Abstract：
:In this paper, a high performance liquid chromatographic method with fluorescence detection (HPLC-FL) for the determination of fenfluramine (Fen) and norfenfluramine (Norf) in human hair as biomarker metabolites of N-nitrosofenfluramine (N-Fen) is described. Washed and cut hair segments were extracted by ultrasonication for 1h at room temperature in methanol. The extract was evaporated and applied for derivatization with the fluorescent reagent 4-(4,5-diphenyl-1H-imidazol-2-yl)benzoyl chloride (DIB-Cl). An HPLC-FL analysis was performed using an ODS column with mobile phase composition of acetonitrile and water (65:35, v/v) and monitored at 430 nm (excitation 325 nm). The method was sensitive with detection limits of 36 and 16 pg/mg hair for Fen and Norf, respectively. The linearity was assessed in the range 0.036-144 ng/mg for Fen and 0.016-127 ng/mg for Norf with correlation coefficients larger than 0.999. The method was successfully used for the segmental determination of Fen and Norf in hair samples obtained from hospitalized patients diagnosed with hepatotoxicity and suspected to ingest N-Fen. Both Fen and Norf could be detected in these patients' hair samples in the ranges 43-1389 pg/mg for Fen and 18-680 pg/mg for Norf and the results showed that the patients might ingest N-Fen for a period of not less than 5 months. As well, the method was applied for the determination of Fen and Norf in rats that possess pigmented and non-pigmented hair after an intraperitoneal administration of Fen. Both compounds were determined in black as well as in white hair.
journal_name
Forensic Sci Intjournal_title
Forensic science internationalauthors
Kaddoumi A,Wada M,Nakashima MN,Nakashima Kdoi
10.1016/j.forsciint.2004.03.018keywords:
subject
Has Abstractpub_date
2004-11-10 00:00:00pages
39-46issue
1eissn
0379-0738issn
1872-6283pii
S0379073804001823journal_volume
146pub_type
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