用于测定地质和宇宙化学样品中痕量卤素的活化分析的比较研究。

Comparative study of activation analyses for the determination of trace halogens in geological and cosmochemical samples.

作者信息

Nakamoto Tomoshi, Oura Yasuji, Ebihara Mitsuru

机构信息

Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Tokyo, Japan.

出版信息

Anal Sci. 2007 Sep;23(9):1113-9. doi: 10.2116/analsci.23.1113.

DOI:10.2116/analsci.23.1113

PMID:17878588

Abstract

Halogens (fluorine, chlorine, bromine and iodine) were determined by activation analyses (neutron activation analysis (NAA), photon activation analysis (PAA) and prompt gamma-ray analysis (PGA)) for geological and cosmochemical solid samples. We studied how each analytical method was for the determination of trace amounts of halogens in rock samples. Radiochemical NAA (RNAA) showed the highest analytical reliability for three halogens (chlorine, bromine and iodine), whereas a set of four halogens (fluorine, chlorine, bromine and iodine) could be determined in principle by radiochemical PAA (RPAA) from a single specimen. Although it is a non-destructive method, PGA showed an analytical sensitivity for chlorine comparable to those of RNAA and RPAA.

摘要

通过活化分析（中子活化分析（NAA）、光子活化分析（PAA）和瞬发伽马射线分析（PGA））测定地质和宇宙化学固体样品中的卤素（氟、氯、溴和碘）。我们研究了每种分析方法在测定岩石样品中痕量卤素方面的效果。放射化学中子活化分析（RNAA）对三种卤素（氯、溴和碘）显示出最高的分析可靠性，而原则上通过放射化学光子活化分析（RPAA）可以从单个样品中测定四种卤素（氟、氯、溴和碘）。尽管瞬发伽马射线分析（PGA）是一种无损方法，但其对氯的分析灵敏度与放射化学中子活化分析（RNAA）和放射化学光子活化分析（RPAA）相当。