代谢
金属磷化物被水解成磷化氢和相应的金属阳离子。在大鼠体内,未通过呼出气体排出的磷化氢被氧化,并以次磷酸盐和亚磷酸盐的形式出现在尿液中。还报道了一种通过纸色谱法检测到的、与焦磷酸和偏磷酸不同的未识别代谢物。由于磷化氢的氧化不完全,以及随着剂量的增加,以呼出气体形式排出的给药量的比例也增加,这表明氧化途径是缓慢的。/金属磷化物/
Metal phosphides are hydrolyzed to phosphine and the corresponding metal cation. In rats, phosphine that is not excreted in the expired air is oxidized and appears in the urine, chiefly as hypophosphite and phosphite. ...An unidentified metabolite, detectable by paper chromatography and distinct from pyrophosphate and metaphosphate /was also reported/. The fact that (a) phosphine is incompletely oxidized; and (b) the proportion of an administered dose that is eliminated as expired phosphine increases with the dose suggests that the oxidative pathway is slow. /Metal phosphides/
来源:Hazardous Substances Data Bank (HSDB)