TENAX-TA+carbon black+carbon molecular sieve composite enrichment tube "is a professional device used for collecting and enriching volatile organic compounds (VOCs) in the air. It can capture various types of VOCs more comprehensively by combining adsorbents with different characteristics.
Tenax TA: Located at the forefront of the sampled airflow, it is a porous polymer of 2,6-diphenyl-phenylether. It has a color close to white, hydrophobicity (low affinity for water), and good thermal stability (can withstand up to 350 ℃). It is mainly responsible for adsorbing volatile organic compounds with higher boiling points (such as C7-C30).
Graphitic carbon black (such as Carbopack B, STH-2): located in the middle layer. It has moderate adsorption strength and is mainly responsible for adsorbing organic compounds with medium boiling points (such as C5-C12).
Carbon molecular sieve (such as Carboxen, TDX-01): closest to the outlet, it is a strong adsorbent. Its characteristic is a very high specific surface area, mainly responsible for adsorbing volatile organic compounds with low boiling points and small molecules (such as C2-C5), such as ethylene, ethane, etc.
This "weak medium strong" sequential filling design ensures that VOCs components with different polarities and wide boiling ranges (from C2 to C30 or even higher) can be effectively captured and retained, preventing penetration loss during the sampling process and achieving comprehensive enrichment
Composite enrichment tubes are widely used in situations where complex VOCs mixtures need to be monitored:
Environmental air monitoring: such as adsorption determination of organic pollutants in fixed pollution source exhaust gas, and sampling of trace volatile organic compounds in the atmosphere.
Indoor Air Quality (IAQ) Testing: Compliant with the "Indoor Environmental Pollution Control Standards for Civil Building Engineering" (GB 50325-2020) and "Indoor Air Quality Standards" (GB/T 18883-2002), it is used to detect benzene derivatives and total volatile organic compounds (TVOC) in indoor air.
Industrial and Occupational Health: Used for sampling and testing VOCs in workplace air, as well as gas analysis in specific industries such as chemical production.
Special compound analysis: It can also be used for sampling specific volatile organic compounds such as liquefied petroleum gas and dimethyl ether.
Name: Enrichment Tube
Packing: TA+graphitized carbon black+carbon molecular sieve+aluminum oxide
Material: Silanized stainless steel pipe
Size: 25cm * 1/8
Application: VOCs enrichment sampling adsorption
Application:
Agilent 490 online/portable, 48905890689088608890
TENAX-TA+碳黑+碳分子筛复合富集管”是一种用于采集和富集空气中挥发性有机物（VOCs） 的专业装置。它通过组合不同特性的吸附剂，能更全面地捕获多种类型的VOCs。
这种复合富集管通常采用不锈钢或玻璃/石英材质制成。其核心设计是在一根采样管内顺序填充三种不同的吸附剂：
Tenax-TA: 位于采样气流的最前端，是一种2,6-二苯基对苯醚的多孔聚合物。它本身颜色接近白色，具有疏水性（对水的亲和力低），热稳定性好（最高可耐受350℃）。它主要负责吸附较高沸点（如C7-C30） 的挥发性有机物。
石墨化炭黑（如Carbopack B, STH-2）: 位于中间层。它的吸附强度中等，主要负责吸附中等沸点（如C5-C12） 的有机物。
碳分子筛（如Carboxen, TDX-01）: 最靠近出气口，是一种强吸附剂。它的特点是具有非常高的比表面积，主要负责吸附低沸点、小分子（如C2-C5） 的挥发性有机物，例如乙烯、乙烷等。
这种“弱-中-强”依次填装的设计，确保了不同极性和宽沸点范围（从C2到C30甚至更高）的VOCs组分都能被有效捕获和保留，防止在采样过程中发生穿透损失，从而实现全面富集
复合富集管广泛应用于需要监测复杂VOCs混合物的场合：
环境空气监测：如固定污染源废气中有机污染物的吸附测定2、大气痕量挥发性有机物采样。
室内空气质量（IAQ）检测：符合《民用建筑工程室内环境污染控制标准》（GB 50325-2020）和《室内空气质量标准》（GB/T 18883-2002）等，用于检测室内空气中的苯系物及总挥发性有机化合物（TVOC）。
工业与职业卫生：用于工作场所空气中VOCs的采样检测，以及特定行业如化工生产中的气体分析。
特殊化合物分析：也可用于液化石油气、二甲醚等特定挥发性有机化合物的采样。
名称：富集管
填料：TA+石墨化碳黑+碳分子筛 +三氧化二铝
材质：硅烷化不锈钢管
尺寸：25cm*1/8
应用：VOCs富集-采样-吸附
应用：
安捷伦490在线/便携，4890,5890,6890,7820,7890,8860,8890
岛津GC-14C，GC-2010，GC-2014，GC-2030
赛默飞1310,1300,1610,1600
瓦里安3800系列
布鲁克PE580,590,680,690
磐诺A90，福立GC9790，华爱，天瑞，天美，GC7900，川仪，北分瑞利，东西电子，鲁南瑞虹，捷岛/科晓
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