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Detection method for medium short-chain chlorinated paraffin in plastic and environment

A technique of short-chain chlorinated paraffin and determination method, which is applied in the directions of measuring device, material separation, material analysis, etc., and achieves the effects of good repeatability, good linear relationship and simple operation.

Inactive Publication Date: 2013-10-16
深圳信测标准技术服务股份有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

SCCPs are believed to have carcinogenic potential despite indications of potential mechanisms that may trigger these tumors, which are not relevant to human health

Method used

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  • Detection method for medium short-chain chlorinated paraffin in plastic and environment
  • Detection method for medium short-chain chlorinated paraffin in plastic and environment
  • Detection method for medium short-chain chlorinated paraffin in plastic and environment

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Embodiment Construction

[0019] Some preferred embodiments of the present invention are listed below to help further understanding of the present invention, and the scope of protection of the present invention is not limited to these preferred embodiments.

[0020] This method is used to detect whether certain medium-chain and short-chain chlorinated paraffins are contained in plastics, soil and water.

[0021] principle

[0022] The samples were ultrasonically extracted with organic solvents, filtered, concentrated, and analyzed by GC. For soil samples with complex matrices, after extraction, they are purified by silica gel column before analysis.

[0023] (1) Instruments and equipment

[0024] 1 Analytical balance accurate to 0.1 mg

[0025] 2 Vacuum rotary evaporator

[0026] 3 Pipettes: 1mL, 5mL, 100 L

[0027] 4 volumetric flasks 1mL, 2mL, 10mL

[0028] 5 50mL stoppered glass test tubes

[0029] 6 Shakers

[0030] 7 Nitrogen blowing device

[0031] 8 ultrasonic cleaner

[0032] 9 Shimad...

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Abstract

The invention relates to detection of chemical substances, in particular to a detection method for medium short-chain chlorinated paraffin in plastic and the environment. The detection method comprises the following steps: getting a sample, after the sample is extracted ultrasonically with organic solvent, filtering and concentrating the sample, and then carrying out GC / ECD analysis on the sample. The detection method for medium short-chain chlorinated paraffin in plastic and the environment is used for detecting the medium short-chain chlorinated paraffin in plastic and the environment and has the advantages that the separation degree, linear relationship and repeatability are good, the quantitative accuracy is realized, the recovery ratio is higher than 80%, and the operation is simple.

Description

technical field [0001] The invention relates to the detection of chemical substances, in particular to a method for determining medium and short-chain chlorinated paraffins in plastics and environments. Background technique [0002] Short chain chlorinated paraffins (Short Chain Chlorinated Paraffins, SCPPs) are also called short chain chlorinated n-alkanes (PCAs), also known as chlorinated alkanes (alkanes, chlorinated), chlorinated alkanes (chlorinated alkanes), Chlorinated paraffins. Short-chain chlorinated paraffins are n-paraffins with a carbon chain length of 10 to 13 carbon atoms. The degree of chlorination is about 16% to 78% by weight. Its molecular formula is: CxH(2x-y+2)Cly, where x=10~13, y=1~13. The molecular weight is between 320 and 500. At room temperature, SCCPs are pale yellow or colorless viscous liquids with a vapor pressure of 2.8×10 -7 ~0.066Pa. Water-soluble K of SCCPs ow The value of Cl is 0.49~1260.00μg / L, and the number of Cl has a significant...

Claims

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Application Information

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IPC IPC(8): G01N30/88
Inventor 李生平覃小莉孙昊
Owner 深圳信测标准技术服务股份有限公司
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