Freitag D, Scheunert I
Gesellschaft für Strahlen- und Umweltforschung mbH München, Federal Republic of Germany.
Ecotoxicol Environ Saf. 1990 Dec;20(3):256-68. doi: 10.1016/0147-6513(90)90005-p.
[phenyl-14C]Monolinuron was applied (2.5 and 1.9 kg/ha) to the soil surface of an outdoor lysimeter in two successive years: then, potatoes were grown. Total recovery of 14C in soil, plants, and leached water was about 55% (of 14C applied) after the first growing period and about 43% after the second growing period. Radioactivity in soil contained 77.1% (based on total 14C recovered in soil) bound residues, 15% monolinuron, and the following conversion products: N-(4-hydroxyphenyl)-N'-methoxy-N'-methylurea, N-(4-chlorophenyl)-N'-methylurea. N-(4-chlorophenyl)methylcarbamate, N-(4-chlorophenyl)-N-methyl-methylcarbamate, and 4-chloroformanilide. The leachate contained 0.8% (based on total 14C recovered in leachate) N-(4-hydroxyphenyl)-N'-methoxy-N'-methylurea. Potato plants contained 0.106 mg/kg radioactive residues in peeled tubers after one growing period and 15.94 mg/kg in the tops; after two growing periods, peeled tubers contained 0.091 mg/kg and tops contained 18.87 mg/kg radioactive residues. These residues consisted of bound 14C (57.9% of total 14C recovered in plants), N-(4-hydroxyphenyl)-N'-methoxy-N'-methylurea, N-(4-chlorophenyl)-N'-methylurea, N-(4-chlorophenyl)methylcarbamate, N-(4-chlorophenyl)-N-methyl-methylcarbamate, and 4,4'-dichlorozobenzene.
连续两年将[苯-¹⁴C]绿麦隆以2.5千克/公顷和1.9千克/公顷的用量施用于室外渗漏计的土壤表面，然后种植马铃薯。在第一个生长季结束后，土壤、植物和淋溶水中¹⁴C的总回收率约为（施用¹⁴C的）55%，第二个生长季结束后约为43%。土壤中的放射性物质含有77.1%（基于土壤中回收的¹⁴C总量）的结合残留、15%的绿麦隆以及以下转化产物：N-(4-羟基苯基)-N'-甲氧基-N'-甲基脲、N-(4-氯苯基)-N'-甲基脲、N-(4-氯苯基)甲基氨基甲酸酯、N-(4-氯苯基)-N-甲基-甲基氨基甲酸酯和4-氯甲酰苯胺。渗滤液中含有0.8%（基于渗滤液中回收的¹⁴C总量）的N-(4-羟基苯基)-N'-甲氧基-N'-甲基脲。在一个生长季之后，马铃薯植株的去皮块茎中含有0.106毫克/千克放射性残留，顶部含有15.94毫克/千克；在两个生长季之后，去皮块茎中含有0.091毫克/千克，顶部含有18.87毫克/千克放射性残留。这些残留由结合¹⁴C（占植物中回收的¹⁴C总量的57.9%）、N-(4-羟基苯基)-N'-甲氧基-N'-甲基脲、N-(4-氯苯基)-N'-甲基脲、N-(4-氯苯基)甲基氨基甲酸酯、N-(4-氯苯基)-N-甲基-甲基氨基甲酸酯和4,4'-二氯苯组成。
