CN113804810A - 一种检测VOCs气相色谱的色谱分离柱及其方法 - Google Patents

一种检测VOCs气相色谱的色谱分离柱及其方法 Download PDF

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CN113804810A
CN113804810A CN202010541466.8A CN202010541466A CN113804810A CN 113804810 A CN113804810 A CN 113804810A CN 202010541466 A CN202010541466 A CN 202010541466A CN 113804810 A CN113804810 A CN 113804810A
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刘铁兵
李珍
刘沅
师华定
刘孝阳
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Zhejiang Lover Health Science and Technology Development Co Ltd
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Abstract

一种检测VOCs气相色谱的色谱分离柱，采用活性炭、炭纳米管、石墨烯三种成分组成色谱分离柱，优点为：快速区分出不同的挥发性有机化合物，而得到挥发性有机化合物的有效监测。具有成本低、效率高、时间少、便携、实时、在线等的特点。

Description

一种检测VOCs气相色谱的色谱分离柱及其方法
技术领域
本发明涉及一种检测VOCs气相色谱的色谱分离柱及其方法。
背景技术
大气中挥发性有机物(VOC)主要来源于自然界排放和人类化石燃料(煤、石油和天然气)的使用。这类化合物包含大量具有高反应活性的有机物，可与大气中活性物种(如OH自由基和臭氧等)快速反应产生有机过氧基，而有机过氧基在城市富含NOx的大气中进一步参与反应，产生对人类及生态系统具有明显负面影响的臭氧。此外，部分活性挥发性有机物在大气中经过光氧化等复杂过程形成二次有机气溶胶，可改变辐射平衡进而影响全球气候变化。由于大气中挥发性有机物在大气臭氧和二次有机气溶胶的生成中具有重要作用，并且部分VOC对人体健康存在危害，大气挥发性有机物的研究成为近年来国内外大气化学研究的热点领域之一。
目前国际上已发展了多种测定挥发性有机物的监测技术和方法，但现有的 VOC分析技术和方法大多具有设备复杂、价格昂贵、操作繁冗和分析时间分辨率低的缺点， 与环境观测的实际需求有较大差距。因此，研究更新、更简单、更快速、应用物种更广的VOC 采样分析方法和分析技术，在环境领域具有重要的意义。
发明内容
本发明的目的是为了解决现有技术中存在的缺点，而提出的一种检测VOCs气相色谱的色谱分离柱及其方法。
为了实现上述目的，一种检测VOCs气相色谱的色谱分离柱，采用活性炭、炭纳米管、石墨烯三种成分组成色谱分离柱。
进一步的，活性炭占比为：70-90%；炭纳米管占比为：5-15%；石墨烯占比为：5-15%。
进一步的，活性炭：炭纳米管：石墨烯为90:5:5。
进一步的，活性炭：炭纳米管：石墨烯为80:10:10。
进一步的，活性炭：炭纳米管：石墨烯为70:15:15。
一种色谱分离柱检测VOCs气相色谱的方法，步骤1、建立采集通道；
步骤2、采集气体样品，对采集到的样品气化处理；
步骤3、进样；
步骤4、通过色谱分离柱进行分离；
步骤5、对分离后的挥发性有机物进行检测，并对检测结果进行分析处理。
进一步的，步骤5、对分离后的挥发性有机物采用电压、电频、波形多级程序控制，进行样品的检测。
优点为：快速区分出不同的挥发性有机化合物，而得到挥发性有机化合物的有效监测。具有成本低、效率高、时间少、便携、实时、在线等的特点。
具体实施方式
下面将结合本发明实施例，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。
一种检测VOCs气相色谱的色谱分离柱，采用活性炭、炭纳米管、石墨烯三种成分组成色谱分离柱。
一种检测VOCs气相色谱的色谱分离柱，活性炭占比为：70-90%；炭纳米管占比为：5-15%；石墨烯占比为：5-15%。
一种检测VOCs气相色谱的色谱分离柱，活性炭：炭纳米管：石墨烯为90:5:5。
一种检测VOCs气相色谱的色谱分离柱，活性炭：炭纳米管：石墨烯为80:10:10。
一种检测VOCs气相色谱的色谱分离柱，活性炭：炭纳米管：石墨烯为70:15:15。
一种色谱分离柱检测VOCs气相色谱的方法，步骤1、建立采集通道；
步骤2、采集气体样品，对采集到的气体样品处理；
步骤3、进样；
步骤4、通过色谱分离柱进行分离；
步骤5、对分离后的挥发性有机物进行检测，并对检测结果进行分析处理。
对分离后的挥发性有机物进入碳纳米管SnO2或其他检测器进行检测，采用电压、电频、波形多级程序控制，进行样品的检测，从而快速区分出不同的挥发性有机化合物，而得到挥发性有机化合物的有效监测。
根据VOCs的组成和含量不同分别采用活性炭、炭纳米管、石墨烯的不同比例和在分离柱中填充的不同密度来实现其分离的效果，再加上色谱仪器的分离柱温、载气压力、检测器温度、进样器温度等的控制促使检测得到更好的效果。
填充柱配料表
Figure DEST_PATH_IMAGE002
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。

Claims (7)

1.一种检测VOCs气相色谱的色谱分离柱，其特征在于:采用活性炭、炭纳米管、石墨烯三种成分组成色谱分离柱。
2.根据权利要求1所述的一种检测VOCs气相色谱的色谱分离柱，其特征在于:活性炭占比为：70-90%；炭纳米管占比为：5-15%；石墨烯占比为：5-15%。
3.根据权利要求2所述的一种检测VOCs气相色谱的色谱分离柱，其特征在于:活性炭：炭纳米管：石墨烯为90:5:5。
4.根据权利要求2所述的一种检测VOCs气相色谱的色谱分离柱，其特征在于:活性炭：炭纳米管：石墨烯为80:10:10。
5.根据权利要求2所述的一种检测VOCs气相色谱的色谱分离柱，其特征在于:活性炭：炭纳米管：石墨烯为70:15:15。
6.一种根据权利要求1-5所述的色谱分离柱检测VOCs气相色谱的方法，其特征在于:
步骤1、建立采集通道；
步骤2、采集样品，对采集到的样品气化处理；
步骤3、进样；
步骤4、通过色谱分离柱进行分离；
步骤5、对分离后的挥发性有机物进行检测，并对检测结果进行分析处理。
7.根据权利要求6所述的一种色谱分离柱检测VOCs气相色谱的方法，其特征在于:步骤5、对分离后的挥发性有机物采用电压、电频、波形多级程序控制，进行样品的检测。
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CN104777261A (zh) * 2015-04-10 2015-07-15 中国科学院生态环境研究中心 大气中挥发性有机物低温气相色谱分析系统、方法及装置
CN108490104A (zh) * 2018-03-05 2018-09-04 苏州感闻环境科技有限公司 一种微型气相色谱柱芯片及其制备方法
CN110308211A (zh) * 2018-03-20 2019-10-08 广州禾信仪器股份有限公司 挥发性有机物在线检测仪和方法

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WO2023183144A1 (en) * 2022-03-22 2023-09-28 The Regents Of The University Of Michigan Graphene as a stationary phase in gas chromatography
CN117427458A (zh) * 2023-12-20 2024-01-23 南京市计量监督检测院 一种VOCs废气处理系统及方法

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