PMID- 15807106 OWN - NLM STAT- MEDLINE DCOM- 20050913 LR - 20220408 IS - 1000-8713 (Print) IS - 1000-8713 (Linking) VI - 22 IP - 6 DP - 2004 Nov TI - [Determination of bisphenol A and 4-nonylphenol in rat tissues by high performance liquid chromatography with fluorescence detection]. PG - 579-82 AB - A simple and highly sensitive method has been developed for the determination of bisphenol A (BPA) and 4-nonylphenol (4-NP) in rat tissues by high performance liquid chromatography (HPLC) with fluorescence detection. The rat tissue samples were homogenized-with methanol-ammonium acetate buffer (2:8, v/v) by a high-speed homogenizer and then BPA and 4-NP were extracted by a mixed solvent of n-hexane and diethyl ether (7:3, v/v). The organic layer was evaporated with a stream of nitrogen, and the residue was dissolved in the mobile phase. The chromatographic operating conditions were a C18 column (250 mm x 4. 6 mm i.d., 5 microm), acetonitrile-ammonium acetate buffer (pH 4.5) (75:25, v/v) as mobile phase at a flow rate of 1 mL/min, fluorescence detection with the excitation and emission wavelengths at 227 nm and 313 nm, respectively. Average recoveries for rat tissues at three different levels were in the range of 82.0% -95.4% for BPA and 81.2% -96.5% for 4-NP. The relative standard deviations (RSDs) were 0. 37% - 5.28% and the detection limits were 4.0, 4.6, 3.2, 3.3 ng/g for BPA and 12.0, 15.6, 11.8, 13.8 ng/g for 4-NP in liver, kidney, heart and brain tissues, respectively. The intra-day precisions were 0.89% -4.50%, and the inter-day precisions were 3.10% - 12.40%. These results demonstrated that the proposed method is simple, sensitive, and reliable for the determination of BPA and 4-NP in animal tissues. FAU - Xiao, Quanwei AU - Xiao Q AD - West China School of Public Health, Sichuan University, Chengdu 610041, China. FAU - Li, Yuanqian AU - Li Y FAU - Wu, Desheng AU - Wu D LA - chi PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Se Pu JT - Se pu = Chinese journal of chromatography JID - 9424804 RN - 0 (Benzhydryl Compounds) RN - 0 (Phenols) RN - I03GBV4WEL (4-nonylphenol) RN - MLT3645I99 (bisphenol A) SB - IM MH - Animals MH - Benzhydryl Compounds MH - *Brain Chemistry MH - Chromatography, High Pressure Liquid MH - Female MH - Phenols/*analysis MH - Rats MH - Rats, Sprague-Dawley MH - Spectrometry, Fluorescence/methods EDAT- 2005/04/06 09:00 MHDA- 2005/09/15 09:00 CRDT- 2005/04/06 09:00 PHST- 2005/04/06 09:00 [pubmed] PHST- 2005/09/15 09:00 [medline] PHST- 2005/04/06 09:00 [entrez] PST - ppublish SO - Se Pu. 2004 Nov;22(6):579-82.