MIL-125@ZIF-8 based solid phase microextraction coating for sensitive determination of organophosphate esters in aqueous environments

IF 5.3 2区化学 Q1 CHEMISTRY, ANALYTICAL

Microchimica Acta Pub Date : 2025-03-28 DOI:10.1007/s00604-025-07127-8

Xingru Hu, Jiahui Hou, Long Pang, Zhigao Feng, Junhao Liu, Haiyang Feng, Ying Kong, Chao Liu

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Abstract

A novel MOF-on-MOF heterostructure (MIL-125@ZIF-8) was synthesized and utilized as a coating material for solid-phase microextraction (SPME), which was subsequently coupled with gas chromatography (GC) for the sensitive determination of organophosphate esters (OPEs) in water samples. Compared to commercial fiber, the MIL-125@ZIF-8 coated fiber (MIL-125@ZIF-8-F) demonstrated superior extraction performance for medium-polar or non-polar compounds due to multiple interactions such as hydrophobic interaction, π-π stacking, and hydrogen bonding. The synergistic effect of MIL-125 and ZIF-8 endowed the MIL-125@ZIF-8-F with high efficiency and excellent stability under extreme conditions. Specifically, the developed MIL-125@ZIF-8-F could withstand 80 conditioning cycles without significant loss of extraction capacity. Moreover, the established method exhibited a wide linear range (10–1000 μg L⁻¹), low detection limits (0.03–0.20 μg L⁻¹), and excellent reproducibility under optimized condition. Finally, this proposed method provided a promising approach for the efficient enrichment of trace OPEs in actual environmental water samples.

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来源期刊

Microchimica Acta 化学-分析化学

CiteScore

9.80

自引率

5.30%

发文量

410

审稿时长

2.7 months

期刊介绍： As a peer-reviewed journal for analytical sciences and technologies on the micro- and nanoscale, Microchimica Acta has established itself as a premier forum for truly novel approaches in chemical and biochemical analysis. Coverage includes methods and devices that provide expedient solutions to the most contemporary demands in this area. Examples are point-of-care technologies, wearable (bio)sensors, in-vivo-monitoring, micro/nanomotors and materials based on synthetic biology as well as biomedical imaging and targeting.