Tenax-TA采样管 吸附管和热解吸及色谱分析TVOC

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吸附管和热解吸及色谱分析TVOC
吸附管和热解吸及色谱分析TVOC 详细信息：

浩瀚色谱（山东）应用技术开发有限公司通过测定苯回收率的方法探讨了使用Tenax-TA吸附剂检测室内空气中苯浓度的影响因素,如样品浓度、Tenax-TA试剂重量、采样温度、采样流速、采样体积等。试验结果表明,在一定浓度范围内,样品浓度不影响苯回收率;采样流速对苯回收率影响较小;而Tenax-TA试剂重量、采样温度和采样体积对苯回收率影响显著。


Tenax-TA吸附管是测定室内空气挥发性有机化合物(TVOC)的重要材料,保持Tenax-TA吸附管空白值处于较低水平对测定结果的准确性非常重要。选择国内外具有代表性的三种不同型号Tenax-TA吸附管,探讨了新购吸附管活化时间、活化后的存放环境和保存时间以及吸附管的密封情况对空白值的影响,并终给出吸附管的保存要求和空白值的高允许含量,以室内空气检测结果的准确性。


名称：TVOC采样管/Tenax -TA吸附管
外径：不锈钢管内径为4mm，外径为6mm，外径1/4（美标）。
长度：150mm、90mm，3.5英寸（美标）。
填充重量：200mg
吸附剂的粒径一般为60～80目。
型号：6*90,  6*150， 1/4*3.5Y英寸
形状：直通，U型
材质：不锈钢/玻璃
密封：胶冒（默认），四氟（选配），黄铜（选购）
适用于室内空气浓度0.5mg/m³～100mg/m³之间的空气中VOCs的检测。
参考标准：
HJ 583-2010环境空气苯系物的测定 固体吸附-热脱附/气相色谱法
GB50325-2010民用建筑工程室内环境污染控制规范
BG/T18883-2002室内空气质量标准
HJ644-2013环境空气 挥发性有机物测定


吸附管和热解吸及色谱分析TVOC 测试评价：




Adsorption tube and thermal desorption and chromatographic analysis TVOC
Adsorption tube and thermal desorption and chromatographic analysis of TVOC Details:

Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. has explored the influencing factors of using Tenax-TA adsorbent to detect benzene concentration in indoor air by measuring the benzene recovery rate, such as sample concentration, Tenax-TA reagent weight, sampling temperature, and sampling flow rate. , Sampling volume, etc. The test results show that within a certain concentration range, the sample concentration does not affect the benzene recovery rate; the sampling flow rate has little effect on the benzene recovery rate; while the Tenax-TA reagent weight, sampling temperature and sampling volume have significant effects on the benzene recovery rate.


Tenax-TA adsorption tube is an important material for the determination of indoor air volatile organic compounds (TVOC). Keeping the blank value of Tenax-TA adsorption tube at a low level is very important for the accuracy of the measurement results. Three representative types of Tenax-TA adsorption tubes at home and abroad are selected, and the activation time of the newly purchased adsorption tube, the storage environment and storage time after activation, and the influence of the sealing condition of the adsorption tube on the blank value are discussed, and finally given The storage requirements of the adsorption tube and the maximum allowable content of the blank value are to ensure the accuracy of the indoor air test results.


Name: TVOC sampling tube/Tenax-TA adsorption tube
Outer diameter: The inner diameter of the stainless steel pipe is 4mm, the outer diameter is 6mm, and the outer diameter is 1/4 (American standard).
Length: 150mm, 90mm, 3.5 inches (American standard).
Filling weight: 200mg
The particle size of the adsorbent is generally 60 to 80 mesh.
Model: 6*90, 6*150, 1/4*3.5Y inches
Shape: straight, U-shaped
Material: stainless steel/glass
Seal: rubber cap (default), PTFE (optional), brass (optional)
It is suitable for the detection of VOCs in the air with indoor air concentration between 0.5mg/m³～100mg/m³.
Guideline:
HJ 583-2010 Determination of Ambient Air Benzene Series Solid Adsorption-Thermal Desorption/Gas Chromatography
GB50325-2010 Indoor Environmental Pollution Control Code for Civil Construction Engineering
BG/T18883-2002 Indoor Air Quality Standard
HJ644-2013 Ambient Air Volatile Organic Compound Determination


Adsorption tube and thermal desorption and chromatographic analysis TVOC test evaluation: