CAJ | 학술논문

采用高效液相色谱法对莠去津在沈阳市和新民市土壤中的消解动态进行了研究。结果表明：在添加浓度为0.05～0.5 mg/kg时，莠去津在土壤中的回收率为87.35%～120.12%，相对标准偏差为3.32%～7.03%，满足农药残留分析要求。莠去津在沈阳市和新民市土壤中的消解动态均符合一级降解动力学方程。莠去津在沈阳市土壤中的半衰期为15.61～16.27 d，在新民市土壤中的半衰期为14.65～15.34 d，两者消解速率相近。莠去津在土壤中的最终残留量为未检出，说明该农药为低残留、易消解农药。建议田间使用38%莠去津悬浮剂防治玉米田杂草时，有效成分用量不高于3377 g/hm2，于玉米播后苗前施药1次。
채용고효액상색보법대유거진재침양시화신민시토양중적소해동태진행료연구。결과표명：재첨가농도위0.05～0.5 mg/kg시，유거진재토양중적회수솔위87.35%～120.12%，상대표준편차위3.32%～7.03%，만족농약잔류분석요구。유거진재침양시화신민시토양중적소해동태균부합일급강해동역학방정。유거진재침양시토양중적반쇠기위15.61～16.27 d，재신민시토양중적반쇠기위14.65～15.34 d，량자소해속솔상근。유거진재토양중적최종잔류량위미검출，설명해농약위저잔류、역소해농약。건의전간사용38%유거진현부제방치옥미전잡초시，유효성분용량불고우3377 g/hm2，우옥미파후묘전시약1차。
A HPLC method was established for determining the residue and the degradation of atrazine in Shenyang and Xinmin. The results showed that the fortified recoveries of atrazine were 87.35%-120.12%at the spiking levels of 0.05-0.5 mg/kg with the relative standard deviations of 3.32%-7.03%. The method met the requirements of residue analysis. The degradation of atrazine in soil conformed to the first-order kinetic equation, and the half-lives of atrazine were 15.61-16.27 d and 14.65-15.34 d in Shenyang and Xinmin, respectively. The rates of degradation in soil in Shenyang and Xinmin were similar. The final residues of atrazine in soil were not detected. Atrazine 38%SC could be used to control weed in corn field with the maximum active ingredient dosages of 3 377 g/hm2.