Method for the detection of n-propane bromide in leather and textiles

A technology of bromo-n-propane and detection method, which is applied in the detection field of bromo-n-propane, can solve the problems such as the lack of unified standards and methods for bromo-n-propane, and achieves the effect of simple, quick and high sensitivity of the detection method

Active Publication Date: 2014-10-22
GUANGZHOU GRG METROLOGY & TEST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the detection of brominated n-propane is limited to the detection of air and water, mainly headspace-gas chromatography, but there is no international unified standard and method for the detection of textiles and leather products.

Method used

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  • Method for the detection of n-propane bromide in leather and textiles
  • Method for the detection of n-propane bromide in leather and textiles
  • Method for the detection of n-propane bromide in leather and textiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A kind of detection method of n-propane bromide in leather, textile, adopts gas chromatography-mass spectrometry to detect, comprises the following steps:

[0041] A. Standard solution preparation

[0042] Preparation of brominated n-propane standard stock solution: Weigh a certain amount of brominated n-propane standard product, dilute it in a 50 mL volumetric flask with chromatographically pure methanol, and prepare a 1000 mg / L stock solution.

[0043] Preparation of brominated n-propane standard working solution: Accurately pipette an appropriate amount of standard stock solution, dilute it step by step with chromatographically pure methanol, and prepare 0.1mg / L, 0.5mg / L, 1mg / L, 2mg / L, 5mg / L, 10mg / L, 20mg / L, 50mg / L standard working solution.

[0044] B. Sample pretreatment

[0045] Sampling: Take a representative sample, cut it into a size of about 5mm×5mm, accurately weigh 1.0g (accurate to 0.0001g), and place it in a 60mL glass reaction bottle; add extraction age...

Embodiment 2

[0060] Example 2 See Table 1 for the retention time and characteristic fragment ions of the target substance (n-propane bromide) in the example.

[0061] Table 1 Retention time, characteristic fragment ions and abundance ratio of the target

[0062] Substance name

[0063] From Table 1 and figure 1 It can be seen that under the detection conditions of Example 1, the target object (n-propane bromide) can be well separated.

Embodiment 3

[0064] Embodiment 3 linear relationship

[0065] Under the optimized detection conditions of the present invention, the brominated n-propane standard solution is detected within the concentration range of 0.1-50 mg / L. Standard working curve see figure 2 ,Depend on figure 2 It can be seen that its concentration has a good linear relationship with the response value, the linear equation: Y=4741.42X+1050.904, the correlation coefficient R 2 =0.9995.

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Abstract

The invention discloses a method for detecting n-propyl bromide in leather and textiles. The method is characterized in that the gas chromatography-mass spectrometry combination is used for detection. The detection method is simple, convenient and fast and has high sensitivity. A sample to be detected is in the linear relationship in the range of 0.1-50mg / L, the correlation coefficient is 0.9995, the method detection limit is 0.1mg / L, the standard recovery rate is 96%-112%, and the relative standard deviation (RSD) (n is equal to 7) is less than 2%. The method can be used for detecting the n-propyl bromide in the leather and textiles very well.

Description

technical field [0001] The invention relates to the field of chemical detection, in particular to a detection method for n-propane bromide in leather and textiles. Background technique [0002] On December 17, 2012, the European Chemicals Agency (ECHA) officially confirmed 54 new SVHC candidate substances on its official website, and the number of SVHC candidate substances will increase to 138. [0003] 1-Bromopropane (1-Bromopropane), as the eighth batch of 54 new SVHC substances confirmed by REACH, also known as Propyl bromide (Propylbromide), is a colorless liquid, which is synthesized by hydrogen bromide and propanol through catalytic synthesis. At present, brominated n-propane is mainly used as a solvent for fats, paraffins, resins, etc.; as an intermediate for the manufacture of pharmaceuticals, insecticides, essences, seasonings, etc.; as a cleaning agent for precision electronic instruments; as a descaling agent and as a spray adhesive Solvents in solvents, etc. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/88G01N30/06
Inventor 李支薇王华王海鸣任祥祥
Owner GUANGZHOU GRG METROLOGY & TEST CO LTD
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