Method for measuring hydrogenated terphenyl

Abstract

The invention discloses a method for measuring hydrogenated terphenyl, comprising the steps of: performing sampling; performing pre-treatment and detecting the content of the hydrogenated terphenyl ina target object subjected to the pre-treatment, wherein the pre-treatment comprises the steps of: mixing a sample with a first extracting agent to form a first mixing liquid, and performing ultrasonic treatment at a first designated temperature for a first preset time; mixing the first mixing liquid with a second extracting agent to form a second mixing liquid, and performing ultrasonic treatmentat a second designated temperature for a second preset time. The method of the invention has the beneficial effects that: multiple reagents are reduced, thus the method is environment friendly and healthy for human body; a detection limit is low, operation is simple and promotion performance is strong; a test instrument can be obtained easily, a GC-MS (Gaschromatographic-Mass Spectrometry) analyzer is used, and the GC-MS analyzer is high in sensitivity and good in anti-interference capability.

Description

technical field [0001] The invention relates to the detection field, in particular to a method for determining hydrogenated terphenyls. Background technique [0002] Terphenyl hydrogenated (abbreviation: TPHG, CAS No.: 61788-32-7) is a broad-spectrum, high-efficiency, low-cost industrial additive, which has excellent thermal stability, oxidation resistance and low vapor pressure The high-temperature heat transfer oil is widely used in petrochemical, plastic rubber, leather textile, wood processing, paper printing and other fields, and acts as a heat source for high-temperature heating production processes. At present, the annual output of hydrogenated terphenyls in Europe is about 1,000-10,000 metric tons; with the development of my country's industrial technology and the improvement of production levels, the output of hydrogenated terphenyls is also increasing year by year. [0003] However, in April 2018, the European Union issued an announcement announcing that hydrogena...

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Problems solved by technology

[0003] However, in April 2018, the European Union announced that hydrogenated terphenyl was included in the list of substances of very high concern (SVHC), because although there is no direct Reports of causing damage to animal or human health, but considering its excellent stability, it may accumulate in organisms for a long time, posing a potential threat to the environment and human health

Due to the previous evaluation of the toxicity of hydrogenated terphenyl and its wide use in production and life, there is currently a lack of analysis and detection methods for its added content

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