Method for analyzing triazole pesticide residue in water

Abstract

The invention provides a novel method for analyzing the triazole pesticide residue in water based on bubbling-assisted demulsification-eutectic solvent aqueous two-phase system. According to the basicconcept of the invention, carbon dioxide bubbling-assisted demulsification is fully utilized, so that an emulsion can be quickly clarified without using additional centrifuging equipment; the eutectic solvent aqueous two-phase system has the advantages of environment friendliness, good biocompatibility, low cost, fast phase formation, high extracting efficiency and the like; based on the advantages of the two, the bubbling-assisted demulsification and the eutectic solvent aqueous two-phase system are combined, so that the demulsification effect is obvious and the operation is simple, safe andenvironmentally friendly; the method is applicable to enrichment of a relatively low-concentration compound in water as well as analytic determination based thereon.

Description

(1) Technical field

[0001] The invention relates to a method for analyzing residues of triazole pesticides in water, in particular to a method for analyzing residues of triazole pesticides in water based on a bubbling-assisted demulsification-deep eutectic solvent two-phase system. (2) Background technology

[0002] Liquid-liquid extraction technology is widely used in various pretreatment processes due to its simplicity of operation and equipment. In the traditional liquid-liquid extraction process, the extractant should be immiscible with the sample matrix (mostly water), so as to realize the separation between the two phases after the extraction is completed. Therefore, most of the selected extractants are hydrophobic organic solvents, and most of these solvents have High volatility and certain toxicity. In the extraction process, the use of a large amount of organic extractant may affect the health of operators and cause environmental pollution. Moreover, since the ext...

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