摘要
提出了附着系数这一概念,即单位质量水果蔬菜上所能附着的最大药液体积。对12种水果和19种蔬菜中农药的附着系数进行测量计算。结果表明:水果、蔬菜的农药附着系数分别为0.0037～0.044mL/g和0.0045～0.22mL/g,附着系数越大,该品种的农残风险越大。以附着系数的大小划分了果蔬品种可能的农残风险等级,对于水果,附着系数小于0.01mL/g的风险相对较低,大于0.01mL/g的风险相对较高;对于蔬菜,附着系数小于0.1mL/g的风险较低,大于0.1mL/g风险较高。利用附着系数还可计算果蔬的农药残留量,为获得农药残留量提供了一种新的方法。
A new concept of adhesion coefficient is taken out to evaluate the pesticide residue in fruits and vegetables. Adhesion coefficient is defined as the maximum volume of pesticide liquid in per unit weight of different kinds of fruits and vegetables. The adhesion coefficients of 12 fruits and 19 vegetables are measured. The result shows the adhesion coefficients range from 0.0037 to 0.044 mL/g for fruits and from 0.0045 to 0.22 mL/g for vegetables. The bigger the adhesion coefficients is, the more risk of pesticide residue the fruits or vegetable is. The different risk level is settled. The fruits with the adhesion coefficient over 0.01 mL/g would relatively have the more risk of pesticide residue, and for vegetables the adhesion coefficient over 0.1 mL/g maybe relatively have the more risk. The initial residue concentration in fruits or vegetables is calculated and compared with the determined value. Calculation with adhesion coefficient provides a new way to estimate pesticide residue.
出处
《农药》
CAS
北大核心
2009年第1期31-33,共3页
Agrochemicals
基金
浙江省重大科技专项(2006C12023)
关键词
附着系数
农药
水果
蔬菜
adhesion coefficient
pesticide
fruit
vegetable
