CN105116070A - Determination method for content of benzene in indoor air after decoration - Google Patents
Determination method for content of benzene in indoor air after decoration Download PDFInfo
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- CN105116070A CN105116070A CN201510537652.3A CN201510537652A CN105116070A CN 105116070 A CN105116070 A CN 105116070A CN 201510537652 A CN201510537652 A CN 201510537652A CN 105116070 A CN105116070 A CN 105116070A
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Abstract
The invention relates to the field of detection for indoor air pollutants, and particularly relates to a determination method for content of benzene in indoor air after decoration. According to the determination method provided by the invention, indoor air is collected by a sampling tube, the gas is desorbed by a thermal desorption instrument, and the gas desorbed from the thermal desorption instrument enters an online coupled gas chromatograph for separation and then is determined by using a hydrogen flame detector, wherein the desorption temperature of the thermal desorption instrument is 250 DEG C, and the desorption time is 4 min; the column flow of the gas chromatograph is 1 mL/min, the initial temperature of a column box is 40 DEG C, programmed heating is carried out to 250 DEG C after keeping for 8 min, and the heating rate is 3 DEG C/min while keeping for 2 min; and the temperature of a base of the hydrogen flame detector is 250 DEG C, and the flow of air, hydrogen and a make-up gas is 350 mL/min, 35 mL/min and 30 mL/min respectively. The determination method provided by the invention is high in universality, thereby having wide applicability and practical significance.
Description
Technical field
The present invention relates to indoor air pollutants detection field, be specially a kind of assay method fitting up room air benzene content.
Background technology
In recent years, along with the raising of people's living standard, indoor decorating and refurnishing materials consumption significantly increases, Determination of TVOC in Indoor Air concentration also increases, the incidence of disease such as " harmful building syndrome " and " sick Building related allergies asthma " is increased year by year, the harm caused is on the rise, and in pulpit, TVOC level also seems more urgent.The relevant criterion of current country to indoor coating has GB18582-2008 " in indoor decorating and refurnishing materials interior wall coating limits of harmful substances ", HJ2537-2014 " environmental labelling product technical requirement water paint " and GB24410-2009 " indoor decorating use woodwork coating " etc., it is more than limits of harmful substances standard, the harmful substance contents of main test material self, is different from building material and discharges aerial amount of pollutant (being mainly TVOC).TVOC is the major pollutants of room air, owing to being soluble in grease, is easy to be detrimental to health by pulmonary absorption.When its mass concentration is lower than 0.2mg/m
3time, human body has no adverse reaction, and exceedes this value, may cause discomfort, even occurs headache or the injury of other nerves.
Benzene, as one of pollutant TVOC principal ingredient, in interior decoration process at home, is usually main pollution products, therefore carries out indoor assay effectively accurately to it, will be of value to and eliminating accurately, and safeguard the health of people.
Summary of the invention
The object of the invention is to now provide a kind of assay method fitting up room air benzene content, adopt the equipment such as thermal desorptioner and gas chromatograph to measure, step of the present invention is comparatively simple, measurement result accurate and effective, is suitable for promoting.
For realizing the object of the invention, the technical scheme of employing is:
A kind of assay method fitting up room air benzene content, room air is gathered by sampling pipe, gas carries out desorb by pyrolysis analyzer, the gas separating sucking-off from pyrolysis analyzer enter on-line coupling enter be separated in gas chromatograph after measure with hydrogen flame detector, it is characterized in that: pyrolysis analyzer desorption temperature is 250 DEG C, desorption time is 4min; Gas chromatograph post flow is 1mL/min, and post case initial temperature is 40 DEG C, and after keeping 8min, temperature programme is to 250 DEG C, and heating rate is 3 DEG C/min, keeps 2min; Hydrogen flame detector base-plate temp is 250 DEG C, and air, hydrogen, make-up gas flow are respectively 350mL/min, 35mL/min, 30mL/min.
The present invention adopts pyrolysis analyzer, gas chromatograph, hydrogen flame determination method, measures fitment process and Indoor Air after Decoration benzene content, effectively can be separated identification with other components, thus the benzene content in Accurate Measurement air.Highly versatile of the present invention, therefore has applicability and realistic meaning widely.
Embodiment
Be described in further detail below by specific embodiment.
