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Method for simultaneously detecting various toxic and harmful substances in consumer goods

A technology for hazardous substances and consumer products, which is applied in the field of detection of toxic and hazardous substances, and can solve problems such as lack of detection methods and large interference in the detection of isomers of toxic and hazardous substances.

Active Publication Date: 2020-10-23
INSPECTION & QUARANTINE TECH CENT SHANDONG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the problems existing in the current detection methods of toxic and harmful substances, such as incomplete detection targets, lack of detection methods, no multi-category simultaneous detection technology, and large interference in the detection of toxic and harmful substance isomers, the purpose of the present invention is to provide a detection target A method for simultaneous detection of multiple toxic and harmful substances in consumer products with wide variety, simple pre-treatment, good separation effect, accurate qualitative and quantitative, and strong anti-interference ability
The GCxGC method has the characteristics of large peak capacity (the peak capacity is the product of the peak capacity of two tandem chromatographic columns), strong separation ability, and high resolution. The problem of simultaneous detection covers most types of toxic and harmful substances at present, and realizes the complete separation between different isomers

Method used

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  • Method for simultaneously detecting various toxic and harmful substances in consumer goods
  • Method for simultaneously detecting various toxic and harmful substances in consumer goods
  • Method for simultaneously detecting various toxic and harmful substances in consumer goods

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Experimental program
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Embodiment 1

[0024] (1) Qualitative detection of toxic and harmful substances:

[0025] (1.1) Take 50 kinds of toxic and harmful substances (see Table 1) standard solutions, mix them evenly and accurately prepare a series of mixed standard solutions with different mass concentrations, and use mass spectrometry to measure the mixed standard solutions with different mass concentrations respectively, and get respectively The mass chromatographic peaks corresponding to the mixed standard solutions of various concentrations; the mass spectrometry conditions are: electron bombardment source (EI source), ionization voltage 70eV, acquisition frequency: 100spectra / s, detection voltage: 1700V, ion source temperature: 230°C; scan mode : full scan mode; acquisition mass range: 50-450amu; characteristic ion quantitative analysis, solvent delay 600 seconds.

[0026] Table 1 Names, molecular formulas, CAS numbers, qualifier ions and quantifier ions of various types of toxic and hazardous substances

[0...

Embodiment 2

[0046] Embodiment 2: Actual sample determination

[0047] This method was used to test 40 commercially available samples. As a result, PAEs were detected in 4 samples, which were made of PVC, PS, and ABS; PAHs were detected in 3 samples, made of PP and PVC. The samples selected in this research include food contact materials, toys, daily consumer goods and industrial plastics. Among the tested samples, the positive detection rate of PVC and ABS materials is relatively high, but the content is not high, and it does not exceed the limit of the REACH regulation. There may be two reasons for the detection: one is that the raw materials used are of poor quality, and the processed raw materials contain restricted additives; the other is that there are hydrogen bonds between PVC molecules, which have a high melting point and poor plasticity. The plasticizer reduces the intermolecular force of PVC and improves the processing performance; the third is that the excessive content of poly...

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Abstract

The invention discloses a method for simultaneously detecting various toxic and harmful substances in consumer goods. The method comprises the following steps: preparing a series of standard solutions, detecting the standard solutions by using a comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometer to obtain retention time and ion fragment information, and generating astandard curve corresponding to a concentration and a response value; taking a sample for pretreatment to obtain an on-machine detection sample, and detecting the on-machine detection sample by usingthe comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometer under the same condition to obtain retention time and a response value; and comparing the sample retention time and the response value with a standard curve, and calculating to determine the content of toxic and harmful substances in the sample. The method has the characteristics of simple pretreatment, strong separation capability, good separation effect, accurate qualitative and quantitative analysis, strong anti-interference capability, high resolution and the like, is suitable for analysis and research ofa complex system, and solves the problem of simultaneous detection of multiple toxic and harmful substance components.

Description

technical field [0001] The invention relates to a detection method of toxic and harmful substances, in particular to a comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry detection method of toxic and harmful substances in daily consumer goods. Background technique [0002] Polycyclic aromatic hydrocarbons (Polycyclic aromatic hydrocarbons, PAHs), phthalate plasticizers (Phthalates, PAEs), alkylphenols (Alkyl phenols, APs), benzotriazole ultraviolet stabilizers (Benzotriazole ultraviolet stabilizers , UVs), karanal [2-(2,4-dimethylcyclohex-3-ene-1-yl)-5-methyl-5-(1-methylpropyl)-1,3-dioxane,karanal] and phosphate tris( 2-Chloroethyl) ester [Tris (2-chloroethyl) phosphate, TCEP], as a common additive in industrial production, is widely used directly or indirectly in the production of daily consumer goods such as anti-corrosion, coatings, textile printing and dyeing, and plastic processing. , It has been detected and reported in textiles, cosmeti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/12G01N30/30G01N30/46
CPCG01N30/02G01N30/06G01N30/12G01N30/30G01N30/463G01N2030/062G01N2030/047G01N2030/126G01N2030/3046G01N2030/3076
Inventor 薛秋红周龙龙刘一龙尹桂林罗忻叶曦雯牛增元马强
Owner INSPECTION & QUARANTINE TECH CENT SHANDONG ENTRY EXIT INSPECTION & QUARANTINE BUREAU