Abstract: 【Objective】To investigate the pesticide residues in intensively planted spinach,as well as the risk associated with dietary exposure of pesticide residues in spinach.【Methods】Pesticide residues were measured in 80 spinach samples intensively planted in Ulanqab,Inner Mongolia. The chronic and acute dietary exposure risk assessment model was used to assess the dietary exposure risk of pesticide residues in the spinach. The pesticide risk ranking was done using the British Veterinary Drug Residue Committee′s veterinary drug residue risk ranking matrix to assess the health risk caused by pesticide residues.【Results】Pesticide residues from 16 different pesticides were found in spinach samples,mostly insecticides and low hazardous pesticides. The content was 0.002 0 to 1.280 0 mg/kg,the detection rate was 2.5% to 30.0%,and the over standard rate was 2.5%. The likelihood of chronic and acute dietary exposure to the insecticide Fluoronitrile exceeding the standard was less than 100%,posing neither long-term or short-term damage to human health. Pesticide residues with a risk value of less than 30 were classified as low-risk pesticide residues.【Conclusion】Pesticide residues were safe in spinach intensive production,and the danger of dietary exposure to pesticide residues was low. However Fluoronitrile was a potential risk factor,oversight of banned pesticides should be strengthened.

Key words: Spinach, Pesticide residue, Dietary exposure, Risk assessment