FI-HG-AAS를 이용한 전처리 과정에서 사용되는 예비환원제의 종류에 따른 요중 비소 분석결과 비교

• 영문명: Comparisons of Urinary Arsenic Analysis by Pre-reductant for Preconditioning via the FI-HG-AAS Method
• 발행기관: 한국환경보건학회
• 저자명: 최승현(Seung-Hyun Choi) 최재욱(Jae Wook Choi) 조용민(YongMin Cho) 배문주(Munjoo Bae)
• 간행물 정보: 『1. 한국환경보건학회지』제41권 제5호, 289~298쪽, 전체 10쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2015.10.30

영문 초록

Objectives: The method of analyzing urinary arsenic by flow injection hydride generation atomic absorption spectrometry (FI-HG-AAS) is generally used because it shows relatively greater sensitivity, low detection limits, low blocking action, and is simple to operate. In this study, the results of analysis according to three pre-reductants commonly used in the FI-HG-AAS method were compared with each other. Methods: To analyze urinary arsenic, nineteen urine samples were collected from adults aged 43-79 years old without occupational arsenic exposure. Analysis equipment was FI-HG-AAS (AAnalyst 800/FIAS 400, PerkinElmer Inc., USA). The three pre-reductants were potassium iodide (KI/AA), C3H7NO2S (L-cysteine), and a mixture of KI/AA and L-cysteine (KI/AA&L-cysteine). Results: In the results of the analysis, the recovery rate of the method using KI/AA was 82.3%, 95.7% for Lcysteine, and 123.5% for KI/AA and L-cysteine combined. When compared with the results by use of high performance liquid chromatography inductively-coupled plasma mass spectrometry (HPLC-ICP-MS), the method using L-cysteine was the closest to those using HPLC-ICP-MS (98.57 µg/L for HPLC-ICP-MS; 74.96 µg/L for L-cysteine; 69.23 µg/L for KI/AA and L-cysteine; 13.06 µg/L for KI/AA) and were significantly correlated (R2=0.882). In addition, they showed the lowest coefficient of variation in the results between two laboratories that applied the same method. Conclusion: The efficiency of hydride generation is considered highly important to the analysis of urinary arsenic via FI-HG-AAS. This study suggests that using L-cysteine as a pre-reductant may be suitable and the most rational among the FI-Hg-AAS methods using pre-reductants.

목차

I. 서 론

II. 연구방법

III. 결 과

IV. 고 찰

V. 결 론

키워드

Hydride Generation atomic absorption spectrometry KI/ascorbic acid L-cysteine Pre-reductant Urinary arsenic