纤维素中稳定碳、氧和氢同位素的同时测定

Simultaneous determination of stable carbon, oxygen, and hydrogen isotopes in cellulose.

作者信息

Loader N J, Street-Perrott F A, Daley T J, Hughes P D M, Kimak A, Levanič T, Mallon G, Mauquoy D, Robertson I, Roland T P, van Bellen S, Ziehmer M M, Leuenberger M

机构信息

Department of Geography, College of Science, Swansea University , Swansea, SA2 8PP, United Kingdom.

出版信息

Anal Chem. 2015 Jan 6;87(1):376-80. doi: 10.1021/ac502557x. Epub 2014 Dec 11.

DOI:10.1021/ac502557x

PMID:25495958

Abstract

A technological development is described through which the stable carbon-, oxygen-, and nonexchangeable hydrogen-isotopic ratios (δ(13)C, δ(18)O, δ(2)H) are determined on a single carbohydrate (cellulose) sample with precision equivalent to conventional techniques (δ(13)C 0.15‰, δ(18)O 0.30‰, δ(2)H 3.0‰). This triple-isotope approach offers significant new research opportunities, most notably in physiology and medicine, isotope biogeochemistry, forensic science, and palaeoclimatology, when isotopic analysis of a common sample is desirable or when sample material is limited.

摘要

本文描述了一项技术发展，通过该技术可在单个碳水化合物（纤维素）样品上测定稳定的碳、氧和不可交换氢同位素比值（δ(13)C、δ(18)O、δ(2)H），其精度与传统技术相当（δ(13)C为0.15‰，δ(18)O为0.30‰，δ(2)H为3.0‰）。当需要对常见样品进行同位素分析或样品材料有限时，这种三重同位素方法提供了重要的新研究机会，尤其是在生理学和医学、同位素生物地球化学、法医学和古气候学领域。