Application of solvent floatation to separation and determination of triazine herbicides in honey by high-performance liquid chromatography

Abstract

Based on the foaming property of the honey, a rapid, simple, and effective method solvent floatation (SF) was developed and firstly applied to the extraction and separation of triazine herbicides in honey. The analytes were determined by high-performance liquid chromatography. Some parameters affecting the extraction efficiencies, such as the type and volume of extraction solvent, type of salt, amount of (NH)SO, pH value of sample solution, gas flow rate, and floatation time, were investigated and optimized. The limits of detection for analytes are in the range of 0.16-0.56 μg kg. The recoveries and relative standard deviations for determining triazines in five real honey samples are in the range of 78.2-112.9 and 0.2-9.2%, respectively.

Optimization of Method for Pesticide Detection in Honey by Using Liquid and Gas Chromatography Coupled with Mass Spectrometric Detection

“…The extraction procedure is a crucial step for detecting pesticides, and it can be challenging for a complicated matrix such as honey. Extraction procedures that have been developed for honey samples include solvent extraction, supercritical fluid extraction, solid-phase extraction, matrix solid-phase dispersion, solid-phase microextraction, stir bar sorptive extraction [ 36 ], purge and trap, dispersive liquid–liquid microextraction, microextraction by packed sorbent, single-drop microextraction, magnetic solid-phase extraction [ 37 ], and solvent floatation [ 38 ]. In the present method, the QuEChERS method was optimized for the extraction and cleanup of honey samples from the original method [ 22 ] with modifications for honey [ 28 , 33 ] and bee pollen samples [ 32 ].…”

Simultaneous determination of five organophosphorus pesticide residues in different food samples by solid‐phase microextraction fibers coupled with high‐performance liquid chromatography

“…Among these OPPs, quinalphos, triazophos, parathion, fenthion and chlorpyrifos‐methyl are the five most commonly used . Usually, the methods for the determination of the OPPs in food include gas chromatography (GC), high‐performance liquid chromatography (HPLC) and capillary electrophoresis . These methods can rapidly and accurately detect the OPPs.…”