Citation: WU Yan, ZHAO Wei, LIU Yong, JIANG Bing, WEI Dong-Xu, GOU Yue, LI Li-Li, HAN Feng, ZU Yuan-Gang. Determination of 22 Triazine Herbicides Residual in Corn by Enhanced Matrix Removal QuEChERS-Ultra Flow Liquid Chromatography-Tandem Mass Spectrometry[J]. Chinese Journal of Analytical Chemistry, ;2016, 44(6): 950-957. doi: 10.11895/j.issn.0253-3820.160012 shu

Determination of 22 Triazine Herbicides Residual in Corn by Enhanced Matrix Removal QuEChERS-Ultra Flow Liquid Chromatography-Tandem Mass Spectrometry

WU Yan ^1,2, ,
ZHAO Wei ³ ,
LIU Yong ² ,
JIANG Bing ² ,
WEI Dong-Xu ² ,
GOU Yue ² ,
LI Li-Li ¹ ,
HAN Feng ¹ ,
ZU Yuan-Gang ¹

1.
Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China;
2.
China Heilongjiang Entry-Exit Inspection and Quaratine Bureau, Harbin 150001, China;
3.
Environmental Monitoring Center of Heilongjiang Province, Harbin 150056, China

Received Date: 7 January 2016
Revised Date: 22 March 2016

Figures(3)

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.
- Enhanced matrix removal,
- QuEChERS,
- Ultra flow liquid chromatography-tandem mass spectrometry,
- Triazine herbicides,
- Corn
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