Risk monitoring and assessment of plant growth regulators residues in fruits from Shandong Province, P. R. China
Keywords:
fruit; plant growth regulators; residues; risk assessmentAbstract
The residue and risk level of plant growth regulator in main producing areas of Shandong were clarified. From 2017 to 2018, 260 samples of cherry, grape, pear, jujube, blueberry and watermelon were collected from Shandong. 20 plant growth regulators were analyzed using liquid chromatography tandem mass spectrometry. Chronic dietary intake risk of plant growth regulators in fruits was evaluated by % Acute Reference Dose (% ARfD). A total of four plant growth regulators including abscisic acid (ABA), compound sodium nitrophenolate (CSN), indole-3-acetic acid (IAA) and chlormequat chloride (CCC) were detected, and the maximum residual amount were 2.49, 1.60, 0.038 and 0.048 mg/kg, respectively. Risk assessment results showed that the acute dietary intake risk (% ARfD) of detected plant growth regulators was 0.2 to 14.5. The acute dietary risk of plant growth regulator in fruit was low.
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