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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 41, Number 6
JKCSEZ 41(6)
December 20, 1997 

Development of an Axially Viewed Inductively Coupled Plasma for Atomic Emission Spectrometry and Comparison between the Detection Limits of Lead

원자방출 분광분석을 위한 수평형 유도결합 플라스마의 개발과 납 검출 한계 비교
Sung-Il Cho, Myung-Sub Han, Sang-Hwa Lee, Joung Hae Lee, Jin-Chun Woo

유도코일을 5회 감고, 외측 석영관 길이를 일반적인 ICP(Inductively Coupled Plasma) 토오치에서 보다 50 mm 더 길게 제작한 수평형 ICP 방출원을 제작한 후, ICP 방출분광분석기를 구성하였다. 신호대 잡음비 및 바탕선의 세기를 고주파 출력, 시료 유량, 알곤가스 유량 그리고 차단가스 유량변화에 대하여 측정하고 최적조건을 구했다. 이들 조건에서, 수직형 플라스마와 비교하여 분광분석학적으로 비슷한 정도의 특징을 가진 바탕선 스펙트럼을 파장범위 200∼500 nm 에서 얻었다. 납(Ⅱ), 220.35 nm 의 방출선에서 검출한계가 11 ppb로 산출되었으며, 수직형과 비교하여 약 5배 낮은 값을 보였다.

An ICP(Inductively Coupled Plasma) emission spectrometer was developed with an axially viewed ICP source incorporated by a 5-turned induction coil and a torch, outer quartz tube of which was 50 mm longer than that used in conventional ICP/AES(Inductively Coupled Plasma Atomic Emission Spectrometry). The Optimization of the system has been performed in terms of the determination of signal-to-noise ratio and background intensity at various rf powers, sample flow rates, argon gas flow rates and cut-off gas flow rates. The spectro-analytical characteristics of the spectrum obtained between 200 and 500 nm was revealed to be similar compared with a vertically viewed ICP source. The detection limit of Pb(Ⅱ) at 220.35 nm was 11 ppb which was 5 times lower than that obtained with a vertically viewed ICP source.

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