Tea, pesticide wastewater, vegetables and fruits, Ganoderma lucidum, sewage, tobacco, Pu'er tea, honey, Chinese medicinal herbs Chaihu, honeysuckle, dried goji berries, Huangqi, soil, milk, jam, yogurt, drinking water, etc

　　Organic phosphorus detection items:

　　dichlorvos, trichlorfon, dimethoate, methyl parathion, and parathion.

　　Organic phosphorus detection standards:

　　GB/T 5009.145-2003 Determination of multiple residues of organic phosphorus and carbamate pesticides in plant-based foods

　　GB/T 5009.161-2003 Determination of multi-component residues of organic phosphorus pesticides in animal based foods

　　GB/T 5009.199-2003 Rapid detection of organic phosphorus and carbamate pesticide residues in vegetables

　　GB/T 5009.207-2008 50 types of organic phosphorus pesticide residues in brown rice Determination of Quantity

　　GB/T 7492-1987 Water Quality - Determination of Hexachlorocyclohexane and DDT - Gas Chromatography