| Content Provider |
World Health Organization (WHO)-Global Index Medicus |
| Author |
Li, Fangbing Han, Yongtao Zhao, Pengyue Li, Yanjie Li, Xuesheng Song, Shuangyu Zou, Nan Qin, Yuhong Zhang, Yuan Pan, Canping Fan, Sufang |
| Description |
Country affiliation: China Author Affiliation: Qin Y ( Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.); Zhao P ( Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.); Fan S ( Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.); Han Y ( Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.); Li Y ( Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.); Zou N ( Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.); Song S ( Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.); Zhang Y ( Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.); Li F ( Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China.); Li X ( Institute of Pesticide and Environmental Toxicology, Guangxi University, Nanning 530005, People's Republic of China.); Pan C ( Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China) |
| Abstract |
In this study, dispersive-Solid Phase Extraction (d-SPE) cleanup and multi-plug filtration cleanup (m-PFC) methods were compared for 25 representative pesticides in six matrices (wheat, spinach, carrot, apple, citrus and peanut) by QuEChERS-LC-ESI-MS/MS detection. The type of sorbents in dispersive-SPE (d-SPE) was optimized for the above matrices. Multi-walled carbon nanotubes (MWCNTs), which mixed other materials like PSA (Primary Secondary Amines), GCB (Graphitized Carbon Black) and C18 (Octadecyl-silica), showed brilliant cleanup performance in multi residue monitoring (MRM) pesticide residue analysis. Cleanup effects with d-SPE and m-PFC methods were examined. When spiked at 3 concentration levels of 10, 100, 500 µg/kg in above matrices, for both d-SPE and m-PFC methods, the recoveries ranged from 70 to 110% with relative standard deviations (RSDs) lower than 20%. Limits of quantification (LOQs) for both cleanup methods ranged from 1 to 25 µg/kg. Matrix-matched calibrations were performed with the coefficients of determination more than 0.99 between concentration levels of 10-1000 µg/kg. It was found that m-PFC was more convenient and effective than d-SPE with the same sorbents, due to the increased contact time and contact area between the extracts and compressed sorbents. The study demonstrated that m-PFC method could be used as a rapid, convenient and high-throughput cleanup method for analysis of pesticide residues. |
| ISSN |
00219673 |
| Volume Number |
1385 |
| e-ISSN |
18733778 |
| Journal |
Journal of Chromatography A |
| Language |
English |
| Publisher |
Elsevier |
| Publisher Date |
2015-03-13 |
| Publisher Place |
Netherlands |
| Access Restriction |
One Nation One Subscription (ONOS) |
| Subject Keyword |
Chemistry Techniques, Analytical Methods Chromatography, Liquid Food Contamination Analysis Nanotubes, Carbon Chemistry Pesticide Residues Solid Phase Extraction Tandem Mass Spectrometry Filtration Limit Of Detection Journal Article Research Support, Non-u.s. Gov't Discipline Analytical Chemistry |
| Content Type |
Text |
| Resource Type |
Article |
| Subject |
Organic Chemistry Medicine Analytical Chemistry Biochemistry |
