Analysis of Heavy Metals Present on Air Through the Toxicity Analysis in Water by the Gas Washer Method, Using the Organism Daphnia magna

2019 ◽  
pp. 113-127
Author(s):  
Tamila Kleine ◽  
Therezinha Maria Novais de Oliveira ◽  
Sandra Helena Westrupp Medeiros
Keyword(s):  
Heavy Metals ◽  
Daphnia Magna ◽  
Toxicity Analysis

Comparative Evaluation of Effects of .GAMMA.-Rays and Heavy Metals on Mobility of the Water Flea Daphnia magna

RADIOISOTOPES ◽  
2003 ◽  
Vol 52 (7) ◽  
pp. 319-326 ◽  
Author(s):  
Shoichi FUMA ◽  
Nobuyoshi ISHII ◽  
Nobuyuki TANAKA ◽  
Hiroshi TAKEDA ◽  
Kiriko MIYAMOTO ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Daphnia Magna ◽  
Gamma Rays ◽  
Comparative Evaluation ◽  
Water Flea

Trophic transfer of heavy metals from freshwater zooplankton Daphnia magna to zebrafish Danio reiro

2002 ◽  
Vol 36 (18) ◽  
pp. 4563-4569 ◽  
Author(s):  
Xue-Jun Liu ◽  
I-Hsun Ni ◽  
Wen-Xiong Wang
Keyword(s):  
Heavy Metals ◽  
Daphnia Magna ◽  
Trophic Transfer ◽  
Freshwater Zooplankton

scholarly journals Toxicity of Some Pesticides, Heavy Metals and Their Mixtures to Vibrio fischeri Bacteria and Daphnia magna: Comparative Study

2015 ◽  
Vol 6 (2) ◽  
pp. 221 ◽  
Author(s):  
Sameeh A. Mansour ◽  
Alia A. Abdel-Hamid ◽  
Azza W. Ibrahim ◽  
Neveen H. Mahmoud ◽  
Walaa A. Moselhy
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Daphnia Magna ◽  
Exposure Time ◽  
Vibrio Fischeri ◽  
The Other ◽  
Metal Mixtures ◽  
Pesticide Mixtures ◽  
Bioluminescence Inhibition ◽  
Organic Pesticides

The present study was conducted to evaluate the sensitivity of the Vibrio fischeri bioluminescence inhibition test (Microtox® assay), and the standard acute Daphnia magna test; using 3 heavy metals, 3 organic pesticides, and their mixtures. In Daphnia tests, either at 24h or 30 min exposure times, the pattern of toxicity order for heavy metals was Cu ˃ Cd ˃ Pb. Chlorpyrifos-methyl was the highest toxic at 24h, while Triazophos was the highest toxic at 30 min exposure times. In the Microtox® test at 5 min exposure time, the estimated EC50 values were 4.20, 4.53 and 6.60 mg/L for Cu, Cd and Pb, respectively. At the same exposure time, the EC50 values of Triazophos, Chlorpyrifos-Me and Profenofos accounted to 1.76, 3.36 and 4.12 mg/L, respectively. Similar order of toxicity was obtained when tests were conducted at 15 min exposure time. The paired mixtures of pesticides, as well as the mixtures of Cu + Cd and Pb + Cd, showed potentiation effects, while the mixture of Cu + Pb showed additive effect against D. magna. The tertiary mixtures of the pesticides or the heavy metals reacted antagonistically. In the Microtox® assay, the heavy metal mixtures reacted antagonistically, while pesticide mixtures showed synergism. It was concluded that both Daphnia and Microtox® tests showed similar pattern of sensitivity to the single toxicants, but dissimilar pattern to the heavy metal mixtures. On the other side, using shorter exposure time (ca. 30 min) with Daphnia bioassay may enable us to held reliable comparisons with Microtox® results.

Toxicity of coal fly ash and coal gangue leachate to Daphnia magna: Focusing on typical heavy metals

2021 ◽  
pp. 129946
Author(s):  
Weihua Peng ◽  
Yingying Liu ◽  
Manli Lin ◽  
Yan Liu ◽  
Cheng Zhu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Fly Ash ◽  
Daphnia Magna ◽  
Coal Fly Ash ◽  
Coal Gangue

Toxicity identification evaluation of ammonia, nitrite and heavy metals at the stensund wastewater aquaculture plant, Sweden

1998 ◽  
Vol 38 (3) ◽  
pp. 151-157 ◽  
Author(s):  
M. Adamsson ◽  
G. Dave ◽  
L. Forsberg ◽  
B. Guterstam
Keyword(s):  
Heavy Metals ◽  
Daphnia Magna ◽  
Higher Plants ◽  
Temperate Climate ◽  
Pilot Studies ◽  
Aquatic Food Chain ◽  
Identification Evaluation ◽  
Aquatic Food ◽  
Nitrite Nitrate ◽  
Subsequent Improvement

The Stensund Wastewater Aquaculture plant was built in 1989. The plant is contained in a greenhouse because of its northern location with a temperate climate. The plant receives wastewater from 40 persons and has a residence time of 30 days. The purification concept is to use a constructed aquatic food chain (algae, zooplankton and fish) combined with hydroponic culture of higher plants to further deplete the nutrients in the wastewater. However, the production of algae and zooplankton has not been working as expected from pilot studies. The purpose of this investigation was to study if toxic chemicals were limiting the production of zooplankton (Daphnia magna) in the aquaculture treatment system. Grab samples were taken at six sites and tested for acute toxicity to Daphnia magna and analyzed for BOD, COD, ammonium-, nitrite-, nitrate- and total nitrogen, total phosphorus and heavy metals (Cd, Cr, Cu, Ni, Pb, Zn). Toxicity to D. magna was also determined after addition of EDTA, sodium thiosulphate and pH adjustment of the water to 6, 7 and 8, in order to assess if heavy metals and/or pH-dependent toxicants were present. Potential toxicants, with concentrations high enough to intoxicate Daphnia magna, were Cu, ammonia and nitrite. Subsequent improvement of nitrification reduced the ammonia and nitrite concentrations as well as the toxicity. Furthermore, the improved production of algae and Daphnia at the Stensund Wastewater Aquaculture plant verified that the primary cause of toxicity was ammonia.

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