新型农药助剂在大蒜及土壤中的残留

The Residue degradation of New Pesticide Adjuvant in Soil and Garlic

为研究新型助剂醇醚磷酸酯型助剂在环境中的残留降解性,通过对大蒜施用新型农药助剂和传统助剂配制农药进行应用试验,采用硫氰酸钴法和液相色谱法分别检测了采收后大蒜及其种植土壤中的乙氧基型表面活性剂和降解产物壬基酚的残留量。结果显示:施用3种新型农药助剂配制农药后的大蒜样品中乙氧基型表面活性剂的残留量分别为220.223、217.086、185.721 mg/kg,土壤样品的残留量分别为61.798、46.816、48.689 mg/kg,均低于施用传统助剂配制农药后的大蒜和土壤样品;使用传统助剂的土壤和大蒜样品中壬基酚的检出率高于新型绿色助剂。研究表明,新型农药助剂的降解性能及其对环境的安全性均优于传统助剂。

The aim of this paper is to study the degradation of new pesticide adjuvant in environment. The new and conventional pesticide adjuvant were used in garlic, and then the surfactant and nonylphenol residues in soil and garlic are detected by CTAS and HPLC, respectively. The results showed that after the new pesticide adjuvant is used in garlic, the surfactant residues in soil and garlic are 46.816-61.798 mg/kg and 185.721-220.223 mg/kg, respectively. The residues in soil sample is 61.798、 46.816、 48.689mg/kg, when the conventional pesticide adjuvant is used, the surfactant residues in soil and garlic are higher than which used alcohol ether phosphate adjuvant, the detection rate of nonylphenol in soil and garlic are higher than which used new pesticide adjuvant. Compared to the conventional pesticide adjuvants, the new pesticide adjuvant has a better degradation performance and no harm to the environmental.