CN104597149A - 室内空气挥发性污染物浓度检测方法 - Google Patents
室内空气挥发性污染物浓度检测方法 Download PDFInfo
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Abstract
本发明空气挥发性污染物浓度检测方法,其特征在于,采用气相色谱仪方法检测,所述方法为室内空气采样量为10~20L,热解吸为100mL气体样品,气相色谱仪进样为1mL,色谱柱温度,110℃;检测室温度120℃;汽化室温度150℃;进气速率氮气20mL/min,氢气50mL/min;空气200mL/min。挥发性有机物是室内空气污染物中重要的组成部分,本方法确定了优化的检测工艺方法具有灵敏度高、操作简便、重现性好、准确可靠等特点,适合室内空气挥发性有机物的测定,同时也可用于室外挥发性有机物的分析。
Description
技术领域
本发明涉及空气污染物检测技术,特别涉及室内空气挥发性污染物浓度检测方法。
背景技术
随着近年来家居装修业的发展,各种建筑材料被广泛应用,室内环境污染也日益严重。室内某些污染物的水平远远大于室外,特别是新居室内的挥发性有机化合物(VOC),如芳香烃(苯、甲苯、二甲苯等)、酮类、醛类、氨和胺类等等,其浓度足以对人类健康构成危害,美国肺癌协会列出了五个首要污染物为香烟烟雾、VOC、甲醛、霉菌灰尘和一氧化碳,其认为,室内空气的主要污染物有可吸人颗粒物,气溶胶,跳,NOx,C0,C02,氨,甲醛,VOC,PAHs,尼古丁,丙烯醛,氛,砷,汞和微生物等。大气中的有机污染物根据挥发性质可分为挥发性有机污染物(VOCs)、半挥发性有机污染物(SVOCs)和不挥发性有机污染物(NVOCs)。半挥发性有机物(SVOC)一般是指沸点在170~350℃、蒸气压在(0.1~10-7)×133.322Pa的有机物,空气中大部分致癌物质属于这一类,均为致癌物,这类有机物在大气中主要以气态和气溶胶两种形态存在。半挥发性有机物能在气相和空气中的固相颗粒物之间形成一定的平衡,部分易吸附在颗粒物上被人体吸入,对人体造成危害,所以我国许多学者开展了颗粒物中半挥发性有机物的污染研究。
发明内容
本发明的在现有测定技术的基础上,提供适于室内空气检测方法,技术方案:室内空气挥发性污染物浓度检测方法,其特征在于,采用气相色谱仪方法检测,所述方法为室内空气采样量为10~20L,热解吸为100mL气体样品,气相色谱仪进样为1mL,色谱柱温度,110℃;检测室温度120℃;汽化室温度150℃;进气速率氮气20mL/min,氢气50mL/min;空气200mL/min。
所述方法将吸附管与采样泵用塑料或橡胶管连接,采样管垂直安装在呼吸带,调节采样泵的流量,采样泵的采样量为10L,按相同方法采集等量的室外空气样品作现场空白对照。
所述方法加标回收率为92.14%~98.97%。
挥发性有机物是室内空气污染物中重要的组成部分,本方法确定了优化的检测工艺方法具有灵敏度高、操作简便、重现性好、准确可靠等特点,适合室内空气挥发性有机物的测定,同时也可用于室外挥发性有机物的分析。
具体实施方式
下述非限制性实施例可以使本领域的普通技术人员更全面地理解本发明,但不以任何方式限制本发明。
实施例1
室内空气挥发性污染物浓度检测方法,其特征在于,采用气相色谱仪方法检测,所述方法为室内空气采样量为10~20L,热解吸为100mL气体样品,气相色谱仪进样为1mL,色谱柱温度,110℃;检测室温度120℃;汽化室温度150℃;进气速率氮气20mL/min,氢气50mL/min;空气200mL/min。所述方法将吸附管与采样泵用塑料或橡胶管连接,采样管垂直安装在呼吸带,调节采样泵的流量,采样泵的采样量为10L,按相同方法采集等量的室外空气样品作现场空白对照。所述方法加标回收率为92.14%~98.97%。
Claims (3)
1.室内空气挥发性污染物浓度检测方法,其特征在于,采用气相色谱仪方法检测,所述方法为室内空气采样量为10~20L,热解吸为100mL气体样品,气相色谱仪进样为1mL,色谱柱温度,110℃;检测室温度120℃;汽化室温度150℃;进气速率氮气20mL/min,氢气50mL/min;空气200mL/min。
2.根据权利要求1所述的室内空气挥发性污染物浓度检测方法,其特征在于,所述方法将吸附管与采样泵用塑料或橡胶管连接,采样管垂直安装在呼吸带,调节采样泵的流量,采样泵的采样量为10L,按相同方法采集等量的室外空气样品作现场空白对照。
3.根据权利要求1所述的室内空气挥发性污染物浓度检测方法,其特征在于,所述方法加标回收率为92.14%~98.97%。
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105675358A (zh) * | 2016-01-27 | 2016-06-15 | 上海杰诺质量检测技术有限公司 | 挥发性有机物的采样系统 |
US11169124B2 (en) | 2017-11-22 | 2021-11-09 | Entech Instruments Inc. | System and method for real time monitoring of a chemical sample |
US11549921B2 (en) | 2017-11-22 | 2023-01-10 | Entech Instruments Inc. | System and method for real time monitoring of a chemical sample |
US11946912B2 (en) | 2020-06-30 | 2024-04-02 | Entech Instruments Inc. | System and method of trace-level analysis of chemical compounds |
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2013
- 2013-10-31 CN CN201310538543.4A patent/CN104597149A/zh active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105675358A (zh) * | 2016-01-27 | 2016-06-15 | 上海杰诺质量检测技术有限公司 | 挥发性有机物的采样系统 |
US11169124B2 (en) | 2017-11-22 | 2021-11-09 | Entech Instruments Inc. | System and method for real time monitoring of a chemical sample |
US11549921B2 (en) | 2017-11-22 | 2023-01-10 | Entech Instruments Inc. | System and method for real time monitoring of a chemical sample |
US11946912B2 (en) | 2020-06-30 | 2024-04-02 | Entech Instruments Inc. | System and method of trace-level analysis of chemical compounds |
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