Multiresidue analysis and monitoring of pesticides in rice by pressurized liquid extraction

作者：Otake Takamitsu^*; Aoyagi Yoshie; Yarita Takashi

来源：Journal of Environmental Science and Health - Part B: Pesticides, Food Contaminants, and Agricultural Wastes , 2009, 44(5): 423-427.

DOI：10.1080/03601230902934603

• Pressurized liquid extraction
• pesticide analysis
• pesticide residue
• pesticide monitoring
• rice

The aim of this study was to assess the performance of a method of analyzing pesticides in rice by using pressurized liquid extraction (PLE) and to perform a preliminary monitoring by using that method. The instrumental quantification limit, instrumental detection limit, method quantification limit, and method detection limit were determined. PLE temperature was also optimized for 6 target pesticides. Mean recoveries of spiked rice with target pesticides (4 ng/g and 40 ng/g) were 83%-109% with the repeatability of the analysis, represented as relative standard deviations, ranged from 1.3% to 11% (n = 5) for PLE at 130 degrees C. These results were satisfactory according to the method of positive list in Japan. In a preliminary analysis of 10 target pesticides in 54 commercial rice samples, ferimzone was detected in only one unpolished rice sample.

• 出版日期2009