High-sensitivity and high-precision analysis method suitable for detection of organic sulfur compounds in cigarette mainstream smoke

Abstract

The invention relates to a high-sensitivity and high-precision analysis method suitable for detection of organic sulfur compounds in cigarette mainstream smoke; the method adopts synthesized ionic liquid dispersion liquid-liquid micro-extraction of the organic sulfur compounds in the smoke, the volume of an extraction liquid is small, the extraction efficiency is high, and the sensitivity of the method is greatly improved; a sulfur-containing analysis protective agent is adopted; on the basis of an on-line gas generator, a target object is protected in real time, and the problems of peak shape trailing, inaccurate integration, poor signal response precision and the like caused by adsorption of a chromatographic system are remarkably solved. Compared with a traditional method, the method has the advantages that the consumption volume of the selected ionic liquid is small, the extraction efficiency is high, and the ionic liquid can be reused and is more economical, green and environment-friendly; the analysis protective agent is generated on line in real time, the protection range is wide, the defect that a conventional protective agent only protects part of target objects is overcome, the molecular weight of the protective agent is small, the protective agent cannot be deposited at a liner tube, a chromatographic column and an ion source, and the maintenance cost of a detection instrument is remarkably reduced.

Description

technical field [0001] The invention belongs to the field of chromatographic analysis, and in particular relates to an analysis method for detecting organic sulfur compounds in cigarette mainstream smoke. Background technique [0002] Organosulfur compounds are an important class of sulfur-containing chemical substances, which have an important impact on the characteristic flavor or odor of food. Sulfur-containing compounds have diverse structures, ranging from polar thiocyanate and thiol compounds to medium-polar furanthiol compounds and thiazole compounds, with a wide variety and low content. In addition, sulfur-containing compounds are chemically active, easy to oxidize, adsorb, and dimerize, and are easily affected by factors such as temperature and enzymes. Currently, the commonly used pretreatment steps are purification and concentration, which are easy to introduce artificial by-products. In addition, their analysis During the measurement, the peak shape of sulfide i...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above problems, the present invention provides a highly sensitive and high-precision analysis method suitable for the detection of organic sulfur compounds in mainstream cigarette smoke. The method uses a Cambridge filter to capture organic sulfur compounds in the particulate matter of mainstream cigarette smoke. , using ionic liquid dispersion liquid-liquid micro-extraction target, ionic liquid is used as the extraction liq

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