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- W2134236872 abstract "An analytical method the determination of benzo(a)pyrene (BaP) and its hydroxylated metabolites, 1hydroxybenzo(a)pyrene (1-OHBaP), 3-hydroxybenzo(a)pyrene (3-OHBaP), benzo(a)pyrene-4,5-dihydrodiol (4,5-diolBaP) and benzo(a)pyrene-7,8-dihydrodiol (7,8-diolBaP), in rat urine and plasma has been developed by HPLC/FLD and GC/MS. The derivatization with alkyl iodide was employed to improve the resolution and the detection of two mono hydroxylated metabolites, 1-OHBaP and 3-OHBaP, in LC and GC. BaP and its four metabolites in spiked urine were successfully separated by gradient elution on reverse phase ODS C 18 column (4.6 mm I.D., 100 mm length, particle size 5 μm) using a binary mixture of MeOH/H2O (85/15, v/v) as mobile phase after ethylation at 90 o C for 10 min. The extraction recoveries of BaP and its metabolites in spiked samples with liquid-liquid extraction, which was better than solid phase extraction, were in the range of 90.3101.6% in n-hexane for urine and 95.7-106.3% in acetone for plasma, respectively. The calibration curves has shown good linearity with the correlation coefficients (R 2 ) varying from 0.992 to 1.000 for urine and from 0.996 to 1.000 for plasma, respectively. The detection limits of all analytes were obtained in the range of 0.010.1 ng/mL for urine and 0.1-0.4 ng/mL for plasma, respectively. The metabolites of BaP were excreted as mono hydroxy and dihydrodiol forms after intraperitoneal injection of 20 mg/kg of BaP to rats. The total amounts of BaP and four metabolites excreted in dosed rat urine were 3.79 ng over the 0-96 hr period from adminstration and the excretional recovery was less than 0.065% of the injection amounts of BaP. The proposed method was successfully applied to the determination of BaP and its hydroxylated metabolites in rat urine and plasma for the pharmacokinetic studies." @default.
- W2134236872 created "2016-06-24" @default.
- W2134236872 date "2003-05-20" @default.
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- W2134236872 title "Studies on the Analysis of Benzo(a)pyrene and Its Metabolites on Biological Samples by Using High Performance Liquid Chromatography/Fluorescence Detection and Gas Chromatography/Mass Spectrometry" @default.
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- W2134236872 doi "https://doi.org/10.5012/bkcs.2003.24.5.559" @default.
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