Method for synchronously detecting plurality of organophosphorus fire retardants in bottom mud

Abstract

The invention discloses a method for synchronously detecting a plurality of organophosphorus fire retardants in bottom mud, belonging to the detection field of trace amount of organophosphorus fire retardants in the environment. The method comprises the main steps of firstly, extracting a target object in a sample through an accelerated solvent extraction instrument; purifying by a gel permeation chromatography; further purifying and enriching by adopting a solid-phase small extraction column; and finally, concentrating and making up to the constant volume and detecting and quantifying by using a gas chromatograph-mass spectrometer. According to the invention, a pre-treatment method for the organophosphorus fire retardants in the bottom mud is established and optimized, the automation degree is high and the repeatability is good; the gas chromatograph-mass spectrometer is used for carrying out quantitative detection, the detection limit is low and the sensitivity is high; the detection limit to nine types of the organophosphorus fire retardants are lower than 0.340 microgram per gram. According to the method, the synchronous analysis and detection on the plurality of trace amount of organophosphorus fire retardants in a complicated environment medium, namely the bottom mud, is realized; the sensitivity and the accuracy are achieved, and the method makes up the disadvantages of the technology in the field.

Description

technical field

[0001] The invention relates to a method for detecting trace organic phosphorus flame retardants in the environment, more specifically, relates to a method for synchronous detection of multiple organic phosphorus flame retardants in bottom mud. Background technique

[0002] Organic Phosphate Flame Retardants (OPFRs) have long-lasting flame retardant effects, good compatibility with polymer substrates, water resistance, heat resistance and migration resistance, and are widely used in electronics, textiles, chemicals, building materials and other industries middle. The widespread use of organophosphorus flame retardants will also have certain impacts on humans and the ecological environment. Some organophosphorus flame retardants are very stable and bioaccumulative, and long-term contact with them will have adverse effects on the human body, such as immune system function degradation, reproductive system disorders, thyroid insufficiency, and even some organoph...

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