- 대기 중 이산화질소의 단기 측정을 위한 뱃지형 passive sampler의 개발 및 평가
- ㆍ 저자명
- 김선규,임봉빈,정의석,김선태,Kim. Sun Kyu,Yim. Bong Been,Jung. Eui Suk,Kim. Sun Tae
- ㆍ 간행물명
- 한국대기환경학회지
- ㆍ 권/호정보
- 2006년|22권 1호|pp.117-126 (10 pages)
- ㆍ 발행정보
- 한국대기환경학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
The purpose of this study is to develop a badge-type passive sampler for the measurement of short-term nitrogen dioxide and to evaluate its performance. The principle of the method is a colorimetric reaction of nitrogen dioxide with sulfanilic acid, N-1-naphthylethylendiamine, and phosphoric acid. First, it has been shown that the filter paper should be rinsed with ultrapure water and ultrasound, and then dried in a vacuumed desiccator. The concentration and volume of absorption reagent (triethanolamine) were $20\%$ and 100 ${mu}L$, respectively. The extraction time was determined as 60 min. Second, duplicate measurements (n= 116) were carried out for evaluating the precision of the passive sampler. The relative error and the correlation coefficient between duplicates are $3.4pm 3.0\%$ and 0.994, respectively. In addition, the $95\%$ confidence interval of intraclass correlation coefficient and the estimated value are 0.992$sim$0.996 and 0.994, respectively. Third, a paired t-test was carried out for evaluating the accuracy of the passive sampler (n=40). In the result of the test, the $95\%$ confidence interval of the difference was -1.710 ppb <$gamma$< 0.788 ppb. Finally, the average concentration of blanks, measurement detection limit, limit of detection, and limit of quantification are $2.4pm 0.4$ ppb, 104 ppb, 3.8 ppb, and 7.0 ppb, respectively.