Determination of 22 Triazine Herbicides Residual in Corn by Enhanced Matrix Removal QuEChERS-Ultra Flow Liquid Chromatography-Tandem Mass Spectrometry
10.11895/j.issn.0253-3820.160012
- VernacularTitle:快速基质分散净化-超快速液相色谱-串联质谱法同时测定玉米中22种三嗪类除草剂残留
- Author:
Yan WU
;
Wei ZHAO
;
Yong LIU
;
Bing JIANG
;
Dongxu WEI
;
Yue GOU
;
Lili LI
;
Feng HAN
;
Yuangang ZU
- Publication Type:Journal Article
- Keywords:
Enhanced matrix removal;
QuEChERS;
Ultra flow liquid chromatography-tandem mass spectrometry;
Triazine herbicides;
Corn
- From:
Chinese Journal of Analytical Chemistry
2016;44(6):950-957
- CountryChina
- Language:Chinese
-
Abstract:
An enhance matrix removal ( EMR) QuEChERS method for simultaneous determination of 22 triazine herbicide residuals such as atrazine, propazine, terbumeton, and desmetryn in corn was established and validated. The corn samples were initially extracted with acetonitrile ( MeCN ) in high-speed homogenization, and the targeted pesticides were prepared using EMR-Lipid (Enhanced matrix removal-lipid) method to clean-up and EMR-Polish to salt out, separated on a Kinetex XB-C18 with acetonitrile and 0. 1%formic acid aqueous as eluant, and then detected by UFLC-MS / MS under positive ( ESI+ ) electrospray ionization and MRM models. The average recoveries of 22 herbicides were in the range of 72% -105% at the spiked level of 5, 10 and 20 μg / kg. The relative standard deviations were less than 15% . In the method validation, correlation coefficients were higher than 0. 993 with the linear range from 1. 0 μg / L to 50 μg / L. The qualitative analysis and quantitative analysis were investigated by UFLC-MS / MS and matrix-matched calibration curves. The results showed that EMR QuEChERS combined with UFLC-MS / MS purification method was rapid, accurate and sensitive for the determination of 22 triazine herbicides residues in corn.
