Method for analyzing phenolic compounds in water

Abstract

The invention discloses a method for analyzing phenolic compounds in water, used for qualitatively or quantitatively analyzing the phenolic compounds in a water sample. The method comprises the following steps of 1, producing a standard curve; 2, preparing sample liquid to be detected: preprocessing a surface water sample to be detected to acquire the sample liquid to be detected; 3, detecting andanalyzing the sample liquid to be detected by using gas chromatography-low energy electron ionization quadrupole time-of-flight mass spectrometry (GC-le EI-QTOF); and 4, reviewing the sample that isdetected to be positive, namely that includes the phenolic compounds, by using gas chromatography-triple quadrupole mass spectrometry (GC-QQQ). The method provided by the invention is high in resolution, high in sensitivity, and capable of accurately determining the nature of a target, and excluding interferent of which a mass-to-charge ratio is close to that of the target.

Description

technical field [0001] The invention belongs to the field of environmental analysis, and relates to a gas chromatography series low-energy electric bombardment ionization quadrupole time-of-flight mass spectrometry analysis method for phenolic compounds in surface water samples, and furthermore, a functionalized magnetic field based on β-cyclodextrin Magnetic solid-phase extraction of liposomes combined with gas chromatography tandem high-resolution mass spectrometry for the qualitative or quantitative analysis of phenolic compounds in surface water samples. Background technique [0002] Phenols and chlorophenols are used in many fields, such as machinery manufacturing, petrochemicals, wood fiber, medicine and pesticides, etc., and are widely used in the environment due to their extensive use. Phenolic substances are toxic to human body, water body and crops. Low concentrations of phenols can denature proteins, while high concentrations of phenols can precipitate proteins. ...

AI Technical Summary

Problems solved by technology

[0005] At present, gas chromatography-mass spectrometry (GC-MS) is often used for the qualitative and quantitative determination of phenolic compounds. The mass spectrometer detector has a good search and qualitative function. The problem of large matrix interference and inaccurate characterization can be avoided by using a quadrupole time-of-flight mass spectrometer (QTOF). The time-of-flight mass spectrometer (TOF) has high resolution and fast scanning speed. High-resolution mass determination of target ions in primary and multiple-stage mass spectrometry can be achieved

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