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Method for testing glycidol in air and waste gas

A technology of glycidol and exhaust gas, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of unspecified workplace exposure limit and detection method, high detection limit, and poor separation effect of complex samples. Achieve good separation effect, good recovery rate, simple and fast analysis method

Active Publication Date: 2015-07-29
浙江中一检测研究院股份有限公司
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AI Technical Summary

Problems solved by technology

However, at present, my country's occupational health standards have not given the corresponding exposure limits and detection methods in the workplace.
The National Institute of Occupational Safety and Health of the United States provides a detection method for glycidol (NIOSH Method 1608), but this method uses tetrahydrofuran as a solvent with strong toxicity, and uses a packed chromatographic column, and the temperature control method of the chromatographic column is constant temperature , the separation effect on complex samples is poor, and the detection limit is high

Method used

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  • Method for testing glycidol in air and waste gas
  • Method for testing glycidol in air and waste gas

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Experimental program
Comparison scheme
Effect test

Embodiment

[0018] Embodiment, the mensuration of glycidol in the air of certain production workshop

[0019] Step 1: Collect glycidol in the air. At the sampling point, install the activated carbon tube on the gas sampler, and collect air samples for 30 minutes at a flow rate of 1L / min;

[0020] Step 2: add ethanol solution of sodium hydroxide to the collected glycidol for analysis, and the analysis time is 20 minutes;

[0021] Step 3: Determining with a gas chromatograph. Qualitative by retention time, quantitative determination by external standard peak area method. Among them, the chromatographic conditions are set: chromatographic column PEG-20M (30m×0.25mm×0.33μm), using the temperature program method (the initial temperature of the column temperature is 100°C, keep for 3min, grow to 240°C at a speed of 20°C / min, keep for 1min ), the inlet temperature was 250°C, and the detector temperature was 250°C.

[0022] Sample analysis result: get 6 parts of samples and measure the conten...

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Abstract

The invention relates to a method for testing glycidol in air and waste gas. According to the method, the glycidol in the air and the waste gas is tested through solvent desorption-gas phase chromatography; a low-toxicity strong-base alcoholic solution is used as desorption solvents for sample processing, and green and environment-friendly effects are achieved; an analysis method is simple, convenient and fast; the quantitation result is accurate; the recovery rate is high; the detection limit reaches 0.04mg / m<3>. The method fills the technical blank of the glycidol in the air and the waste gas, and the basis can be provided for the profession health and environment protection.

Description

technical field [0001] The invention relates to a method for measuring glycidol in air and waste gas, in particular to a method for measuring glycidol in air and waste gas by solvent desorption-gas chromatography. Background technique [0002] Glycidol (Glycidol, C 3 h 6 o 2 ), also known as glycidol, its molecule contains two functional groups of epoxy group and hydroxyl group, it can be used as an intermediate in the synthesis of surfactants, plastics, resins, paints, etc. Refrigeration system desiccant, natural oil, vinyl polymer, demulsifier, dye layering agent and stabilizer of halogenated hydrocarbons, also widely used in the extraction and separation of various solvents. Glycidol belongs to category 2A substances in the IARC (2000) classification of the International Cancer Research Center. Animal experiments have proved that it has carcinogenic effects, and it may have the same effect on humans. Through skin absorption and breathing inhalation, etc., it can cause...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 何莲李怀瑞朱燮豪胡黎俏王雪彭钊朱慧花
Owner 浙江中一检测研究院股份有限公司
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