Mesoporous structured molecularly imprinted polymer with restricted access function for highly selective extraction of chlorpyrifos from soil.

Mesoporous structured molecularly imprinted polymer with restricted access function for highly selective extraction of chlorpyrifos from soil.

Liang, Ting;Chen, Ligang;Ma, Yan;
journal of chromatography a 2019 pp. 460453
226
liang2019mesoporousjournal

Abstract

Mesoporous structured molecularly imprinted polymers combined with restricted access materials (RAM-M-MIPs) were synthesized in this work, then RAM-M-MIPs were used as adsorbents in matrix solid phase dispersion (MSPD) to extract chlorpyrifos residues from soil. The RAM-M-MIPs with mesoporous structure increased adsorptive capacity and accelerated adsorption rate. At the same time, the RAM-M-MIPs with restricted access function showed good exclusion effect toward humic acid in the soil. In addition, the characteristics of RAM-M-MIPs were measured and the optimal experimental conditions of MSPD were explored. In MSPD, the extraction and clean-up procedures can be finished simultaneously, which saved the extraction time. The analyte eluted from soil was determined by LC-MS/MS. The recoveries were in the range of 93.5-106.1% and the relative standard deviations were in the range of 2.8-5.7% at the spiked soil levels of 0.10-10.00 ng g, the detection limit was 0.015 ng g. Based on these analytical validation results, the developed method can be a useful method to determine chlorpyrifos in soil.

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