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
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TENAX-TA+碳黑+碳分子篩復(fù)合富集管”是一種用于采集和富集空氣中揮發(fā)性有機物（VOCs）?的專業(yè)裝置。它通過組合不同特性的吸附劑，能更全面地捕獲多種類型的VOCs。
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這種復(fù)合富集管通常采用不銹鋼或玻璃/石英材質(zhì)制成。其核心設(shè)計是在一根采樣管內(nèi)順序填充三種不同的吸附劑：
Tenax-TA: 位于采樣氣流的最前端，是一種2,6-二苯基對苯醚的多孔聚合物。它本身顏色接近白色，具有疏水性（對水的親和力低），熱穩(wěn)定性好（最高可耐受350℃）。它主要負責(zé)吸附較高沸點（如C7-C30）?的揮發(fā)性有機物。
石墨化炭黑（如Carbopack B, STH-2）: 位于中間層。它的吸附強度中等，主要負責(zé)吸附中等沸點（如C5-C12）?的有機物。
碳分子篩（如Carboxen, TDX-01）: 最靠近出氣口，是一種強吸附劑。它的特點是具有非常高的比表面積，主要負責(zé)吸附低沸點、小分子（如C2-C5）?的揮發(fā)性有機物，例如乙烯、乙烷等。
這種“弱-中-強”依次填裝的設(shè)計，確保了不同極性和寬沸點范圍（從C2到C30甚至更高）的VOCs組分都能被有效捕獲和保留，防止在采樣過程中發(fā)生穿透損失，從而實現(xiàn)全面富集
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復(fù)合富集管廣泛應(yīng)用于需要監(jiān)測復(fù)雜VOCs混合物的場合：
環(huán)境空氣監(jiān)測：如固定污染源廢氣中有機污染物的吸附測定2、大氣痕量揮發(fā)性有機物采樣。
室內(nèi)空氣質(zhì)量（IAQ）檢測：符合《民用建筑工程室內(nèi)環(huán)境污染控制標(biāo)準(zhǔn)》（GB 50325-2020）和《室內(nèi)空氣質(zhì)量標(biāo)準(zhǔn)》（GB/T 18883-2002）等，用于檢測室內(nèi)空氣中的苯系物及總揮發(fā)性有機化合物（TVOC）。
工業(yè)與職業(yè)衛(wèi)生：用于工作場所空氣中VOCs的采樣檢測，以及特定行業(yè)如化工生產(chǎn)中的氣體分析。
特殊化合物分析：也可用于液化石油氣、二甲醚等特定揮發(fā)性有機化合物的采樣。
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名稱：富集管
填料：TA+石墨化碳黑+碳分子篩?+三氧化二鋁
材質(zhì)：硅烷化不銹鋼管
尺寸：25cm*1/8
應(yīng)用：VOCs富集-采樣-吸附
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應(yīng)用：
安捷倫490在線/便攜，4890,5890,6890,7820,7890,8860,8890
島津GC-14C，GC-2010，GC-2014，GC-2030
賽默飛1310,1300,1610,1600
瓦里安3800系列
布魯克PE580,590,680,690
磐諾A90，福立GC9790，華愛，天瑞，天美，GC7900，川儀，北分瑞利，東西電子，魯南瑞虹，捷島/科曉
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