代谢
斑点鳟鱼(红点鲑),被单独暴露于多环芳烃化合物(PACs),这些化合物包括苯并[a]芘、咔唑、屈艹、二苯并呋喃、二苯并噻吩、芴、菲和芘。暴露7天后,将鱼处死并取出胆囊进行胆汁分析。使用高压液相色谱(HPLC)结合荧光(F)和紫外(UV)检测来确定胆汁中PAC衍生物的存在,无需预处理。所有暴露中以葡萄糖苷酸结合物为主,不同化合物中的酚和起始物质的含量各不相同(0-53%)。通过选择性提取极性较小的非结合PACs和对水溶性物质进行酶水解来确认化合物的鉴定。随后通过HPLC和/或气相色谱-质谱(GCMS)对产生的酚进行特征分析。不同化合物的总代谢物水平差异很大。
Speckled trout, Salvelinus fontinalis, were orally exposed to individual polycyclic aromatic compounds (PACs) represented by benzo[a]pyrene, carbazole, chrysene, dibenzofuran, dibenzothiophene, fluorene, phenanthrene, and pyrene. Fish were sacrificed 7 days after exposure and the gall bladder removed for bile analysis. High pressure liquid chromatography (HPLC) with fluorescence (F) and ultraviolet (UV) detection was used to determine the presence of PAC derivatives in the bile without pretreatment. Glucuronide conjugates were predominant in all exposures with variable amounts (0-53%) of phenols and starting material. Identification of compounds was confirmed by selective extraction of less polar nonconjugated PACs and enzymatic hydrolysis of water-soluble material. This was followed by HPLC and/or gas chromatography-mass spectrometry (GCMS) characterization of the produced phenols. Total metabolite levels varied widely among compounds.
来源:Hazardous Substances Data Bank (HSDB)