Camper N D, Stralka K, Skipper H D
J Environ Sci Health B. 1980;15(5):457-73. doi: 10.1080/03601238009372196.
The degradation of profluralin [N-(cyclopropylmethyl)-alpha,alpha,alpha-trifluoro-2,6-dinitro-N-propyl-p-toluidine] and trifluralin (alpha,alpha,alpha-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine) was studied under aerobic and anaerobic soil conditions. Three soils (Goldsboro loamy sand, Cecil loamy sand, Drummer clay loam) were each treated with 1 ppmw herbicide; anaerobic conditions were maintained by flooding. Soil samples were extracted monthly and subjected to TLC analysis. No degradation was detected in sterile controls. Aerobic degradation of both herbicides was greatest in the Cecil loamy sand soil over the entire incubation period. Degradation of profluralin in Cecil soil under aerobic conditions was 86 percent after 4 months with three products detected; 83 percent of the trifluralin was degraded with two products detected. Anaerobic degradation accounted for 72 percent of the profluralin and 78 percent of the trifluralin after 4 months. Degradation of both herbicides increased with incubation time for the first 3 months and decreased slightly thereafter. Generally there was more extensive degradation (percent and in number of products formed) of profluralin than trifluralin under the conditions tested. More degradation products were detected for both herbicides under aerobic conditions than under anaerobic conditions.
在好氧和厌氧土壤条件下研究了氟乐灵[N-(环丙基甲基)-α,α,α-三氟-2,6-二硝基-N-丙基对甲苯胺]和三氟乐灵(α,α,α-三氟-2,6-二硝基-N,N-二丙基对甲苯胺)的降解情况。三种土壤（戈尔兹伯勒壤质砂土、塞西尔壤质砂土、鼓手黏壤土）分别用1 ppmw的除草剂进行处理；通过淹水维持厌氧条件。每月提取土壤样品并进行薄层色谱分析。在无菌对照中未检测到降解。在整个培养期内，两种除草剂在塞西尔壤质砂土中的好氧降解最为显著。在好氧条件下，塞西尔土壤中氟乐灵在4个月后的降解率为86%，检测到三种产物；三氟乐灵降解了83%，检测到两种产物。4个月后，厌氧降解分别占氟乐灵的72%和三氟乐灵的78%。在最初3个月内，两种除草剂的降解随培养时间增加，此后略有下降。在所测试的条件下，一般氟乐灵的降解（降解百分比和形成的产物数量）比三氟乐灵更广泛。与厌氧条件相比，在好氧条件下两种除草剂检测到的降解产物更多。
