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抗蚜威最小检知是为2.4×10~(-10)克,最小检知浓度为0.004ppm,而脱甲基抗蚜威分别为2.8×10~(-10)克和0.014ppm,回收率在77.10～82.00%,标准差3.7～7.2,变异系数3.9～7.9%。抗蚜威在甘兰上消失很快,半衰期为1～3天。施药后六天的残留量低于1ppm。抗蚜威的残留量随施药量的加大,施药次数的增加和间隔期的缩短而增加,但最大残留值也低于1ppm,参照联合国 FAO/WHO1982年推荐的 MRL 为1ppm,为此建议安全使用标准:50%抗蚜威可湿性粉(Pirimor50WP),施药量为25克/亩(ai)1000倍液喷雾,使用3次以内,最后一次施药距采收间隔期为6天。
The minimum detectable concentration of pirimicarb was 2.4 × 10 ~ (-10) g, the minimum detectable concentration was 0.004ppm, and the demethylase was 2.8 × 10 ~ (-10) g and 0.014ppm, respectively. The recovery In 77.10 ~ 82.00%, the standard deviation of 3.7 ~ 7.2, the coefficient of variation of 3.9 ~ 7.9%. Pirimicarb disappears quickly in cabbage, half-life of 1 to 3 days. Residues after 6 days of application are less than 1 ppm. The residues of pirimicarb increased with the increase of dosage, the increase of the dosage and the shortening of the interval, but the maximum residue value was less than 1ppm. For the reference MRL of the United Nations FAO / WHO 1982 was 1ppm Recommended safe use standard: 50% pirimor 50 WP, applied at a rate of 25 g / mu (ai) 1000 times spray, used within 3 times, the last application from the harvest interval of 6 days .