Study on the Analysis of Carbon Isotopes for HCB and PeCB Standards using EA-IRMS

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Research article

Journal of the Korean Society for Environmental Analysis 2013;16(3):181-185.

EA-IRMS를 이용한 HCB와 PeCB 표준물질 탄소동위원소 분석 연구

김기준¹, 최경희², 김보경³, 박진주⁴, 박광수⁵, 김영희⁴, 이진선⁵, 석광설⁵

¹NIER
²국립환경연구원
³국립환경과학원 환경측정분석센터
⁴국립환경과학원
⁵국립환경과학원 화학물질연구과

Abstract

Hexachlorobenzene (HCB) and pentachloorbenzene (PeCB) are banned globally as POPs under the Stockholm Convention. Those are still emitted as a by-product from certain industrial activities such as waste incinerations,metal production etc and are undergone long-range atmospheric transport. It is difficult to identify the sources of those compounds due to the varieties of point sources. Recently, studies on stable isotopes of POPs have been carried out to get more information about the sources. In this study, the carbon isotopes of HCB and PeCB were analyzed using EA-IRMS (elemental analyzer - isotope ratio mass spectrometry) to examine the possibilities of application as a tracer for POPs sources. The carbon isotopic ratios of both HCB and PeCB were obtained through the EA-IRMS. The isotopic ratios of the standards produced from two different manufactures were compared. The δ13C values of HCB ranged from -26.05‰ to -25.28‰, and those of PeCB ranged from -29.20‰ to -29.19‰. The relative standard deviations were less than 0.24% for EA-IRMS analysis of carbon isotopes and the difference between the value of cross-product manufacturing company appeared.

Key Words: Stable isotope, IRMS, HCB, PeCB, POPs