代谢
钯可能通过口服、皮肤接触和吸入暴露而被吸收。一旦进入人体,它会分布到肾脏、肝脏、脾脏、淋巴结、肾上腺、肺和骨骼中。钯的络合能力使其能够与氨基酸、蛋白质、DNA以及其他大分子结合。钯及其代谢物通过尿液和粪便排出。摄入一定量的硝酸盐和亚硝酸盐是人类氮循环的正常部分。在适当的条件下,硝酸盐可以在胃肠系统中转化为亚硝酸盐,显著增强硝酸盐的毒性。硝酸盐的主要代谢途径是转化为亚硝酸盐,然后转化为氨。亚硝酸盐、硝酸盐及其代谢物通过尿液排出。(L1137, A21)
Palladium may be absorbed through oral, dermal, and inhalation exposure. Once in the body it distributes to the kidney, liver, spleen, lymph nodes, adrenal gland, lung and bone. Palladium's ability to form complexes allows it the bind to amino acids, proteins, DNA, and other macromolecules. Palladium and its metabolites are excreted in the urine and faeces. Intake of some amount of nitrates and nitrites is a normal part of the nitrogen cycle in humans. In vivo conversion of nitrates to nitrites can occur in the gastrointestional tract under the right conditions, significantly enhancing nitrates' toxic potency. The major metabolic pathway for nitrate is conversion to nitrite, and then to ammonia. Nitrites, nitrates, and their metabolites are excreted in the urine. (L1137, A21)
来源:Toxin and Toxin Target Database (T3DB)