New Amino Acid Reference Materials for Stable Nitrogen Isotope Analysis

作者：Sato Rie^*; Kawanishi Hidehiko; Schimmelmann Arnd; Suzuki Yaeko; Chikaraishi Yoshito

来源：Bunseki Kagaku, 2014, 63(5): 399-403.

DOI：10.2116/bunsekikagaku.63.399

• amino acids
• nitrogen
• stable isotope
• standards
• reference materials

The availability of suitable standards (i.e., internationally calibrated reference materials) is a common issue as an analytical chemical precondition accurately measuring stable isotope ratios in many scientific disciplines. However, the traditional IAEA and NIST standards are in limited supply, particularly for the isotope analysis of organic hydrogen (D/H), carbon ((13)c/(12)c,) nitrogen (N-15/N-14), oxygen (O-18/O-16), and sulfur (S-34/S-32). In a subproject coupled with the international project %26quot;Development of Organic H, C, and N Stable Isotope International Standards for NIST and IAEA%26quot;, we recently produced new reference materials of nine amino acids. These reference martials were designed as a working standard set to cover the naturally occurring nitrogen isotopic heterogeneity, ranging from -25 to +45 %o (delta N-15 value, vs. Air), which would be useful as the first internationally suitable reference materials for modern applications of the nitrogen isotope analysis of amino acids and other nitrogenous organic compounds.

• 出版日期2014-5