一、農用殺蟲劑殘留多久失效

農(nong)藥(yao)殺(sha)蟲(chong)劑是(shi)毒性較大的(de)(de)農(nong)藥(yao)，使(shi)用后通常會有(you)一(yi)定的(de)(de)農(nong)藥(yao)殘留，殘留期(qi)一(yi)般需要根據殺(sha)蟲(chong)劑品種和性狀而(er)定，一(yi)般來(lai)講，乳油、懸浮劑等用于直接噴灑的(de)(de)劑型對(dui)農(nong)作物的(de)(de)污染相對(dui)要大一(yi)些，而(er)粉劑由于其容易飄散而(er)對(dui)環境(jing)和施藥(yao)者的(de)(de)危害更大，下面是(shi)幾種常用農(nong)藥(yao)殺(sha)蟲(chong)劑的(de)(de)殘留期(qi)：

10%氯(lv)氰菊(ju)酯(zhi)(zhi)乳(ru)(ru)(ru)油殘(can)(can)(can)(can)(can)留(liu)(liu)期(qi)(qi)為(wei)(wei)(wei)2-5天(tian)(tian)(tian)；2.5%溴(xiu)氯(lv)菊(ju)酯(zhi)(zhi)殘(can)(can)(can)(can)(can)留(liu)(liu)期(qi)(qi)為(wei)(wei)(wei)2天(tian)(tian)(tian)；5%抗(kang)蚜威可濕性粉(fen)劑殘(can)(can)(can)(can)(can)留(liu)(liu)期(qi)(qi)為(wei)(wei)(wei)6天(tian)(tian)(tian)；1.8%愛福廠乳(ru)(ru)(ru)油殘(can)(can)(can)(can)(can)留(liu)(liu)期(qi)(qi)為(wei)(wei)(wei)7天(tian)(tian)(tian)；40.7%樂斯(si)本乳(ru)(ru)(ru)油殘(can)(can)(can)(can)(can)留(liu)(liu)期(qi)(qi)為(wei)(wei)(wei)7天(tian)(tian)(tian)；20%滅掃利(li)乳(ru)(ru)(ru)油殘(can)(can)(can)(can)(can)留(liu)(liu)期(qi)(qi)為(wei)(wei)(wei)3天(tian)(tian)(tian)；20%氰戊菊(ju)酯(zhi)(zhi)乳(ru)(ru)(ru)油殘(can)(can)(can)(can)(can)留(liu)(liu)期(qi)(qi)為(wei)(wei)(wei)5天(tian)(tian)(tian)；35%優殺硫磷殘(can)(can)(can)(can)(can)留(liu)(liu)期(qi)(qi)為(wei)(wei)(wei)7天(tian)(tian)(tian)；20%甲氰菊(ju)酯(zhi)(zhi)乳(ru)(ru)(ru)油殘(can)(can)(can)(can)(can)留(liu)(liu)期(qi)(qi)為(wei)(wei)(wei)3天(tian)(tian)(tian)；10%馬(ma)撲立(li)克乳(ru)(ru)(ru)油殘(can)(can)(can)(can)(can)留(liu)(liu)期(qi)(qi)為(wei)(wei)(wei)7天(tian)(tian)(tian)；25%喹硫磷乳(ru)(ru)(ru)油殘(can)(can)(can)(can)(can)留(liu)(liu)期(qi)(qi)為(wei)(wei)(wei)9天(tian)(tian)(tian)；50%抗(kang)蚜威可濕性粉(fen)劑殘(can)(can)(can)(can)(can)留(liu)(liu)期(qi)(qi)為(wei)(wei)(wei)6天(tian)(tian)(tian)；5%多來寶可濕性粉(fen)劑殘(can)(can)(can)(can)(can)留(liu)(liu)期(qi)(qi)為(wei)(wei)(wei)7天(tian)(tian)(tian)。

溫馨提示：以(yi)上是(shi)正常使用(yong)情況下(xia)的(de)殘留期(qi)，如果遇到下(xia)雨的(de)話，大(da)概殘留1-2小時就會失效。

該圖片由注冊用戶"荊湖酒徒"提供，版權聲明反饋

二、如何去除農藥殺蟲劑的殘留

農業生(sheng)產中為了減少蟲(chong)(chong)害，會使用(yong)農藥殺蟲(chong)(chong)劑(ji)，然(ran)后農藥殺蟲(chong)(chong)劑(ji)噴施后會有一定(ding)的(de)(de)殘留，如果擔心的(de)(de)話(hua)，可以采取以下方法進行處理(li)：

1、堿水浸泡法

先(xian)將蔬菜水果表面沖(chong)洗干凈，在堿水中浸泡(pao)5～10分(fen)鐘(zhong)，然后用清水沖(chong)洗2～3遍(bian)。

2、臭氧洗脫法

用市售的臭氧發生(sheng)器清(qing)洗(xi)和浸(jin)泡各(ge)類瓜果(guo)蔬菜，清(qing)洗(xi)和浸(jin)泡時間(jian)為10～20分(fen)(fen)鐘，可清(qing)除大部分(fen)(fen)農藥(yao)殘留。

3、儲存法

部分(fen)(fen)農(nong)(nong)藥(yao)可(ke)(ke)隨時(shi)間(jian)流逝緩慢地分(fen)(fen)解為對(dui)人體無害的(de)物(wu)質，因此對(dui)易(yi)于保(bao)存(cun)的(de)瓜果蔬菜(cai)可(ke)(ke)通過一定時(shi)間(jian)的(de)存(cun)放而減少農(nong)(nong)藥(yao)殘留量。此法適(shi)用于蘋(pin)果、冬瓜等不易(yi)腐爛的(de)水果蔬菜(cai)。這類(lei)水果蔬菜(cai)一般(ban)存(cun)放15天以(yi)上，即可(ke)(ke)去(qu)除大(da)部分(fen)(fen)農(nong)(nong)藥(yao)殘留。

4、加熱法

氨基甲酸(suan)酯(zhi)類殺(sha)蟲劑會隨溫(wen)度升高(gao)而加快分(fen)(fen)解，因此可(ke)通過加熱去除(chu)部分(fen)(fen)農(nong)藥殘留。此法可(ke)用(yong)于芹菜、菠菜、小(xiao)白(bai)菜、圓(yuan)白(bai)菜、青椒、菜花(hua)、豆(dou)角等。先用(yong)清水將蔬菜表面洗凈，再放入沸(fei)水中焯2～5分(fen)(fen)鐘，再用(yong)清水沖(chong)洗1～2遍即可(ke)。

三、怎么預防農用殺蟲劑殘留危害

1、多買(mai)有機食品(pin)。有機農(nong)產品(pin)檢測到的(de)殺(sha)蟲劑含(han)量遠低(di)于常(chang)規種植的(de)食品(pin)。

2、徹(che)底(di)清洗(xi)(xi)果蔬。把水果或蔬菜放在流動的水下面沖洗(xi)(xi)，能(neng)比(bi)浸泡更有效地去(qu)除(chu)殘余農藥。