核磁共振法测定42%威百亩水剂的含量  

Determination of the Content of 42% Metam-sodium SL by Nuclear Magnetic Resonance Spectrometry

作　　者：李姣 楼圣婷 祝晴晴 余晓峰 Li Jiao;Lou Shengting;Zhu Qingqing;Yu Xiaofeng(Zhejiang Chemical Products Quality Inspection Co.,Ltd,Hangzhou Zhejiang 310023,China)

机构地区：[1]浙江省化工产品质量检验站有限公司,浙江杭州310023

出　　处：《农药科学与管理》2024年第11期33-36,共4页Pesticide Science and Administration

摘　　要：采用定量核磁共振法(^(1)H qNMR),建立了42%威百亩水剂样品定量分析方法。以1,3,5-三甲氧基苯为内标物,氘代二甲基亚砜为溶剂,以威百亩δ2.80质子信号峰为定量峰、1,3,5-三甲氧基苯δ6.09质子信号峰为内标峰,计算威百亩含量。方法重复性实验RSD为0.05%,稳定性实验RSD为0.02%,平均回收率为100.69%,RSD为1.39%,并与化学滴定法验证,结果基本一致。该方法用于威百亩含量分析,快速简便,准确度高。A quantitative analytical method for 42%Metam-sodium SL was developed using nuclear magnetic resonance spectrometry(^(1)H qNMR).With 1,3,5-Trimethoxybenzene as the internal standard and DMSO-d6 as the solvent,the proton signal peak at δ 2.80 of Metam-sodium and the peak at δ 6.09 of 1,3,5-Trimethoxybenzene were served as quantitative and internal standard peaks,respectively,to calculate the content of 42% Metam-sodium.The RSD of the repeatability test was0.05%,and the RSD of the stability test was 0.02%.The average recovery rate was 100.69%,with an RSD of 1.39%.This method was validated against chemical titration method,and the results were generally consistent.The method is fast,simple,and highly accurate for analyzing the content of Metam-sodium.

关 键 词：定量核磁共振法(^(1)H qNMR) 42%威百亩水剂 1 3 5-三甲氧基苯内标物 

分 类 号：S482[农业科学—农药学]