Direct determination of atrazine residue on Chinese cabbage leaf using desorption electrospray ionization-tandem mass spectrometry and its application for diagnosing atrazine drift phytotoxicity.
A method was developed for the determination of atrazine residue and phytotoxicity on a nontargeted plant, the Chinese cabbage. The analysis was done by desorption electrospray ionization combined with ion trap MS/MS. Within the range of 63.13 to 2525 pg/mm2 of atrazine on the specimen, the linear relationship of the average peak area of extracted product ion m/z 174 (y) versus the surface concentration of atrazine (x) was estimated as y = 5066.5x - 85779; r was 0.9994, with RSD between 3.37 and 26.17%. The LOQ of atrazine on the leaf surface was lower than 63.13 pg/mm2. The method is highly applicable to detect atrazine residue and evaluate atrazine phytotoxicity on Chinese cabbage leaf with good accuracy, selectivity, sensitivity, and specificity.
Zhang
Xin-Zhong
XZ
China Agricultural University, College of Science, Department of Applied Chemistry, Beijing, 100193, People's Republic of China. zxz.1982@163.com
Li
Chong-Jiu
CJ
Chen
Shan-Shan
SS
Li
Xiao-Juan
XJ
Han
Hao
H
Ma
Xiao-Dong
XD
D001280:Atrazine / Q000032:analysis*; D001937:Brassica / Q000187:drug effects / Q000378:metabolism; D002623:Chemistry Techniques, Analytical; D005504:Food Analysis / Q000379:methods*; D005506:Food Contamination; D005740:Gases; D013058:Mass Spectrometry / Q000379:methods; D010573:Pesticide Residues / Q000032:analysis; D015203:Reproducibility of Results; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*; D013997:Time Factors
D005740:Gases; D010573:Pesticide Residues; D001280:Atrazine