A kind of assay method fitting up room air benzene content, room air is gathered by sampling pipe, gas carries out desorb by pyrolysis analyzer, the gas separating sucking-off from pyrolysis analyzer enter on-line coupling enter be separated in gas chromatograph after measure with hydrogen flame detector, it is characterized in that: pyrolysis analyzer desorption temperature is 250 DEG C, desorption time is 4min; Gas chromatograph post flow is 1mL/min, and post case initial temperature is 40 DEG C, and after keeping 8min, temperature programme is to 250 DEG C, and heating rate is 3 DEG C/min, keeps 2min; Hydrogen flame detector base-plate temp is 250 DEG C, and air, hydrogen, make-up gas flow are respectively 350mL/min, 35mL/min, 30mL/min.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. fit up the assay method of room air benzene content for one kind, room air is gathered by sampling pipe, gas carries out desorb by pyrolysis analyzer, the gas separating sucking-off from pyrolysis analyzer enter on-line coupling enter be separated in gas chromatograph after measure with hydrogen flame detector, it is characterized in that: pyrolysis analyzer desorption temperature is 250 DEG C, desorption time is 4min; Gas chromatograph post flow is 1mL/min, and post case initial temperature is 40 DEG C, and after keeping 8min, temperature programme is to 250 DEG C, and heating rate is 3 DEG C/min, keeps 2min; Hydrogen flame detector base-plate temp is 250 DEG C, and air, hydrogen, make-up gas flow are respectively 350mL/min, 35mL/min, 30mL/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510537652.3A CN105116070A (en) | 2015-08-28 | 2015-08-28 | Determination method for content of benzene in indoor air after decoration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510537652.3A CN105116070A (en) | 2015-08-28 | 2015-08-28 | Determination method for content of benzene in indoor air after decoration |
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| CN105116070A true CN105116070A (en) | 2015-12-02 |
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| CN201510537652.3A Pending CN105116070A (en) | 2015-08-28 | 2015-08-28 | Determination method for content of benzene in indoor air after decoration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677739A (en) * | 2017-08-30 | 2018-02-09 | 广州市赛特检测有限公司 | A kind of method for detecting Indoor Air Benzene |
Citations (3)
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| WO2010109049A1 (en) * | 2009-03-25 | 2010-09-30 | Universitat De Valencia | Procedure for the passive sampling of atmospheric contaminants by the "veram" device |
| CN104155384A (en) * | 2014-08-28 | 2014-11-19 | 沈阳市宇驰检测技术有限公司 | Detection method of benzene series and total volatile organic compound |
| CN104597158A (en) * | 2015-01-20 | 2015-05-06 | 江苏新风环保科技有限公司 | Method for determining content of low-concentration volatile benzene series in indoor air and purifying material for low-concentration volatile benzene series |
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2015
- 2015-08-28 CN CN201510537652.3A patent/CN105116070A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010109049A1 (en) * | 2009-03-25 | 2010-09-30 | Universitat De Valencia | Procedure for the passive sampling of atmospheric contaminants by the "veram" device |
| CN104155384A (en) * | 2014-08-28 | 2014-11-19 | 沈阳市宇驰检测技术有限公司 | Detection method of benzene series and total volatile organic compound |
| CN104597158A (en) * | 2015-01-20 | 2015-05-06 | 江苏新风环保科技有限公司 | Method for determining content of low-concentration volatile benzene series in indoor air and purifying material for low-concentration volatile benzene series |
Non-Patent Citations (5)
| Title |
|---|
| E. MASSOLD 等: "Determination of VOC and TVOC in Air UsingThermal Desorption GC-MS–Practical Implications for Test Chamber Experiments", 《CHROMATOGRAPHIA》 * |
| P. WOLKOFF 等: "Indoor VOCs &om Household Floor Dust:Comparison of Headspace with Desorbed VOCs;Method for VOC Release Determination", 《INDOOR AIR》 * |
| 彭清涛 等: "热解吸直接进样气相色谱法分析室内空气中的总挥发性有机化合物", 《化学分析计量》 * |
| 王丽: "气相色谱法测定TVOC操作条件的选择", 《山西建筑》 * |
| 郭雅男 等: "毛细管气相色谱法测定室内环境空气中TVOC浓度的研究", 《环境工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677739A (en) * | 2017-08-30 | 2018-02-09 | 广州市赛特检测有限公司 | A kind of method for detecting Indoor Air Benzene |
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Application publication date: 20151202 |