Study on the photodegradation and microbiological degradation of pirimicarb insecticide by using liquid chromatography coupled with ion-trap mass spectrometry.
The intermediates of photodegradation and microbial degradation of pirimicarb insecticide were investigated by liquid chromatography coupled with ion-trap mass spectrometry (LC-IT-MS). Different intermediates were detected in the photodegradation and microbial degradation of pirimicarb. In the photodegradation of pirimicarb in aqueous solution 2-dimethylamino-5,6-dimethyl-4-hydroxypyrimidine (MW=167), 2-methylamino-5,6-dimethylpyrimidin-4-yl-dimethylcarbamate (MW=224) and 2-formylamino-5,6-dimethylpyrimidin-4-yl-dimethylcarbamate (MW=252) were the main products. It was found that 2-dimethylamino-5,6-dimethyl-4-hydroxypyrimidine (MW=167) was the major product in the microbial degradation of pirimicarb in soil.
Chen
Tianwen
T
Department of Chemistry, Ministry of Education Key Laboratory of Analysis and Detection Technology for Food Safety, Fuzhou University, Fuzhou, Fujian, China.
Fu
Fengfu
F
Chen
Zhixin
Z
Li
Danzhen
D
Zhang
Lan
L
Chen
Guonan
G
D001234:Aspergillus niger / Q000378:metabolism*; D002219:Carbamates / Q000032:analysis / Q000378:metabolism; D002853:Chromatography, Liquid / Q000379:methods*; D007306:Insecticides / Q000032:analysis / Q000378:metabolism; D013058:Mass Spectrometry / Q000379:methods*; D019906:Nuclear Magnetic Resonance, Biomolecular; D010782:Photolysis; D011743:Pyrimidines / Q000032:analysis / Q000378:metabolism; D014466:Ultraviolet Rays
D002219:Carbamates; D007306:Insecticides; D011743:Pyrimidines; C011994:pirimicarb