New chloromethane preparation line for the stable chlorine isotope composition analysis.

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-07-24 DOI:10.1080/10256016.2024.2379414

Andrzej Pelc

引用次数: 0

Abstract

Stable isotopes of chlorine have great application potential due to the widespread occurrence of the chlorine anion in water, minerals, living organisms and the environment. In most studies, the chloride ion from the samples is converted to chloromethane, which is then analysed isotopically using a mass spectrometer. In the present study, a new design for a chloromethane preparation line is proposed. In particular, the new chloromethane preparation line uses a new system for injecting iodomethane into the preparation system, as well as ampoules with Teflon valves and the u-shaped freezers. These improvements reduced the preparation time to about 1 h, and also achieved a decent measurement uncertainty of 0.05 permil.

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用于稳定氯同位素成分分析的新型氯甲烷制备生产线。

由于氯阴离子广泛存在于水、矿物、生物体和环境中，因此氯的稳定同位素具有巨大的应用潜力。在大多数研究中，样品中的氯离子会转化为氯甲烷，然后使用质谱仪对其进行同位素分析。本研究提出了氯代甲烷制备生产线的新设计。特别是，新的氯代甲烷制备生产线使用了一种新的系统将碘甲烷注入制备系统，还使用了带特氟龙阀门的安瓿瓶和 U 型冷冻机。这些改进将制备时间缩短到约 1 小时，并将测量不确定度控制在 0.05 permil。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.