Abstract：
:A versatile liquid chromatography tandem mass spectrometry method with modified QuEChERS (quick, easy, cheap, effective, rugged, and safe) sample preparation was developed for the determination of rimsulfuron, mesotrione, fluroxypyr-meptyl, and fluroxypyr. By adjusting the amount of graphitized carbon black, the herbicide analytes could be quantified with satisfactory recoveries in the range of 80-110%. A dissipation kinetics study conducted under open field conditions at two sites during 2014 showed first order equations with half-lives between 0.6d and 3.6d, illustrating an appropriate degree of stability and safety. The dissipation kinetics were different in the different matrices. Although the herbicides had higher initial residues in straw than those in soil, they degraded faster in straw. The terminal residues for the herbicides formulated in two water dispersible granules were all below maximum residue limits. These results not only gave insights about the analytes but also contributed to environmental protection and food safety.
journal_name
Food Chemjournal_title
Food chemistryauthors
Pang N,Wang T,Hu Jdoi
10.1016/j.foodchem.2015.05.081subject
Has Abstractpub_date
2016-01-01 00:00:00pages
793-800eissn
0308-8146issn
1873-7072pii
S0308-8146(15)00816-Xjournal_volume
190pub_type
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