ACOMS+ 및 학술지 리포지터리 설명회

  • 한국과학기술정보연구원(KISTI) 서울분원 대회의실(별관 3층)
  • 2024년 07월 03일(수) 13:30
 

  • P-ISSN1225-0163
  • E-ISSN2288-8985
  • SCOPUS, ESCI, KCI

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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

대기오염의 확산 연구를 위한 산성 오염물질의 연속 측정법의 개발

Development of Continuous Monitoring System of Acidic Pollutants for The Studies of Their Diffusion in The Atmosphere

분석과학 / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1992, v.5 no.3, pp.269-276
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피.케이. 다스쿱타
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Abstract

An ion-exchange/conductometric method is applied for the determination of total acidity in simulated atmospheric samples. Non-<TEX>$H^+$</TEX> cations and strong acid anions are enriched by the preconcentrator columns in series and eluted through the corresponding parallel suppressor units. The conductivities from each channel correspond to the concentrations of the resulting ionized species in equivalents per unit volume. The difference is the measure of acidity due to strong acids. With 5-min sampling at a flow rate of 0.3 mL/min, the detection limits for <TEX>${NH_4}^+$</TEX> and <TEX>${SO_4}^{2-}$</TEX> are 0.3 and <TEX>$0.1{\mu}equiv/L$</TEX>, respectively. The acidity for samples composed of various ions can be determined without significant error, usually less than 5%. The proposed method discriminates against the artifact from the <TEX>$CO_2$</TEX> dissolution. Principles of acidity measurements are also presented.

keywords
Ion-exchange/conductometric method, atmospheric samples


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