农药科学与管理2024，Vol.45Issue(11) ：33-36.

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

李姣 楼圣婷 祝晴晴 余晓峰
农药科学与管理2024，Vol.45Issue(11) ：33-36.
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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

李姣 1楼圣婷 1祝晴晴 1余晓峰1
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作者信息

  • 1. 浙江省化工产品质量检验站有限公司,浙江 杭州 310023
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摘要

采用定量核磁共振法(1H 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δ 2.80质子信号峰为定量峰、1,3,5-三甲氧基苯δ 6.09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.

Abstract

A quantitative analytical method for 42% Metam-sodium SL was developed using nuclear magnetic resonance spectrometry(1H 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 was 0.05%,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(1H/qNMR)/42%威百亩水剂/1,3,5-三甲氧基苯内标物

Key words

quantitative nuclear magnetic resonance spectrometry(1H qNMR)/42%metam-sodium SL/1,3,5-trimethoxybenzene internal standard

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出版年

2024
农药科学与管理
农业部农药检定所

农药科学与管理

CSTPCD
影响因子：0.511
ISSN：1002-5480
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