PMID- 18576219 OWN - NLM STAT- MEDLINE DCOM- 20080908 LR - 20191210 IS - 1532-4109 (Electronic) IS - 0360-1234 (Linking) VI - 43 IP - 5 DP - 2008 Jun TI - Evaluation of pressurized liquid extraction for the analysis of four pesticides in unpolished rice. PG - 390-4 LID - 10.1080/10934520701795608 [doi] AB - The aim of to evaluate efficiency of this study was extraction pressurized liquid extraction (PLE) for the analysis of four pesticides, fthalide, etofenprox, fenitrothion, and isoprothiolane, in unpolished rice by comparing with homogenization as a reference technique. The concentrations of four selected pesticides obtained by PLE with acetonitrile at 130 degrees C for 10 min x 2 cycles were comparable to those by homogenization with water-soaking. The repeatability of the analysis, represented as relative standard deviations (RSDs), were 1.4-3.6% (n = 3) for PLE at 130 degrees C and 1.2-3.8% (n = 3) for homogenization with water-soaking. Recovery yields of surrogates were 75-88% and 87-109% for PLE at 130 degrees C and homogenization with water-soaking, respectively, and these were satisfactory according to the method of positive list. This study suggested that PLE can be applied for the analysis of selected four pesticides in unpolished rice as well as homogenization with water-soaking. FAU - Otake, Takamitsu AU - Otake T AD - National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki, Japan. t-ootake@aist.go.jp FAU - Aoyagi, Yoshie AU - Aoyagi Y FAU - Matsuo, Mayumi AU - Matsuo M FAU - Itoh, Nobuyasu AU - Itoh N FAU - Yarita, Takashi AU - Yarita T LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Environ Sci Health B JT - Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes JID - 7607167 RN - 0 (Pesticides) RN - 0 (Soil Pollutants) RN - 059QF0KO0R (Water) SB - IM MH - Chromatography, Gas MH - *Clinical Laboratory Techniques MH - Mass Spectrometry MH - Oryza/*chemistry MH - Pesticides/*analysis MH - Reference Standards MH - Reproducibility of Results MH - Soil Pollutants/*analysis MH - Solubility MH - Temperature MH - Water/*chemistry EDAT- 2008/06/26 09:00 MHDA- 2008/09/09 09:00 CRDT- 2008/06/26 09:00 PHST- 2008/06/26 09:00 [pubmed] PHST- 2008/09/09 09:00 [medline] PHST- 2008/06/26 09:00 [entrez] AID - 794426922 [pii] AID - 10.1080/10934520701795608 [doi] PST - ppublish SO - J Environ Sci Health B. 2008 Jun;43(5):390-4. doi: 10.1080/10934520701795608.