Method for detecting residual phthalic acid monoester compound in crop planting environment sample

Through the HPLC-MS/MS detection method, the problem of residual detection of monophthalate compounds in crop planting environmental samples was solved, and accurate quantitative analysis of 19 typical compounds in soil and crops was achieved, which improved the ability to assess agricultural environmental risks.

CN119715852AActive Publication Date: 2025-03-28BEIJING NORMAL UNIVERSITY
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Patent Information

Application Number
CN202411903334.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-23
Publication Date
2025-03-28
Estimated Expiration
2044-12-23

AI Technical Summary

Technical Problem

The prior art lacks effective detection methods for the residues of phthalate monoester compounds in crop planting environmental samples, making it difficult to accurately evaluate the ecological and health risks of plasticizers to agricultural planting systems.

Method used

HPLC-MS/MS detection method, including sample pretreatment, isotope internal standard addition, extraction liquid concentration and enrichment, was used for quantitative analysis by high-performance liquid chromatography tandem triple quadrupole mass spectrometer, and 19 typical phthalate monoester compounds were identified and quantified.

Benefits of technology

Accurate quantitative analysis of monophthalate compounds in soil and different types of crops is achieved, which improves the accuracy and sensitivity of detection and can more effectively evaluate the potential risks of plasticizers to the agricultural environment.

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Abstract

The invention provides a method for detecting phthalic acid ester compound residues in a crop planting environment sample, which comprises the following steps: (1) extraction: pretreating the sample from the crop planting environment, adding an isotope internal standard, and extracting by adopting an extracting solution; (2) concentrating and enriching: concentrating the extracting solution, and enriching a target compound through an SPE (Solid Phase Extraction) column; and (3) detection: detecting by adopting HPLC-MS / MS. The invention finds that phthalic acid esters are easily converted into phthalic acid monoester in an agricultural environment, provides an HPLC-MS / MS (High Performance Liquid Chromatography-Mass Spectrometry / Mass Spectrometry) analysis method and provides an HPLC-MS / MS spectrum of 19 typical phthalic acid monoester compounds, and verifies the spectrum of residual phthalic acid monoester compounds in soil and 5 vegetables. Compared with the direct detection of the phthalic acid ester, the detection of the phthalic acid monoester compound can more accurately evaluate the ecological risk and health risk of the plasticizer on the agricultural planting system.
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