Method for detecting VOC (Volatile Organic Compound) matters in toy paint

A detection method and paint technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve problems such as VOC substances that have not been seen, and achieve the effect of simple and fast method, guaranteed accuracy and satisfactory results

Active Publication Date: 2011-09-07
中山永恒检测科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, there is no relevant report on the detection and analysis of VOC substances in toy paints by using headspace sampling analysis method

Method used

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  • Method for detecting VOC (Volatile Organic Compound) matters in toy paint
  • Method for detecting VOC (Volatile Organic Compound) matters in toy paint
  • Method for detecting VOC (Volatile Organic Compound) matters in toy paint

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Embodiment 1 Test parameter optimization

[0066] The inventor found in the research process that when using headspace automatic sampling, the parameters that have the greatest influence on the quantitative results are A (the volume of the standard solution added to the headspace bottle), B (the weight of the sample added to the headspace bottle), and C (the standard volume of the standard solution added to the headspace bottle). Equilibrium temperature of standard solution and sample in headspace autosampler) and D (equilibrium time of standard solution and sample in headspace autosampler). Taguchi experiment was used to verify the above parameters. Four controls Each factor corresponds to three levels, as shown in Table 1:

[0067] Table 1 Control factors and their corresponding three levels

[0068] control factor

illustrate

Level 1

Lever2

Level 3

A

Standard volume

20 μL

50μL

2mL

B

Sample weight

0.05...

Embodiment 2

[0083] In this embodiment, automatic static headspace-capillary column gas chromatography is used, and four optimized parameters are obtained in combination with Embodiment 1 to detect VOC substances in toy paint.

[0084] The toy paint used for detection in this embodiment adopts toy paint PPS-100, toy paint AG-100 and toy paint SSA-100.

[0085] Instruments used: Japan Shimadzu company GC-2010Plus gas chromatograph (with liquid autosampler and FID detector), Italy DANI HSS86.50 headspace autosampler.

[0086] 1. Qualitative detection

[0087] step 1.

[0088] Standard solution preparation:

[0089] Using methanol as a solvent, mix the pure substances of all VOC substances commonly used or possibly used in toy paints and dissolve them in methanol to form a mixed standard working solution, and add the marker adipic acid di The ethyl ester was then put into a 20ml headspace bottle, and immediately sealed and compressed with a silicone rubber septum.

[0090] Sample preparat...

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Abstract

The invention discloses a method for detecting VOC (Volatile Organic Compound) matters in toy paint. The method comprises the following steps of: carrying out qualitative detection on the VOC matters in the toy paint by utilizing an automatic static headspace-capillary column gas chromatography method and combining condition parameters optimized by a taguchi methodology, and carrying out quantitative detection on the VOC matters in the toy paint according to the qualitative detection result, wherein the condition parameters optimized by the taguchi methodology are as follows: the volume of a reference liquid in a headspace bottle is 50 microliters, the weight of a sample in the headspace bottle is 0.05g, a balance temperature of the reference liquid and the sample in an automatic headspace sample injector is 90 DEG C, and the balance time of the reference liquid and the sample in the automatic headspace sample injector is 1 hour. When the method disclosed by the invention is used for detecting the VOC matters in the toy paint with complex ingredients, the toy paint does not need to be diluted, and the sample does not need to be injected manually, thus the full-automatic sample injection can be realized; the detection on the VOC matters including benzene, toluene, ethyl benzene or xylene and the like is finished by one experiment, the method is simple, convenient and fast, and the accuracy of results is high.

Description

technical field [0001] The invention relates to the field of paint detection, in particular to a method for detecting VOC substances in toy paint. Background technique [0002] With the gradual deepening of people's concept of environmental protection, the environmental indicators of children's toys have been improved again, especially the GB 24613-2009 (national standard) implemented on October 1, 2010, which eliminates heavy metals that are harmful to the human body and the environment in children's toy coatings. In addition to the requirements for solubility and phthalate content, it is also stipulated that the content of volatile compounds (VOC) with a boiling point lower than or equal to 250°C is ≤720g / L, the content of benzene is ≤0.3%, and the content of toluene, ethylbenzene and xylene The sum of the content ≤ 30%. [0003] VOC substances refer to the general term of volatile organic compounds whose melting point is lower than room temperature and boiling point is b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/68
Inventor 陈丽红朱文郭锦泉
Owner 中山永恒检测科技有限公司
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