pesticide contamination
3.Furthermore, several ad hoc projects to study the extent of pesticide contamination in Chinese medicines were conducted.
4.The Committee is also examining the sampling methods required for testing for microbiological contamination, pesticide residues and aflatoxins, based on existing USDA BAM guidelines as well as CODEX procedures.
5.In the area of watershed between the Yangtze River and the Huaihe River, there are a series of ecological environmental issues, such as fragile forest ecosystem, frequent drought damage, lake of water resources, serious soil and water loss and contamination by chemical fertilizer, pesticide and plastic membrane.
