Method for analyzing soluble organic pollutants in indoor air

A technology for organic pollutants and indoor air, which is applied in the fields of analyzing materials, material separation, and measuring devices. Control and sampling equipment requirements are low, and the analysis speed is fast.

Inactive Publication Date: 2010-09-08
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are relatively few types of adsorbents, the selection is limited to a certain extent, and the sampling time is long, so it is not suitable to collect samples at multiple points at the same time.

Method used

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  • Method for analyzing soluble organic pollutants in indoor air
  • Method for analyzing soluble organic pollutants in indoor air
  • Method for analyzing soluble organic pollutants in indoor air

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The present invention is used to sample and analyze the condensed water of a dehumidifier in a newly decorated room.

[0033] Close doors and windows for about 12 hours before sampling. Sampling was carried out under closed conditions. The Kawashima DH-820B dehumidifier (output power 430W, dehumidification capacity 20L / D, refrigerant injection volume: R22 / 250g) was selected for condensate collection. Before starting, record the temperature and humidity at that time. The sampling time is 5 hours. After sampling, record and collect the condensed water in the water tank for use. Take a 2ml water sample and use Shimadzu SHIMADZU TOC-5000A to measure the TOC concentration in the water sample.

[0034] Accurately measure two 300ml water samples with a graduated cylinder. The first part uses a C18 cartridge for solid phase extraction. Use 10ml of dichloromethane and 10ml of deionized water to flow through the small column at a rate of 2-5ml per minute to activate it, and...

Embodiment 2

[0037] The invention is used to sample and analyze the condensed water of an air conditioner in a certain chemical laboratory.

[0038] Close doors and windows for about 12 hours before sampling. Sampling was carried out under closed conditions. Haier KFRD-72LW / UA(F) vertical air conditioner (cooling power 2700W, cooling capacity 7200W) was selected for condensate collection. Before starting, record the temperature and humidity at that time. The sampling time is 5 hours. After sampling, record and collect the condensed water in the water tank for use. Take a 2ml water sample and use Shimadzu SHIMADZU TOC-5000A to measure the TOC concentration in the water sample.

[0039]Accurately measure two 300ml water samples with a graduated cylinder. The first part uses a C18 cartridge for solid phase extraction. Use 10ml of dichloromethane and 10ml of deionized water to flow through the small column at a rate of 2-5ml per minute to activate it, and the solution does not need to be...

Embodiment 3

[0042] The invention is used to sample and analyze the condensed water of an air conditioner in a certain computer room.

[0043] Close doors and windows for about 12 hours before sampling. Sampling was carried out under closed conditions. Haier KFRD-72LW / UA(F) vertical air conditioner (cooling power 2700W, cooling capacity 7200W) was selected for condensate collection. Before starting, record the temperature and humidity at that time. The sampling time is 5 hours. After sampling, record and collect the condensed water in the water tank for use. Take a 2ml water sample and use Shimadzu SHIMADZU TOC-5000A to measure the TOC concentration in the water sample.

[0044] Accurately measure two 300ml water samples with a graduated cylinder. The first part uses a C18 cartridge for solid phase extraction. Use 10ml of dichloromethane and 10ml of deionized water to flow through the small column at a rate of 2-5ml per minute to activate it, and the solution does not need to be drai...

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PUM

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Abstract

The invention relates to a method for analyzing soluble organic pollutants in indoor air, in particular to a method for analyzing varieties and contents of organic pollutants in condensation water by measuring and collecting condensation water in indoor air so as to reflect the quality of indoor air. Since the concentration of the organic pollutants in the collected condensation water is lower, a solid phase extraction technology is utilized to enrich the organic pollutants in water, so as to carry out qualitative and quantitative analysis by the aid of a gas chromatograph / velocitron and a high performance liquid chromatograph. The invention has the advantages of simple sampling method, high sample analysis speed, low cost for sample pretreatment, low detection limit and high sensitivity, and can qualitatively and quantitatively detect trace amounts of volatile organic pollutants and soluble organic substances in air. The analysis method is quick, sensitive and accurate, and is especially suitable for relatively closed environments, such as office buildings, engine rooms and the like.

Description

technical field [0001] The invention belongs to the comprehensive technical field of diagnosis of trace water-soluble organic pollutants in indoor air, and in particular relates to an analysis method for easily soluble organic pollutants in indoor air. [0002] The invention adopts the method of measuring indoor air condensation water quality to reflect the indoor air quality. Specifically, water samples are collected through air-conditioning refrigeration or dehumidifier condensation, solid phase extraction technology enriches easily soluble pollutants, gas phase mass spectrometry and high performance liquid chromatography and other technologies, to achieve the enrichment of water-soluble organic pollutants in indoor air Assemble and analyze assays. . Background technique [0003] Human survival is inseparable from air. A person breathes an average of 22,000 times a day and inhales about 12,000 liters of air. About 80% of the time in a person's life is spent indoors, so ...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/08
Inventor 陈玲周磊梁钪邬言段艳萍孟祥周
Owner TONGJI UNIV
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