【摘要】 采用顶空气相色谱（ＧＬＣ－ＨＳ）分析技术测定了代森锰锌、ＮＤ－９０１中代森锰锌在大棚黄瓜上的残留动态。喷施７０％代森锰锌可湿性粉剂的５００倍、２５０倍药液，测出黄瓜上原始沉积量分别为０．８８～２．７０ｍｇ／ｋｇ、１．１１～３．７９ｍｇ／ｋｇ；半衰期为１．６～９．５天、２．３～１０．９天。黄瓜叶片上原始沉积量分别为１４８．０１～１６４．０８ｍｇ／ｋｇ、２４６．２６～２５４．５１ｍｇ／ｋ；半衰期为１５．８～１６．２、１８．４天。ＮＤ－９０１中代森锰锌的残留量均低于单剂。另外，自来水去污处理可有效地减少瓜上代森锰锌的残留量，平均去污率８７％。更多还原

【Abstract】 The residual dynamics of mancozeb and mancozeb in ND-901 in plastic house cucumbers by a headspace chromatography were presented.When 0.2% and 0.4% mancozeb 70 WP were applied in a plastic house,the mancozeb residues on cucumber were 0.88-2.70mg/kg and 1.11～3.79mg/kg:on the leaves were 148.01～164.08mg/kg and 246.26～254.51mg/kg on hour 1 respectively.The half-lifes of mancozeb were 1.6～9.5 and 2.3～10.9 days On the fruits;15.8～16.2 and 18.4 days on the leaves respectively.Mancozeb in ND-901 residue was lower than its individual.The cucumbers were washed to reduce mancozeb residues effectively by tap water,the average decontamination was 87%.更多还原