Abstract
In this study, the first phase of Toxicity Identification Evaluation (TIE) was used to characterise the major toxicants present in a Malaysian landfill leachate, using multispecies bioassay. Freshwater fish (Rasbora sumatrana), freshwater prawn (Macrobrachium lanchesteri) and tomato seeds (Lycopersicon esculentum) were chosen as test species based on local availability, as well as their broad sensitivity for environmental toxicants. Physico-chemical fractionation steps (oxidant reduction with sodium thiosulphate, EDTA chelation, pH adjustment, pH adjustment followed by filtration, aeration, extraction with solid phase C18 column (SPE), and graduated pH analyses) were carried out. The results show that the major toxicants were mostly basic in nature, precipitable under acidic conditions and contained non-polar organic compounds. The small reductions in toxicity observed when treated with sodium thiosulphate indicate the presence of oxidizers. The EDTA chelating step did not significantly reduce toxicity in the test organisms, suggesting insignificant levels of (toxic) metals. The formation of emulsion when mixed with crude oil indicates the presence of surfactant.
| Original language | English |
|---|---|
| Title of host publication | WIT Transactions on Ecology and the Environment |
| Pages | 311-322 |
| Number of pages | 12 |
| Volume | 140 |
| DOIs | |
| Publication status | Published - 2010 |
| Event | 5th International Conference on Waste Management and the Environment, Waste Management 2010 - Tallinn Duration: 12 Jul 2010 → 14 Jul 2010 |
Other
| Other | 5th International Conference on Waste Management and the Environment, Waste Management 2010 |
|---|---|
| City | Tallinn |
| Period | 12/7/10 → 14/7/10 |
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Keywords
- bioassay
- landfill leachate
- surfactant
- toxicity identification evaluation
ASJC Scopus subject areas
- Environmental Science(all)
Cite this
Toxicity identification evaluation of landfill leachate taking a multispecies approach. / Suliasih, B. A.; Othman, M. S.; Lee, Yook Heng; Salmijah, S.
WIT Transactions on Ecology and the Environment. Vol. 140 2010. p. 311-322.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Toxicity identification evaluation of landfill leachate taking a multispecies approach
AU - Suliasih, B. A.
AU - Othman, M. S.
AU - Lee, Yook Heng
AU - Salmijah, S.
PY - 2010
Y1 - 2010
N2 - In this study, the first phase of Toxicity Identification Evaluation (TIE) was used to characterise the major toxicants present in a Malaysian landfill leachate, using multispecies bioassay. Freshwater fish (Rasbora sumatrana), freshwater prawn (Macrobrachium lanchesteri) and tomato seeds (Lycopersicon esculentum) were chosen as test species based on local availability, as well as their broad sensitivity for environmental toxicants. Physico-chemical fractionation steps (oxidant reduction with sodium thiosulphate, EDTA chelation, pH adjustment, pH adjustment followed by filtration, aeration, extraction with solid phase C18 column (SPE), and graduated pH analyses) were carried out. The results show that the major toxicants were mostly basic in nature, precipitable under acidic conditions and contained non-polar organic compounds. The small reductions in toxicity observed when treated with sodium thiosulphate indicate the presence of oxidizers. The EDTA chelating step did not significantly reduce toxicity in the test organisms, suggesting insignificant levels of (toxic) metals. The formation of emulsion when mixed with crude oil indicates the presence of surfactant.
AB - In this study, the first phase of Toxicity Identification Evaluation (TIE) was used to characterise the major toxicants present in a Malaysian landfill leachate, using multispecies bioassay. Freshwater fish (Rasbora sumatrana), freshwater prawn (Macrobrachium lanchesteri) and tomato seeds (Lycopersicon esculentum) were chosen as test species based on local availability, as well as their broad sensitivity for environmental toxicants. Physico-chemical fractionation steps (oxidant reduction with sodium thiosulphate, EDTA chelation, pH adjustment, pH adjustment followed by filtration, aeration, extraction with solid phase C18 column (SPE), and graduated pH analyses) were carried out. The results show that the major toxicants were mostly basic in nature, precipitable under acidic conditions and contained non-polar organic compounds. The small reductions in toxicity observed when treated with sodium thiosulphate indicate the presence of oxidizers. The EDTA chelating step did not significantly reduce toxicity in the test organisms, suggesting insignificant levels of (toxic) metals. The formation of emulsion when mixed with crude oil indicates the presence of surfactant.
KW - bioassay
KW - landfill leachate
KW - surfactant
KW - toxicity identification evaluation
UR - http://www.scopus.com/inward/record.url?scp=78449276349&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78449276349&partnerID=8YFLogxK
U2 - 10.2495/WM100281
DO - 10.2495/WM100281
M3 - Conference contribution
AN - SCOPUS:78449276349
SN - 9781845644604
VL - 140
SP - 311
EP - 322
BT - WIT Transactions on Ecology and the Environment
ER -