An uncertainty budget for the determination of the purity of glyphosate by quantitative nuclear magnetic resonance (QNMR) spectroscopy

被引：47

作者：

Al-Deen, TS

Hibbert, DB ^{[1
]}

Hook, JM

Wells, RJ

机构：

[1] Univ New S Wales, NMR Facil, Sydney, NSW 2052, Australia

[2] Univ New S Wales, Sch Chem Sci, Sydney, NSW 2052, Australia

[3] Bob Wells & Associates, Gordon, NSW 2072, Australia

来源：

ACCREDITATION AND QUALITY ASSURANCE | 2004年 / 9卷 / 1-2期

关键词：

uncertainty budget; measurement uncertainty; method validation; quantitative nuclear magnetic resonance (QNMR); glyphosate; agrochemicals;

D O I：

10.1007/s00769-003-0737-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An uncertainty budget is presented for the results of measurements of purity of the agrochemical glyphosate using H-1 and P-31 quantitative nuclear magnetic resonance (QNMR) spectroscopy. The budget combines intralaboratory precision from repeated independent measurements of a batch, and other Type A and Type B effects. Consideration of correlation of uncertainties in ratios of mass determinations has been included. Expanded uncertainties of the purity for single detern-finations of purity by H-1 and P-31 QNMR are 0.66% and 0.82% (95% confidence interval, k=2), respectively.

引用

页码：55 / 63

页数：9

共 30 条

[1] 19F nuclear magnetic resonance spectroscopy for the quantitative detection and classification of carbonyl groups in lignins [J].