Method for measuring pesticide residue quantity in leather

Abstract

The invention relates to a combined gas chromatography mass spectrometry measuring method for measuring the pesticide residue in leather, which belongs to the field of analytical chemistry. The method adopts normal hexane and acetonitrile to perform ultrasonic extraction to a leather sample and separates and purifies the sample extracting solution by various means such as liquid-liquid extraction, gel permeation chromatograph, adsorbent chromatography column, solidoid extraction column, and the like by aiming to the characteristics that the leather sample has high oil content, the residual processing assistant is complex, and the like, and the pesticide residue of the processed sample extracting solution is measured by the combined gas chromatography mass spectrometry. The invention has the advantages of high selectivity, wide range of application and low detectability, realizes the measurement of the pesticide residue in the leather, creates a new thought for the measurement of the pesticide residue in the leather and fills in a gap for the measurement of the pesticide residue.

Description

technical field

[0001] The invention belongs to the field of analytical chemistry, and relates to a method for measuring pesticide residues in leather by gas chromatography-mass spectrometry. It specifically involves ultrasonically extracting leather samples through n-hexane and acetonitrile, using liquid-liquid extraction, gel permeation chromatography (GPC), adsorbent chromatography column, solid phase extraction column (SPE column) to separate and purify pesticides in the sample extract, and gas chromatography - Determination of its content by mass spectrometry. Background technique

[0002] Pesticides are widely used in agricultural production and industrial production. While playing their role in killing insects and bacteria, pesticides have also become one of the important pollutants. Pesticide residues in food and daily necessities invade the human body through digestive tract, respiratory tract and skin contact, thus causing damage to people's health. Different pes...