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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Li, Yanjie Hou, Changjun Lei, Jincan Deng, Bo Huang, Jing Yang, Mei |
| Description | Author Affiliation: Li Y ( Key Laboratory of Biorheology Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University.) |
| Abstract | Organophosphorus pesticides (OPs) represent a very important class of pesticides that are widely used in agriculture because of their relatively high-performance and moderate environmental persistence, hence the sensitive and specific detection of OPs is highly significant. Based on the inhibitory effect of acetylcholinesterase (AChE) induced by inhibitors, including OPs and carbamates, a colorimetric analysis was used for detection of OPs with computer image analysis of color density in CMYK (cyan, magenta, yellow and black) color space and non-linear modeling. The results showed that there was a gradually weakened trend of yellow intensity with the increase of the concentration of dichlorvos. The quantitative analysis of dichlorvos was achieved by Artificial Neural Network (ANN) modeling, and the results showed that the established model had a good predictive ability between training sets and predictive sets. Real cabbage samples containing dichlorvos were detected by colorimetry and gas chromatography (GC), respectively. The results showed that there was no significant difference between colorimetry and GC (P > 0.05). The experiments of accuracy, precision and repeatability revealed good performance for detection of OPs. AChE can also be inhibited by carbamates, and therefore this method has potential applications in real samples for OPs and carbamates because of high selectivity and sensitivity. |
| File Format | HTM / HTML |
| ISSN | 09106340 |
| e-ISSN | 13482246 |
| Journal | Analytical Sciences |
| Issue Number | 7 |
| Volume Number | 32 |
| Language | English |
| Publisher | The Japan Society for Analytical Chemistry |
| Publisher Date | 2016-01-01 |
| Publisher Place | Japan |
| Access Restriction | Open |
| Subject Keyword | Discipline Analytical Discipline Chemistry Techniques |
| Content Type | Text |
| Resource Type | Article |
| Subject | Analytical Chemistry |
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