Search

In order to evaluate the pesticide residue levels in apricots in Shanxi Province, an ultraperformance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method was established for the determination of 29 pesticides such as imidacloprid and difenoconazole in apricots, and the pesticide residues in apricot samples were analyzed. The results showed that the linearity of 29 pesticides were acceptable in the range of 0.001~0.2 mg/kg with R 2 > 0.99. The average recoveries ranged from 63% to 117% with the relative standard deviation (RSD) of 0.7% to 7.7% at the spiked levels of 0.005, 0.1 and 1 mg/kg, and the limit of quantification (LOQ) was 0.005 mg/kg, which met the requirements of pesticide multi-residue analysis. The established method was used to analyze 42 apricot samples collected in Shanxi Province, and the results showed that the pesticides were detected in 26 of the 42 apricot samples, with a detection rate of 61.9%. Imidacloprid had the highest detection rate (45.2%), and the residue levels ranged from < 0.005~0.57 mg/kg. A total of 13 pesticides were detected, none of which were registered on apricots, indicating that as a distinctive minor crop, there are problems in the pests control of apricot, such as the lack of pesticides available and no standards to follow, which affected the safety of agricultural products. By comparing the current status of pesticide residue limit standards in apricot in China with that in other countries, it is suggested that the pesticide residue supervision should be strengthened in China, and the necessity and feasibility of the establishment of MRL of five pesticides, namely cyazofamid, epoxiconazole, etoxazole, paclobutrazol and pyridaben, in apricot should be further investigated. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Pesticide Science / Nongyaoxue Xuebao is the property of Chinese Journal of Pesticide Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agricultural Resources & Environment / Nongye Ziyuan yu Huanjing Xuebao is the property of Journal of Agricultural Resources & Environment Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Pesticide Science / Nongyaoxue Xuebao is the property of Chinese Journal of Pesticide Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Pesticide Science / Nongyaoxue Xuebao is the property of Chinese Journal of Pesticide Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The emulsifiable concentrates containing harmful organic solvents such as benzene, toluene, xylene, etc. could pose potential risks to the ecological environment and human health due to their lowflash points, easy volatility, and high toxicity. This paper reviewed the usage of organic solvents inpesticide emulsifiable concentrates, highlighted their potential hazards, and introduced the research progress of organic solvents substitution by bio-based solvents, mineral-based solvents, and artificially synthetic solvents. These eco-friendly alternative solvents with low toxicity showed good potential in the application of emulsifiable concentrates. However, the selection of alternative solvents through experiments was time-consuming and labor-intensive. The application of COSMO-RS thermodynamic model wasbased on the theoretical prediction of pesticide solubility in alternative solvents, and was verified by experiments in the laboratory. It could accelerate the screening of alternative solvents with less timeand materials, which is helpful to the development of eco-friendly emulsifiable concentrates. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of High Pressure Physics is the property of Chinese Journal of High Pressure Physics Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Pesticide Science / Nongyaoxue Xuebao is the property of Chinese Journal of Pesticide Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)