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[Determination of ten pesticides of pyrazoles and pyrroles in tea by accelerated solvent extraction coupled with gas chromatography-tandem mass spectrometry].
| Content Provider | Semantic Scholar |
|---|---|
| Author | Xu, Dunming Lu, Shengyu Chen, Dajie Lan, Jinchang Zhang, Zhigang Yang, Fang Zhou, Yu |
| Copyright Year | 2013 |
| Abstract | An effective method was developed and applied to determine the residues of ten pesticides of pyrazoles and pyrroles in tea by accelerated solvent extraction coupled with gas chromatography-tandem mass spectrometry (ASE-GC-MS/MS). The samples were extracted with ethyl acetate-hexane (1:1, v/v) for 5 min at 1.03 x 10(7) Pa and 100 degree C for one cycle. Then, they were purified by Envi-Carb/PSA column, and eluted by ethyl acetate-hexane (1:1, v/v). The analytes were determined by GC-MS/MS and quantified by external standard method. The limits of quantification were 0.003 mg/kg for fenpyroximate, 0.001 mg/kg for fipronil-sulfide, 0.002 mg/kg for fipronil, 0.005 mg/kg for fipronil-sulfone, 0.002 mg/kg for chlorfenapyr, 0.006 mg/kg for flusilazole, 0.001 mg/kg for difenzoquat, 0.001 mg/kg for pyraflufen-ethyl, 0.000 3 mg/kg for tebufenpyrad and 0.005 mg/kg for tolfenpyrad. The results show that the proposed method is sensitive and accurate for the determination of the ten pesticide residues. |
| File Format | PDF HTM / HTML |
| DOI | 10.3724/sp.j.1123.2012.10003 |
| PubMed reference number | 23785993 |
| Journal | Medline |
| Volume Number | 31 |
| Issue Number | 3 |
| Journal | Se pu = Chinese journal of chromatography |
| Alternate Webpage(s) | http://www.chrom-china.com/fileup/PDF/sp1210003.pdf |
| Alternate Webpage(s) | https://doi.org/10.3724/sp.j.1123.2012.10003 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
