一、農用殺蟲劑殘留多久失效

農(nong)(nong)藥(yao)殺蟲劑(ji)(ji)是(shi)毒性(xing)較大的(de)農(nong)(nong)藥(yao)，使用(yong)后通常會有(you)一定(ding)的(de)農(nong)(nong)藥(yao)殘留(liu)，殘留(liu)期一般(ban)需(xu)要(yao)根據(ju)殺蟲劑(ji)(ji)品種和(he)(he)性(xing)狀而定(ding)，一般(ban)來講，乳油、懸浮劑(ji)(ji)等用(yong)于(yu)直(zhi)接噴灑的(de)劑(ji)(ji)型對(dui)農(nong)(nong)作物的(de)污染(ran)相(xiang)對(dui)要(yao)大一些，而粉劑(ji)(ji)由于(yu)其(qi)容易(yi)飄散而對(dui)環(huan)境和(he)(he)施藥(yao)者的(de)危害更大，下(xia)面是(shi)幾種常用(yong)農(nong)(nong)藥(yao)殺蟲劑(ji)(ji)的(de)殘留(liu)期：

10%氯氰菊酯(zhi)乳油(you)(you)殘(can)(can)留(liu)(liu)(liu)期(qi)(qi)(qi)為(wei)(wei)(wei)2-5天(tian)(tian)(tian)(tian)(tian)；2.5%溴氯菊酯(zhi)殘(can)(can)留(liu)(liu)(liu)期(qi)(qi)(qi)為(wei)(wei)(wei)2天(tian)(tian)(tian)(tian)(tian)；5%抗(kang)蚜威可(ke)濕(shi)性(xing)粉劑殘(can)(can)留(liu)(liu)(liu)期(qi)(qi)(qi)為(wei)(wei)(wei)6天(tian)(tian)(tian)(tian)(tian)；1.8%愛福廠乳油(you)(you)殘(can)(can)留(liu)(liu)(liu)期(qi)(qi)(qi)為(wei)(wei)(wei)7天(tian)(tian)(tian)(tian)(tian)；40.7%樂斯本乳油(you)(you)殘(can)(can)留(liu)(liu)(liu)期(qi)(qi)(qi)為(wei)(wei)(wei)7天(tian)(tian)(tian)(tian)(tian)；20%滅掃利乳油(you)(you)殘(can)(can)留(liu)(liu)(liu)期(qi)(qi)(qi)為(wei)(wei)(wei)3天(tian)(tian)(tian)(tian)(tian)；20%氰戊菊酯(zhi)乳油(you)(you)殘(can)(can)留(liu)(liu)(liu)期(qi)(qi)(qi)為(wei)(wei)(wei)5天(tian)(tian)(tian)(tian)(tian)；35%優殺硫磷殘(can)(can)留(liu)(liu)(liu)期(qi)(qi)(qi)為(wei)(wei)(wei)7天(tian)(tian)(tian)(tian)(tian)；20%甲氰菊酯(zhi)乳油(you)(you)殘(can)(can)留(liu)(liu)(liu)期(qi)(qi)(qi)為(wei)(wei)(wei)3天(tian)(tian)(tian)(tian)(tian)；10%馬(ma)撲立克乳油(you)(you)殘(can)(can)留(liu)(liu)(liu)期(qi)(qi)(qi)為(wei)(wei)(wei)7天(tian)(tian)(tian)(tian)(tian)；25%喹硫磷乳油(you)(you)殘(can)(can)留(liu)(liu)(liu)期(qi)(qi)(qi)為(wei)(wei)(wei)9天(tian)(tian)(tian)(tian)(tian)；50%抗(kang)蚜威可(ke)濕(shi)性(xing)粉劑殘(can)(can)留(liu)(liu)(liu)期(qi)(qi)(qi)為(wei)(wei)(wei)6天(tian)(tian)(tian)(tian)(tian)；5%多來(lai)寶(bao)可(ke)濕(shi)性(xing)粉劑殘(can)(can)留(liu)(liu)(liu)期(qi)(qi)(qi)為(wei)(wei)(wei)7天(tian)(tian)(tian)(tian)(tian)。

溫馨提示：以上是正常使用情(qing)況(kuang)下(xia)的殘留期，如果遇到(dao)下(xia)雨的話，大概殘留1-2小時就(jiu)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(nong)(nong)業生產中為了(le)減少蟲害，會(hui)使用農(nong)(nong)藥殺蟲劑，然后(hou)農(nong)(nong)藥殺蟲劑噴施(shi)后(hou)會(hui)有(you)一(yi)定的(de)殘留，如(ru)果擔心的(de)話，可以采(cai)取以下(xia)方法(fa)進行處(chu)理：

1、堿水浸泡法

先將蔬菜(cai)水(shui)果表面(mian)沖(chong)洗(xi)干凈，在堿水(shui)中浸(jin)泡(pao)5～10分鐘，然后用清(qing)水(shui)沖(chong)洗(xi)2～3遍。

2、臭氧洗脫法

用市(shi)售(shou)的臭氧發生(sheng)器清洗和浸泡(pao)各類瓜果蔬菜，清洗和浸泡(pao)時(shi)間為(wei)10～20分(fen)鐘，可清除大部分(fen)農藥殘留。

3、儲存法

部分(fen)農藥可隨時間(jian)(jian)流(liu)逝緩慢地分(fen)解為對人體無害(hai)的(de)物質，因此對易于(yu)保存(cun)的(de)瓜果(guo)蔬(shu)菜可通過一定時間(jian)(jian)的(de)存(cun)放而(er)減(jian)少農藥殘留量(liang)。此法(fa)適用于(yu)蘋果(guo)、冬瓜等不易腐爛(lan)的(de)水果(guo)蔬(shu)菜。這類水果(guo)蔬(shu)菜一般存(cun)放15天以上，即可去除大(da)部分(fen)農藥殘留。

4、加熱法

氨基甲酸酯(zhi)類(lei)殺蟲劑會(hui)隨溫(wen)度(du)升高而(er)加快分解，因此可(ke)通過加熱(re)去除部分農藥殘留(liu)。此法可(ke)用(yong)于芹菜(cai)、菠菜(cai)、小白菜(cai)、圓白菜(cai)、青椒、菜(cai)花、豆角等。先(xian)用(yong)清水(shui)將蔬菜(cai)表面(mian)洗凈，再放入沸(fei)水(shui)中焯2～5分鐘，再用(yong)清水(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(mai)有機(ji)食品(pin)。有機(ji)農產品(pin)檢(jian)測到的殺蟲劑含量遠低于(yu)常(chang)規種植的食品(pin)。

2、徹底清洗果蔬(shu)。把水(shui)果或蔬(shu)菜(cai)放在流動的水(shui)下面沖洗，能(neng)比浸(jin)泡更(geng)有效地去除殘余農藥。