Conjugated microporous polymer for solid-phase extraction of neonicotinoid insecticides from environmental water samples.

• CMP-1 was synthesized by Sonogashira-Hagihara cross-coupling. • CMP-1 exhibited a large surface area of 788 m2·g−1 and abundant micropore structures. • This SPE method was applied to quantify NEOs in groundwater, tap water, and surface water. • The material shows excellent accuracy and application in NEOs monitoring. Conjugated microporous polymers (CMPs) have unique characteristics and have been used in a range of fascinating applications in separation sciences. In this study, a CMP, designated as CMP-1, was synthesized via the Sonogashira-Hagihara coupling reaction using 1,3,5-triphenylbenzene and 1,4-dibromobenzene as building blocks. CMP-1 features a large surface area, abundant micropore structures, and excellent stability, making it a promising solid-phase extraction adsorbent for the efficient enrichment of neonicotinoid insecticides (NEOs). Under the optimized conditions, CMP-1 was combined with high-performance liquid chromatography and diode array detection to enable the detection of NEOs with a wide linear range (0.5–200 μg·L–1), a low detection limit (0.26–0.58 μg·L–1), and acceptable precision. The developed method was applied to determine spiked NEOs in three types of environmental water samples, with recoveries of 73.7%–112.0% and relative standard deviations of 0.6%–9.4%. [ABSTRACT FROM AUTHOR]