Han J C
J Toxicol Environ Health. 1979 Sep;5(5):957-63. doi: 10.1080/15287397909529804.
The active ingredient in du Pont Krenite brush control agent is ammonium ethyl carbamoylphosphonate (fosamine ammonium salt, formerly known as DPX-1108). Residues in channel catfish exposed to 1.1 ppm 14C-carbonyl-labeled fosamine ammonium in water for 4 wk were found to plateau in 2-3 wk with an accumulation factor (ratio of residue in fish to residue in water) of less than 1. In a separate experiment channel catfish were placed for 4 wk in a tank containing [14C]fosamine ammonium-treated soil (15 ppm) that had been aged for 30 d prior to flooding and initiation of fish exposure. The residue levels in this latter group of catfish also plateaued in 2-3 wk with an accumulation factor of less than 1. In both experiments, after the 4-wk exposures, the fish were transferred to fresh water for 2-wk depuration periods, during which residue levels dropped 50--90%. No effects on the fish were observed during these experiments.
杜邦Krenite除草剂的活性成分是乙基氨基甲酰膦酸铵（福美铵盐，以前称为DPX - 1108）。在水中暴露于1.1 ppm 14C - 羰基标记的福美铵4周的斑点叉尾鮰体内的残留物，在2 - 3周内达到稳定水平，积累因子（鱼体内残留物与水中残留物的比率）小于1。在另一项实验中，将斑点叉尾鮰置于含有[14C]福美铵处理过的土壤（15 ppm）的水箱中4周，该土壤在淹水和开始让鱼接触之前已经陈化了30天。后一组鲶鱼体内的残留物水平在2 - 3周内也达到稳定，积累因子小于1。在这两项实验中，经过4周的接触后，将鱼转移到淡水中进行2周的净化期，在此期间残留物水平下降了50 - 90%。在这些实验中未观察到对鱼有任何影响。
