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| Type |
Oral Presentation |
| Area |
Oral Presentation of Young Analytical Chemists I |
| Room No. |
Room C311+C312 |
| Time |
THU 09:54-: |
| Code |
ANAL1.O-20 |
| Subject |
Quantification of Inorganic Arsenic using Ion Exchange Membrane by Laser Induced Breakdown Spectroscopy |
| Authors |
Kwon seul woo, Sang-Ho Nam*, Yonghoon Lee
Department of Chemistry, Mokpo National University, Korea
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| 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. Inductively Coupled Plasma-Mass Spectrometry(ICP-MS) coupled with chromatographic technique 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 96.9 %. NIST water CRM 1643f was used to validate the method for the determination of inorganic arsenics in a sample. The recoveries of As(Ⅴ) and As(Ⅲ) by LIBS were 98.9 % and 102.0 % respectively. The new speciation method by LIBS has labor and cost advantages for the quantitation of inorganic arsenic. |
| E-mail |
hansor9773@naver.com |
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120th General Meeting of the KCS