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des-fe3o4 composite for rapid extraction of residual plant growth regulators in edible vegetable oil

Chinese Chemical Letters 2019年第6期30卷 1182-1185页

作者： Ting Tan Xiaomei Xu Yiqun Wan State Key Laboratory of Food Science and Technology Nanchang University Nanchang 330047 China Center of Analysis and Testing Nanchang University Nanchang 330031 China School of Chemistry Nanchang University Nanchang 330031 China

A rapid des-fe3o4 microextraction coupled with liquid chromatography method was ingeniously developed for simultaneous control of five typical plant growth regulators in a planting cycle including indole-3-acetic acid, abscisic acid, thidiazuron, 1-naphthylacetic acid and forchlorfenuron. The experiments were carried out with one type of carboxylic acid-assisted deep eutectic solvent (nChCl:nacetic acid=1:3) as extractant, coupled with ultrasonic wave extraction for 30 min at bath temperature at 50 ℃. Under the optimum conditions, good extraction performances of linearities for five plant growth regulators were achieved separately in the range of 0.10–50 mg/L of indole-3-acetic acid, 0.06–50 mg/L of abscisic acid, 0.20–50 mg/L of thidiazuron, 0.50–50 mg/L of 1-naphthylacetic acid and 0.06–50 mg/L of forchlorfenuron and recoveries were ranged from 70.4%to 102.2%. Meanwhile, fe3o4 was preferentially combined with des in the oil matrix, the advantage of which was pointed to rapid and efficient separation of targeted plant growth regulators from complicated oil matrix. The proposed approach achieved satisfied results and met the monitoring requirements of plant growth regulators control in edible vegetable oil samples.

关键词： des-fe3o4 composite Deep eutectic solvent Rapid separation Plant growth regulators Edible vegetable oil

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