations of this toxin (3 and 10 ppm) larvae survived only 54 and 30 hours, respectively.
Źródło:
Wiadomości Parazytologiczne; 1997, 43, 1; 79-88
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of different soil pH on cadmium uptake by the plants
Autorzy:
Lehoczky, E.
Szabo, L.
Horvath, S.
Albrecht, G.
Marth, P.
Szabados, I.
Powiązania:
https://bibliotekanauki.pl/articles/806287.pdf
Data publikacji:
1998
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
soil pH
cadmium uptake
plant
pot experiment
soil reaction
testing
maize
lettuce
Opis:
Cadmium is one of the toxic heavy metals which, getting in the nutrition chain through the soil-plant system, is capable of causing harm to human health. The objective of the trial was to study the effect of cadmium load in the soil-plant system. In pot experiments carried out under greenhouse conditions, effect of increasing Cd load on different crop plants (lettuce, maize) was studied. Literature data inform on the decisive role of soil reaction in mobility of cadmium in the soil. The answer was looked for the question of the effect of cadmium treatments at uniform rates on Cd uptake by plants on two soils quite different from each other in pH value. It may be concluded that increasing Cd load can result in the decrease of biomass production of maize and lettuce, but significant differences were obtained only on very acid SN soil. The concentration of Cd in plants increased on both soils as a consequence of growing Cd treatment rates. In corresponding treatments the Cd levels in lettuce and maize plants grown on very acid SE soil were several times higher than in case of plants on the KE soil. Obtained results confirm that Cd mobility on acid soil may be much higher what is clearly reflected in cadmium uptake by plants. On acid soils the cadmium uptake by plants is more intensive, therefore this toxic element is more likely to get in the nutrition chain. Considerable differences in Cd uptake can be detected among the plant species. On the same soil at the same rate of cadmium treatment. Cd level in lettuce plants was by several times higher than in maize. The lettuce plants can accumulate cadmium in the leaves at high concentrations without any visible symptoms. In the experiments no toxicity was observed on test plants.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 1998, 456
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of pH and organic substances on the zinc and cadmium binding by the polynuclear Al13
Autorzy:
Badora, A.
Powiązania:
https://bibliotekanauki.pl/articles/795311.pdf
Data publikacji:
1998
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
pH
organic substance
zinc
cadmium
polynuclear aluminium complex
aluminium
heavy metal binding
Opis:
The aim of the present study was to determine the influence of the reaction and organic substance on the effectiveness of zinc and cadmium binding by Al₁₃ The presence of organic substance in the combinations with Al₁₃ and toxic elements did not block the binding Al₁₃ activity. However, its type and amount influenced the effects of cadmium and zinc immobilisation and mobilisation. Cadmium in the solution was antagonistically related to zinc and other microelements in the plant which was confirmed in the mineral composition and presentation of the studied plants.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 1998, 456
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of soil acidification on Cd and Pb precipitation
Autorzy:
Sari, D.
Morvai, B.
Powiązania:
https://bibliotekanauki.pl/articles/802266.pdf
Data publikacji:
1998
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
soil acidification
cadmium
lead
precipitation
heavy metal
sustainable environment
environment pollution
heavy metal accumulation
Opis:
A model for estimating the precipitation of Cd-, Pb- and As-sulphide in soils at various pH is presented. pH influences not only the solubility of heavy metal-sulphides but also on the distribution of the S atom among sulphide (S²⁻, SH⁻, H₂S) and sulphate (SO₄²⁻) species by the redox potential of the soil solution. The model, based on the Nerst-equation. considers the equilibrium of protolitic processes and complex ion formation. In order to test the model, a long term field experiment polluted with different levels of toxic heavy metals on Hungarian typical soils was performed. Coarse textured soils were treated with Cd. Pb and As salts at pH = 6.8 and 8 and after 6 months and 2 years the heavy metal precipitation was investigated. The Pb ion precipitated at pH = 8.0 and pH = 6.2 while Cd ion at pH = 8. The As ion did not show precipitation effect in any soil according to the majority of arsenate ions at the actual redox potential. Although the solubility of CdS (pK = 26.1) and PbS (pk = 26.6) is similar, the Cd concentration in the solution was higher than that of Pb. The difference between the two ion concentrations is interpreted by the stronger Pb ion adsorption to organic and inorganic soil constituents. It indicated that the adsorbed and complex ion should be considered for the prediction of precipitation.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 1998, 456
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enrichment fractions of trace metals in the five sludges collected from Pomerania
Wzbogacanie frakcji metali śladowych w osadach filtracyjnych Pomorza
Autorzy:
Janukowicz, H.
Wira, J.
Powiązania:
https://bibliotekanauki.pl/articles/84901.pdf
Data publikacji:
1999
Wydawca:
Akademia Pomorska w Słupsku
Tematy:
trace metal
sludge
Pomeranian region
filtration plant
determination
aluminium
silver
cadmium
manganese
zinc
lead
copper
tin
cobalt
nickel
iron
distribution
waste water sludge
leaching technique
Źródło:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 1999, 03
1643-0115
Pojawia się w:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cadmium concentrations in the Bahia Blanca Estuary (Argentina). Potential effects of dissolved cadmium on the diatom Thalassiosira curviseriata
Autorzy:
Andrade, S.J.
Pucci, A.E.
Marcovecchio, J.E.
Powiązania:
https://bibliotekanauki.pl/articles/48820.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Argentina
cadmium concentration
Bahia Blanca Estuary
potential effect
toxicity
Thalassiosira curviseriata
estuary
diatom
Opis:
Concentrations of dissolved and particulate cadmium were measured in the water of the Bah´ıa Blanca Estuary, one of the most highly industrialised regions in Argentina. Simultaneously, Cd contents were also determined in samples of phytoplankton. Thus, the estuary was characterised from the viewpoint of Cd occurrence. Additionally, a microscale environment was selected within the estuary in order to carry out an ecotoxicological study. Thus, environmental parameters (i.e. temperature, salinity, nutrients, chlorophyll a) were measured weekly at Puerto Cuatreros (in the inner estuary) during winter, when the phytoplankton bloom occurs; during the other seasons sampling was done twice a week. In addition, cells of the diatom Thalassiosira curviseriata – the dominant species in the phytoplankton bloom – were isolated and cultivated in the laboratory. The monoclonal cultures obtained were exposed to increasing concentrations of Cd under controlled environmental conditions and the growth rate inhibition was measured. As a preliminary conclusion it was found that Cd levels in the Bah´ıa Blanca Estuary are significantly lower than the EC50 value for T. curviseriata.
Źródło:
Oceanologia; 2000, 42, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison between stability constants of cadmium and lead complexes with humic substances of different molecular weight isolated from Baltic Sea water
Autorzy:
Grzybowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/47686.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
ultrafiltration
humic substance
sea water
cadmium
complexation
water
Baltic Sea
lead
heavy metal
Opis:
The complexation of cadmium and lead with humic substances was studied using differential pulse anodic stripping voltammetry and a standard addition technique. The titration was done for humic substances of different molecular weight that had been isolated from seawater and subsequently redissolved in organic-free seawater. The different molecular weight fractions were obtained by ultrafiltration using 1000 D (Dalton), 5000 D and 10 000 D pore size filters. Comparison of the calculated stability constants suggests that the strengths of lead complexes in the analysed fractions are similar and that cadmium is complexed by the fraction smaller than 1000 D.
Źródło:
Oceanologia; 2000, 42, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 307

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