一、農用殺蟲劑殘留多久失效

農(nong)(nong)(nong)藥(yao)殺蟲劑(ji)是毒性(xing)(xing)較大的(de)農(nong)(nong)(nong)藥(yao)，使用后通常會有(you)一定的(de)農(nong)(nong)(nong)藥(yao)殘留，殘留期一般需(xu)要根據殺蟲劑(ji)品種和性(xing)(xing)狀而(er)定，一般來講，乳油(you)、懸浮(fu)劑(ji)等用于(yu)(yu)直接(jie)噴(pen)灑的(de)劑(ji)型(xing)對(dui)農(nong)(nong)(nong)作物的(de)污染相對(dui)要大一些，而(er)粉劑(ji)由于(yu)(yu)其(qi)容易飄散(san)而(er)對(dui)環境和施藥(yao)者的(de)危害更大，下面是幾種常用農(nong)(nong)(nong)藥(yao)殺蟲劑(ji)的(de)殘留期：

10%氯氰菊(ju)酯乳(ru)(ru)(ru)(ru)油殘(can)(can)(can)留(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)(wei)2-5天(tian)(tian)(tian)；2.5%溴氯菊(ju)酯殘(can)(can)(can)留(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)(wei)2天(tian)(tian)(tian)；5%抗蚜威(wei)可濕性粉(fen)劑殘(can)(can)(can)留(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)(wei)6天(tian)(tian)(tian)；1.8%愛福廠乳(ru)(ru)(ru)(ru)油殘(can)(can)(can)留(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)(wei)7天(tian)(tian)(tian)；40.7%樂斯本乳(ru)(ru)(ru)(ru)油殘(can)(can)(can)留(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)(wei)7天(tian)(tian)(tian)；20%滅掃利(li)乳(ru)(ru)(ru)(ru)油殘(can)(can)(can)留(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)(wei)3天(tian)(tian)(tian)；20%氰戊(wu)菊(ju)酯乳(ru)(ru)(ru)(ru)油殘(can)(can)(can)留(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)(wei)5天(tian)(tian)(tian)；35%優殺硫(liu)磷(lin)殘(can)(can)(can)留(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)(wei)7天(tian)(tian)(tian)；20%甲氰菊(ju)酯乳(ru)(ru)(ru)(ru)油殘(can)(can)(can)留(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)(wei)3天(tian)(tian)(tian)；10%馬(ma)撲立克(ke)乳(ru)(ru)(ru)(ru)油殘(can)(can)(can)留(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)(wei)7天(tian)(tian)(tian)；25%喹硫(liu)磷(lin)乳(ru)(ru)(ru)(ru)油殘(can)(can)(can)留(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)(wei)9天(tian)(tian)(tian)；50%抗蚜威(wei)可濕性粉(fen)劑殘(can)(can)(can)留(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)(wei)6天(tian)(tian)(tian)；5%多來寶(bao)可濕性粉(fen)劑殘(can)(can)(can)留(liu)(liu)期(qi)為(wei)(wei)(wei)(wei)(wei)7天(tian)(tian)(tian)。

溫馨提示：以上是正常使用情況下的殘留(liu)期，如(ru)果遇到下雨的話(hua)，大概殘留(liu)1-2小時就會失(shi)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(ye)生產(chan)中為了減少(shao)蟲(chong)害(hai)，會使(shi)用(yong)農藥殺(sha)蟲(chong)劑(ji)，然后(hou)(hou)農藥殺(sha)蟲(chong)劑(ji)噴施后(hou)(hou)會有一(yi)定(ding)的(de)殘留，如果(guo)擔心的(de)話，可以采(cai)取以下(xia)方(fang)法進行(xing)處理：

1、堿水浸泡法

先將(jiang)蔬菜(cai)水(shui)果表(biao)面沖洗干凈，在堿(jian)水(shui)中浸泡5～10分鐘，然后用清水(shui)沖洗2～3遍。

2、臭氧洗脫法

用市(shi)售的臭氧發生器清洗和(he)浸(jin)泡各(ge)類瓜果蔬(shu)菜，清洗和(he)浸(jin)泡時間為(wei)10～20分(fen)鐘(zhong)，可(ke)清除(chu)大部(bu)分(fen)農藥殘留。

3、儲存法

部分(fen)農藥可隨時間(jian)流逝緩慢地分(fen)解(jie)為對(dui)人體無(wu)害(hai)的物(wu)質，因此對(dui)易于保(bao)存(cun)的瓜果蔬菜可通過一(yi)定時間(jian)的存(cun)放(fang)而減(jian)少農藥殘留量。此法適用于蘋果、冬瓜等不(bu)易腐爛的水果蔬菜。這類水果蔬菜一(yi)般(ban)存(cun)放(fang)15天以上，即可去除大(da)部分(fen)農藥殘留。

4、加熱法

氨(an)基甲酸酯類殺蟲(chong)劑會隨(sui)溫度升高而加快分解，因此(ci)可(ke)通過加熱去除部分農藥殘留。此(ci)法可(ke)用(yong)于芹菜(cai)(cai)(cai)、菠菜(cai)(cai)(cai)、小白菜(cai)(cai)(cai)、圓白菜(cai)(cai)(cai)、青椒、菜(cai)(cai)(cai)花(hua)、豆角(jiao)等。先(xian)用(yong)清(qing)水(shui)將蔬菜(cai)(cai)(cai)表(biao)面洗凈，再(zai)放入沸水(shui)中(zhong)焯(zhuo)2～5分鐘，再(zai)用(yong)清(qing)水(shui)沖洗1～2遍即可(ke)。

三、怎么預防農用殺蟲劑殘留危害

1、多買有(you)機(ji)食(shi)品。有(you)機(ji)農產品檢測(ce)到的(de)殺蟲(chong)劑含量遠低(di)于(yu)常(chang)規種(zhong)植(zhi)的(de)食(shi)品。

2、徹底清(qing)洗果(guo)蔬。把水果(guo)或蔬菜放在流(liu)動的水下面(mian)沖洗，能比(bi)浸(jin)泡更有效地去(qu)除殘(can)余農藥。