119th General Meeting of the KCS

Type Oral Presentation
Area Oral Presentation of Young Analytical Chemists Ⅰ
Room No. 303호
Time THU 10:40-:
Code ANAL1.O-43
Subject Determination of the Inorganic Arsenic with Solid Phase Extraction and LIBS
Authors 권슬우, 이원배, 남상호*
목포대학교 화학과, Korea
Abstract The toxicity, bioactivity and mobility of arsenic are dependent on the chemical forms or species in which it exists. It is well known that the inorganic arsenic is more toxic than the organic arsenic. The ICP-MS coupled with chromatographic techniques has been used to perform the qualitative and quantitative determination of the arsenic species in various samples. However, it has been difficult to conduct a overall analysis due to matrix effects and took a long time to separate the arsenic species in various samples with the complex matrix. In this study, the solid phase extraction(SPE) membrane was used to separate inorganic arsenics, and those were detected by laser induced breakdown spectroscopy (LIBS). The samples were prepared using a buffer solution with phosphate buffer saline (pH 7.4) to separate arsenic species. The recovery efficiency of As(Ⅴ) by LIBS was 106.7 %. The separated As(Ⅲ) was identified by IC-ICP-MS. From the results, it was confirmed that inorganic arsenic species could be separated and detected using SPE membrane and LIBS.
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