A low-cost, efficient and selective detection method of acaricide residues: Adsorption study

Acaricide residues (ARs) have high toxicity and pose a significant chronic dietary risk to humans. In this work, a low-cost and efficient selective detection method for ARs was developed. Meanwhile, to reduce the matrix effects of samples, a novel and fast pretreatment technology called magnetic solid phase extraction is used. After the optimization and validation of the method, the method’s limit of detection and quantitation were calculated as 0.5–0.9 and 1.7–3.1 μg L −1 , respectively. Additionally, the adsorption experiment between sorbents and ARs was thoroughly investigated in terms of adsorption behavior, mechanism, and selectivity. Finally, two environmental water samples were selected to verify the feasibility of the proposed method. The relative recovery ranged from 87 % to 116 % with a relative standard deviation ranging from 0.27 % to 9.41 %. These results demonstrated that the proposed method was low-cost and efficient and had the ability to selectively detect multiple ARs.