腈菌唑在辣椒上的残留检测方法研究

Study on the Determination of Myclobutanil Residues on Pepper(Capsicum annuum)

[目的]研究农药腈菌唑在辣椒(Capsicum annuum)上残留的提取及检测方法,并对其在辣椒作物上的施用作了安全性评价。[方法]采用气相色谱法进行测定。[结果]辣椒中腈菌唑添加浓度为0.01～1.00 mg/kg时,平均回收率为94.3%～98.8%,相对标准偏差为2.1%～5.4%;建立的检测方法的标准曲线的回归方程为y=16 298x+348.92,R2=0.999 4,按照剂量60 g/hm2施药60 d后,在采集的辣椒样品中腈菌唑残留量小于0.01 mg/kg。[结论]腈菌唑按照该研究中的试验剂量在辣椒上施用是安全的。

[Objective] The extraction and determination method of Myclobutanil on pepper（Capsicum annuum） was studied,and the using method of the pesticide on Capsicum annuum was assessed.[Method] The GC method was used to determine.[Result] The results showed that the mean recovery was 94.3%-98.8% and the relative standard deviation was 2.1%-5.4% when the addition concentration was 0.01-1.00 mg/kg.The regression equation of standard curve was Y=16 298X＋348.92,R2=0.999 4.On the dose of 60 g/hm2,the amount of Myclobutanil residues was lower than 0.01-1.00 mg/kg on the Capsicum annuum sample.[Conclusion] The pesticide is safe to Capsicum annuum with studied dose.