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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Chen, Ligang Li, Bin |
| Description | Country affiliation: China Author Affiliation: Chen L ( Department of Chemistry, College of Science, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China. ligangchen2010@yahoo.cn) |
| Abstract | A new method based on matrix solid-phase dispersion (MSPD) coupled with liquid chromatography tandem mass spectrometry has been developed for the determination of imidacloprid in rice. The molecularly imprinted polymers were synthesized and applied as the dispersant of MSPD for selective extraction of imidacloprid from rice, while interferences originated from sample matrices were eliminated simultaneously. The satisfactory recovery of imidacloprid was obtained by the optimized extraction conditions: 1:2 as the ratio of sample to MIPs; 8 min as the dispersion time; 20% aqueous methanol as washing solvent and methanol as elution solvent. Under the optimal conditions, the linearity of imidacloprid in rice sample was achieved in the range of 10-1000 ng/g, and limit of detection was 2.4 ng/g. The relative standard deviations of intra- and inter-day tests ranging from 4.5% to 5.9% and from 4.8% to 7.1% are obtained, respectively. The proposed method was applied to the determination of imidacloprid in eight rice samples with recoveries in the range of 83.8-92.5%. |
| File Format | HTM / HTML |
| ISSN | 15700232 |
| Volume Number | 897 |
| e-ISSN | 1873376X |
| Journal | Journal of Chromatography B |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2012-05-15 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Analytical Chemistry Chromatography, Liquid Methods Imidazoles Analysis Nitro Compounds Oryza Sativa Chemistry Pesticide Residues Solid Phase Extraction Tandem Mass Spectrometry Limit Of Detection Methanol Molecular Imprinting Reproducibility Of Results Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Medicine Analytical Chemistry Clinical Biochemistry Biochemistry |
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