Watanabe Takuro, Sasaki Tomohiro, Yoshimura Tomotaka, Narukami Shoji, Shimosaka Takuya
National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST).
Research & Development Division, HORIBA STEC, Co., Ltd.
Anal Sci. 2018;34(7):853-857. doi: 10.2116/analsci.17P560.
In this work, we applied post-column reaction gas chromatography (GC) using a flame ionization detector (FID) system to study nitrogen-containing organic compounds (NOCs). The results were subsequently validated. After separation by column, the target components were converted to carbon dioxide using an oxidizing catalyst and then reduced to methane, followed by detection using an FID. SI-traceable testing mixtures containing NOCs (isoprocarb, napropamide, and pendimethalin) were prepared by the gravimetric blending method. These mixtures were analyzed using a post-column reaction GC-FID system; standard materials of hydrocarbons were used as calibrants in this analysis. The determined values were compared with the values obtained for samples prepared at the corresponding concentrations, and statistical analyses were performed in all cases. It was shown that the determined and prepared values agreed well with each other within the uncertainty limits.
在本研究中，我们应用带火焰离子化检测器（FID）系统的柱后反应气相色谱法（GC）来研究含氮有机化合物（NOCs）。随后对结果进行了验证。通过色谱柱分离后，目标组分使用氧化催化剂转化为二氧化碳，然后还原为甲烷，接着用FID进行检测。采用重量混合法制备了含NOCs（异丙威、敌草胺和二甲戊灵）的具有国际单位制（SI）可溯源性的测试混合物。使用柱后反应GC-FID系统对这些混合物进行分析；在该分析中使用烃类标准物质作为校准物。将测定值与在相应浓度下制备的样品所获得的值进行比较，并在所有情况下进行统计分析。结果表明，在不确定度范围内，测定值与制备值吻合良好。
