PMID- 30650669 OWN - NLM STAT- MEDLINE DCOM- 20190523 LR - 20200309 IS - 1660-4601 (Electronic) IS - 1661-7827 (Print) IS - 1660-4601 (Linking) VI - 16 IP - 2 DP - 2019 Jan 15 TI - Dissipation Dynamics and Residue of Four Herbicides in Paddy Fields Using HPLC-MS/MS and GC-MS. LID - 10.3390/ijerph16020236 [doi] LID - 236 AB - The dissipation dynamics and residue of pyrazosulfuron-ethyl, bensulfuron-methyl, acetochlor, and butachlor in paddy fields at Good Agricultural Practices (GAP) condition were carefully investigated in this study. The four herbicides' residues were determined based on a quick, easy, cheap, rugged, safe (QuEChERS) method coupled with HPLC-MS/MS and GC-MS. The limit of detection (LOD) for pyrazosulfuron-ethyl, bensulfuron-methyl, acetochlor, and butachlor in all matrices ranged from 0.04(-)1.0 ng. The limit of quantification (LOQ) of the four herbicides ranged from 0.01(-)0.1 mg/kg. Moreover, the average recoveries of the four herbicides ranged from 78.9(-)108% with relative standard deviations (RSDs) less than 15% at three different fortified levels for different matrices. The dissipation results indicated that the average half-lives (t(1/2)) of the four herbicides in soil were in the range of 3.5(-)17.8 days, and more than 95% of the four herbicides dissipated within 5 days in water. Furthermore, the final residues of the four herbicides were all below the LOQ at harvest time. Such results highlight the dissipation dynamics and residue of the four herbicides in a rice cropping system and contribute to risk assessment as well as scientific guidance on the proper and safe application of herbicides in paddy fields. FAU - Yu, Qian AU - Yu Q AD - Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400715, China. qianyu_swu@163.com. AD - Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China. qianyu_swu@163.com. FAU - Zhang, Ping AU - Zhang P AD - Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400715, China. pingz@swu.edu.cn. AD - Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China. pingz@swu.edu.cn. FAU - He, Yuhan AU - He Y AD - Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400715, China. pingz028@163.com. AD - Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China. pingz028@163.com. FAU - Xu, Zhifeng AU - Xu Z AD - Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400715, China. xzf2018@swu.edu.cn. AD - Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China. xzf2018@swu.edu.cn. FAU - He, Xiulong AU - He X AD - Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400715, China. zpcauz@163.com. AD - Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China. zpcauz@163.com. FAU - Hu, Yuan AU - Hu Y AD - Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400715, China. helinok@vip.tom.com. AD - Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China. helinok@vip.tom.com. FAU - Zhang, Hongjun AU - Zhang H AD - Institute for the Control of Agrochemicals, Ministry of Agriculture, Beijing 100125, China. zhanghongjun@agri.gov.cn. FAU - He, Lin AU - He L AD - Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400715, China. helinok@vip.tom.com. AD - Academy of Agricultural Sciences, Southwest University, Chongqing 400715, China. helinok@vip.tom.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190115 PL - Switzerland TA - Int J Environ Res Public Health JT - International journal of environmental research and public health JID - 101238455 RN - 0 (Acetanilides) RN - 0 (Herbicides) RN - 0 (Pesticide Residues) RN - 0 (Pyrazoles) RN - 0 (Pyrimidines) RN - 0 (Soil Pollutants) RN - 0 (Sulfonylurea Compounds) RN - 0 (Toluidines) RN - 3K2T2626KI (ethyl 5-(4,6-dimethoxypyrimidin-2-ylcarbamoylsulfamoyl)-1-methylpyrazole-4-carboxylate) RN - 83055-99-6 (methyl bensulfuron) RN - 8L08WMO94K (acetochlor) RN - 94NU90OO5K (butachlor) SB - IM MH - Acetanilides/analysis MH - Chromatography, High Pressure Liquid MH - Environmental Monitoring MH - Gas Chromatography-Mass Spectrometry MH - Half-Life MH - Herbicides/*analysis MH - *Oryza MH - Pesticide Residues/*analysis MH - Pyrazoles/analysis MH - Pyrimidines/analysis MH - Soil Pollutants/*analysis MH - Sulfonylurea Compounds/analysis MH - Tandem Mass Spectrometry MH - Toluidines/analysis PMC - PMC6352214 OTO - NOTNLM OT - GC-MS OT - HPLC-MS/MS OT - dissipation OT - herbicide OT - residue OT - rice COIS- the authors declare no conflicts of interest. EDAT- 2019/01/18 06:00 MHDA- 2019/05/24 06:00 PMCR- 2019/01/01 CRDT- 2019/01/18 06:00 PHST- 2018/11/30 00:00 [received] PHST- 2019/01/10 00:00 [revised] PHST- 2019/01/11 00:00 [accepted] PHST- 2019/01/18 06:00 [entrez] PHST- 2019/01/18 06:00 [pubmed] PHST- 2019/05/24 06:00 [medline] PHST- 2019/01/01 00:00 [pmc-release] AID - ijerph16020236 [pii] AID - ijerph-16-00236 [pii] AID - 10.3390/ijerph16020236 [doi] PST - epublish SO - Int J Environ Res Public Health. 2019 Jan 15;16(2):236. doi: 10.3390/ijerph16020236.