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제123회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Accurate measurement of total arsenic by considering arsenic species

등록일
2019년 1월 31일 14시 54분 09초
접수번호
5103
발표코드
ANAL2.O-27 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 10시 : 44분
발표형식
구두발표
발표분야
Analytical Chemistry - Oral Presentation of Young Analytical Chemists II
저자 및
공동저자
Sang-Ho Nam*, DongChan Lee, Ngo Van Tho
Department of Chemistry, Mokpo National University, Korea
Accurate measurement of total arsenic in a sample has been important as the toxicity related to the arsenic element has been widely known. Total amount of arsenic in a sample has been critical, but the chemical species of arsenic has also been very critical because their toxicity depend on the chemical forms. However, if the total arsenic in a sample is in trace level below the allowance maximum of any arsenic species, the quantitation of total arsenic might be satisfactory. For the quantitation of total arsenic in a sample, arsenic species in a sample have been not considered as far as we know. In general, the standard solution of arsenic has been made by As(V) standard. It might be good for the sample which its major species are As(V). But, if the major species of arsenic in a sample are different from As(V), the arsenic species of the standard solution for calibration curve must be deeply considered. This study showed the amount of total arsenic in a sample could be falsely obtained by the standard solution of different arsenic species. The different arsenic species used in this study were As(V), As(III), MMA, DMA and AsB. The internal standards for the determination of total arsenic in rice and oyster were also investigated in this study. The best internal standard was Tellurium.

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