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Updated: Jul 10, 2025
Characterization and Application of Passive Samplers for Monitoring of Pesticides in Water
Published on: August 3, 2016
A convenient and effective method for determining organophosphorus pesticides in citrus fruits based on a novel
Jiexue Zhao1, Xuejin Mao2, Qingqing Zhang1
1State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China; College of Food Science, Nanchang University, Nanchang 330047, China.
Abstract:
This work presents a novel, convenient and effective method for assaying organophosphorus pesticides (OPPs) in the pulp and peel of citrus fruits. In this method, shaped UiO-66/alginate (UiO-66/Alg) beads were employed to replace the powder sorbents used in traditional dispersive solid phase extraction (d-SPE) methods. The UiO-66/Alg beads can be easily separated by only using a tweezer within 1 min, which effectively simplifies the sample pretreatment and overcomes the shortages brought by the incomplete separation of powder sorbents. Moreover, the matrix compounds can be effectively excluded by UiO-66/Alg beads, and the UiO-66/Alg beads can be reused at least 8 times. The d-SPE conditions were optimized by a single factor test. The method shows satisfactory sensitivity, accuracy and precision. Furthermore, ATR-FTIR and UV-Vis-DRS were employed to investigate the adsorption mechanism. Finally, the developed method was applied to monitor the OPPs in ten different citrus fruits.
