title: Formation of dimethyldithioarsinic acid in a simulated landfill leachate in relation to hydrosulfide concentration.
abstract: Dimethyldithioarsinic acid (DMDTA(V)), 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 DMDTA(V). To this end, the HPLC-ICPMS system equipped with the reversed-phase C18 column was used to determine DMDTA(V). 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 (DMA(V)). The concentration of sodium sulfide added in the SLLs generally exhibited a strong positive correlation with the concentration of DMDTA(V). As such, the formation of DMDTA(V) in the SLLs is demonstrated to be controlled by the interactive relationship between DMA(V) and the HS(-).
authors.affiliation: Department of Civil and Environmental Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-742, Republic of Korea.
authors.forename: Jinsung
authors.initials: J
authors.lastname: An
authors.affiliation: Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 133-791, Republic of Korea.
authors.forename: Ki-Hyun
authors.initials: KH
authors.lastname: Kim
authors.affiliation: Department of Earth System Sciences, Yonsei University, 50 Yeonse-ro, Seodaemun-gu, Seoul, 120-749, Republic of Korea.
authors.forename: Mihye
authors.initials: M
authors.lastname: Kong
authors.affiliation: Seoul Center, Korea Basic Science Institute, 6-7, Inchon-ro 22-gil, Seongbuk-gu, Seoul, 136-075, Republic of Korea.
authors.forename: Joo-Ae
authors.initials: JA
authors.lastname: Kim
authors.affiliation: Seoul Center, Korea Basic Science Institute, 6-7, Inchon-ro 22-gil, Seongbuk-gu, Seoul, 136-075, Republic of Korea.
authors.forename: Jeoung Hwa
authors.initials: JH
authors.lastname: Shin
authors.affiliation: Western Seoul Center, Korea Basic Science Institute, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, 120-140, Republic of Korea.
authors.forename: Yun Gyong
authors.initials: YG
authors.lastname: Ahn
authors.affiliation: Seoul Center, Korea Basic Science Institute, 6-7, Inchon-ro 22-gil, Seongbuk-gu, Seoul, 136-075, Republic of Korea. dunee@kbsi.re.kr.
authors.forename: Hye-On
authors.initials: HO
authors.lastname: Yoon
mesh_terms: D001152:Arsenicals / Q000737:chemistry*; D002101:Cacodylic Acid / Q000031:analogs & derivatives* / Q000737:chemistry; D004784:Environmental Monitoring; D006862:Hydrogen Sulfide / Q000737:chemistry*; D064091:Waste Disposal Facilities; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D001152:Arsenicals; D014874:Water Pollutants, Chemical; C518668:dimethyldithioarsinic acid; D002101:Cacodylic Acid; D006862:Hydrogen Sulfide
keywords: Dimethyldithioarsinic acid; HPLC–ICPMS; Hydrosulfide; Landfill leachate