代谢
蓝鳃太阳鱼(Lepomis macrochirus)连续暴露于0.1微克/毫升的统一放射性标记(14)C-3-氯-p-甲苯胺盐酸盐(CPTH)28天,之后将鱼转移到流动的未处理水中进行28天的排毒期......在暴露于放射性标记化合物的第7天,蓝鳃鱼组织中的稳态浓度达到,可食用、不可食用和整体组织的平均浓度分别确定为2.9、12.0和7.5微克/克组织。三种组织的生物浓缩因子分别计算为33倍、150倍和88倍。大约64%的积累的放射性标记CPTH和代谢物在排毒第28天从鱼体中消除。发现放射性分布在不同组织群体中是相似的。已确认一种代谢物为N-乙酰-3-氯-p-甲苯胺,另外两种代谢物被推测为4-乙酰胺基-2-氯苯甲酸和4-氨基-2-氯苯甲酸。N-乙酰化分解产物以前在哺乳动物和鸟类中都有报道;因此,鱼类中CPTH的代谢可能与其他物种中观察到的相似。/3-氯-p-甲苯胺盐酸盐/
Bluegill sunfish (Lepomis macrochirus) were continuously exposed to 0.1 ug/mL of uniformly radiolabeled (14)C-3-chloro-p-toluidine hydrochloride (CPTH) for 28 days, after which the fish were transferred to flowing untreated water for a 28-day depuration period ... The steady-state concentrations in the bluegill tissues were reached by day 7 of exposure to the radiolabeled compound, with mean concentrations in the edible, nonedible, and whole-body tissues determined to be 2.9, 12.0, and 7.5 ug/g of tissue, respectively. Bioconcentration factors of 33x, 150x, and 88x were calculated for the three types of tissues. About 64% of the accumulated radiolabeled CPTH and metabolites were eliminated from the fish on day 28 of depuration. The distribution of radioactivity was found to be similar in all tissue groups. One metabolite was confirmed as N-acetyl-3-chloro-p-toluidine, with two metabolites suggested to be 4-acetamido-2-chlorobenzoic acid and 4-amino-2-chlorobenzoic acid. The N-acetylated breakdown product has been previously reported to occur in both mammals and birds; thus, the metabolism of CPTH in fish may parallel that observed in these other species. /3-Chloro-p-toluidine hydrochloride/
来源:Hazardous Substances Data Bank (HSDB)