Enhanced thread spray mass spectrometry: a general method for direct pesticide analysis in various complex matrices.
Enhanced thread spray mass spectrometry: a general method for direct pesticide analysis in various complex matrices.
复制标题
增强型螺纹喷雾质谱法：直接分析各种复杂基质中农药的通用方法。
DOI：
10.1039/d1an00651g
复制
发表时间：
2021-09-13
期刊：
影响因子：
--
通讯作者：
Badu-Tawiah AK
中科院分区：
文献类型：
--
作者：
Jackson S;Badu-Tawiah AK
测定各种基质中的农药残留是一个持续的挑战，因为低浓度和大量干扰内源化合物可以与分析物共提取。在此，我们描述了纤维素线既是各种基质的合适采样介质，也是通过改进的线喷雾质谱仪(MS)作为直接分析平台的使用。在将直流电位施加到湿线上后，增强了提取和随后产生微小纳米液滴的能力，使得无需事先样品处理即可实现对农药的超灵敏检测。该方法用于地表水中草甘膦及其代谢物氨基甲基膦酸的测定，检出限为12.2μg/m L。用内标法测定阿特拉津的最低检出限为0.74 ng/m L。增强型线程喷雾MS平台在直接分析二苯胺和噻菌灵时也被证明是有效的，这使得能够在不完全破坏水果的情况下对水果(表面和内部)的采后农药处理进行评估。纤维素线基质使不同基质中不同结构的农药的采样和直接质谱分析成为可能，而无需样品制备
Determination of pesticide residues in a wide variety of matrices is an ongoing challenge due to low concentration and substantial amounts of interfering endogenous compounds that can be coextracted with the analytes. Herein, we describe the use of cellulose thread both as a suitable sampling medium for various matrices and as direct analysis platform through an improved thread spray mass spectrometry (MS) approach. The enhanced extraction and subsequent generation of tiny nanodroplets after the application of DC potential to the wet thread enabled ultra-sensitive detection of pesticides without prior sample treatment. This methodology was applied to quantify glyphosate and its metabolite, aminomethylphosphonic acid, in surface water at 12.2 μg/mL limit of detection (LOD) via standard addition calibration. Application of internal standard calibration for the analysis of atrazine afforded LOD of 0.74 ng/mL. The enhanced thread spray MS platform also proved effective when applied for direct analysis of diphenylamine and thiabendazole, which enabled the evaluation of post-harvest pesticide treatment of fruits (surface and interior) without complete destruction of the fruits. Cellulose thread substrates enable sampling and direct mass spectrometry analysis of structurally different pesticides from various matrices without sample preparation
登录
查看更多内容
影响因子：
16.6
作者：
Gomez-Rios, German Augusto;Pawliszyn, Janusz
通讯作者：
Pawliszyn, Janusz
影响因子：
2.5
作者：
Liu, Qing;Farley, Katherine L.;Phelps, Mitch A.
通讯作者：
Phelps, Mitch A.
影响因子：
7.4
作者：
Gionfriddo, Emanuela;Souza-Silva, Erica A.;Pawliszyn, Janusz
通讯作者：
Pawliszyn, Janusz
影响因子：
13.1
作者：
Farre, Marinella;Barcelo, Damia
通讯作者：
Barcelo, Damia
影响因子：
8.8
作者：
Ines Bonansea, Rocio;Valeria Ame, Maria;Alberto Wunderlin, Daniel
通讯作者：
Alberto Wunderlin, Daniel