Residue Analysis of SIOC0426 in Environmental Samples and Its Degradation in Soil
10.11895/j.issn.0253-3820.170338
- VernacularTitle:超高效液相色谱-串联质谱法测定环境样品中溴嘧氯草醚残留及其在土壤中降解特性的研究
- Author:
Mei Hong HE
1
;
Min WU
;
Rong Chun ZHANG
;
Zhong Jian YU
;
Hua ZHAO
;
Hong Ya ZHU
;
Yu Kai HE
;
Peng Chang ZHANG
;
Ming Lei CAI
;
Qing-Hong LING-YING
;
TANG XU
Author Information
1. 省部共建国家重点实验室培育基地"浙江省植物有害生物防控重点实验室"
- Keywords:
4-Bromo-N-( 2-chloro-6-( 4;
6-dimethoxypyrimidin-2-yloxy ) benzyl ) aniline;
Residue;
Soil degradation;
Ultra performance liquid chromatography-tandem mass spectrometry
- From:
Chinese Journal of Analytical Chemistry
2017;45(10):1564-1570
- CountryChina
- Language:Chinese
-
Abstract:
An analytical method based on ultra performance liquid chromatography-tandem mass spectrometry was developed for the determination of SIOC0426 residues in environment samples ( soil, sediment and water) . The fate of SIOC0426 in three kinds of soils was also evaluated. The target compound was extracted with acetonitrile, cleaned up by C18 cartridge, and analyzed by gradient ultra performance liquid chromatography-tandem mass spectrometry with electrospray ionization under positive mode ( ESI+) using a UPLC BEH C18 column. The method was validated using fortified soil, sediment and water. Mean recoveries of SIOC0426 at three spiked levels ( 0 . 005 , 0 . 05 and 2 . 0 mg/kg ) ranged from 87% to 106% with relative standard deviations of 2. 8%-8. 0%. Limits of quantification ( LOQs) of SIOC0426 in soil ( sediment) and water were 0. 2 μg/kg and 0. 2 μg/L, respectively. Linear calibration functions with correlation coefficients R2>0. 9999 were obtained in the concentration range of 0. 5-20 μg/L. This method was applied to the analysis of SIOC0426 residues in soil degradation samples. The results showed that the half-life of SIOC0426 ranged from 1. 72 days to 28. 2 days in three kinds of soils under aerobiotic conditions. While, the half-life of SIOC0426 ranged from 2. 93 days to 31. 4 days in three kinds of soils under anaerobic conditions. The degradation speed of SIOC0426 under aerobiotic conditions was faster than that under anaerobic conditions in the same soil. And the degradation speed of SIOC0426 in soils may be connected with the pH value of soils, cation exchange capacity and soil texture.
