Jinsung An, Ki‐Hyun Kim, M. Kong
Feb 1, 2016
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0
Influential Citations
3
Citations
Journal
Environmental Geochemistry and Health
Abstract
Abstract Dimethyldithioarsinic acid (DMDTAV), present in such intense sources as municipal landfill leachate, has drawn a great deal of attention due to its abundant occurrence and different aspect of toxicity. The hydrosulfide (HS−) concentration in leachate was studied as a major variable affecting the formation of DMDTAV. To this end, the HPLC–ICPMS system equipped with the reversed-phase C18 column was used to determine DMDTAV. Simulated landfill leachates (SLLs) were prepared to cover a mature landfill condition with the addition of sodium sulfate and sulfide at varying concentrations in the presence of dimethylarsinic acid (DMAV). The concentration of sodium sulfide added in the SLLs generally exhibited a strong positive correlation with the concentration of DMDTAV. As such, the formation of DMDTAV in the SLLs is demonstrated to be controlled by the interactive relationship between DMAV and the HS−.