自从70年代末多氯联苯生产的禁令颁布以来许多种群鱼类体内的pcb的浓度有所下降但是pcb仍然是潜在问题因为它是亲脂性物质并被证实有生物富积 Template




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tomski自从70年代末多氯联苯生产的禁令颁布以来许多种群鱼类体内的pcb的浓度有所下降但是pcb仍然是潜在问题因为它是亲脂性物质并被证实有生物富积 coloring