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• W2141366500 abstract "A sensitive and specific method has been developed for the quantitative analysis of phencyclidine (PCP) in pigmented and nonpigmented rat hair. After the addition of PCP-d5 as the internal standard, hair samples (10 mg) were digested overnight in 1N NaOH at 30 degrees C. Digested solutions were then extracted using a solid-phase procedure with Bond Elut CertifyTM extraction columns. Reconstituted extracts were analyzed on a Finnigan ion trap (MagnumTM) mass spectrometer in the electron ionization mode using helium as the carrier gas, and a DB-5 MS (30 m x 0.25-mm i.d.; 25-microns film thickness) capillary column. The assay is linear from 0.1 to 50 ng/mg with a correlation coefficient of > 0.99 and is capable of detecting 25 pg of PCP on column. The accuracy of this assay was estimated using fortified hair standards at PCP concentrations of 0.5 and 10 ng/mg. Intra-assay coefficients of variation were determined to be less than 6% at 0.5, 2, and 10 ng/mg. Interassay coefficients of variation were determined to be less than 15% at 0.5, 2, and 10 ng/mg. The method has been used to evaluate PCP incorporation into Long-Evans rat hair but could also be used to evaluate the incorporation of PCP into human hair. Male rats were shaved prior to dosing such that both pigmented and nonpigmented hair was collected. Animals were administered 12 mg/kg PCP by intraperitoneal injection daily for five days. Fourteen days after the first dose, pigmented and nonpigmented hair were collected and analyzed for PCP. The mean plus or minus the standard error of the mean (n = 5) concentrations of PCP in pigmented and nonpigmented hair were 14.33 +/- 1.43 ng/mg of hair and 0.47 +/- 0.04 ng/mg of hair, respectively. This method is also being used to evaluate PCP as a model xenobiotic for studies of the incorporation of xenobiotics into hair." @default.
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• W2141366500 date "1996-10-01" @default.
• W2141366500 modified "2023-09-27" @default.
• W2141366500 title "Quantitative Determination of Phencyclidine in Pigmented and Nonpigmented Hair by Ion-Trap Mass Spectrometry" @default.
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• W2141366500 doi "https://doi.org/10.1093/jat/20.6.350" @default.
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