Department of Entomology, Kansas State University, Manhattan, Kansas.
Bull Environ Contam Toxicol. 1969 Mar;4(2):120-7. doi: 10.1007/BF01558425.
Activation and standardization studies have been conducted with high purity grades 950 and 923 silica gel to obtain an effective adsorbent for cleanup of pesticide residue extracts. Activation of silica gel at 130°C or 300°C for a 2-hr period was very satisfactory for separating pesticides from biological materials with high recovery of pesticides. No gain in the activity of the adsorbent resulted from prolonging heat treatment beyond the 2-hr period. It was also found that the activity of the silica gel was not affected by storing it in an air-tight container for as long as 60 days.
已对高纯 950 和 923 硅胶进行了活化和标准化研究，以获得一种有效的农药残留提取物净化用吸附剂。硅胶在 130°C 或 300°C 下活化 2 小时，非常有利于从生物材料中分离农药，且农药回收率很高。延长热处理时间超过 2 小时并不会增加吸附剂的活性。研究还发现，硅胶的活性在密封容器中储存长达 60 天也不会受到影响。
