Carbotrap^® B吸附剂

石墨化炭黑（GCB）可以是无孔的或多孔的。石墨化过程产生高纯度表面，具有很好的吸附和解吸（如果需要）性质。表面相互作用仅取决于色散（伦敦）力。这些粒子的特性包括：

• 颗粒状
• 易碎
• 用于相对于 C3-C20+ 正构烷烃分析分子大小
• 疏水性（可用于高湿度环境）

通常，相对于碳分子筛（CMS）吸附剂，GCB 吸附剂吸附强度相对较弱，与球形石墨化聚合物碳（SGPC）吸附剂相似。我们的 Carbotrap 产品是一种 GCB 吸附剂。

• 颗粒为 20/40 目
• 这些大颗粒允许高流速，无过多的压降

更多有关我们的专业碳吸附剂的资料，请见 sigma-aldrich.com/carbon

Carbopack^™ Y was used for determination of contamination caused by pesticides like alachlor, atrazine, captan, formothion, lindane and phosalone in atmospheric samples. Carbopack Y was modified with mono-molecular layer of heptakis-(2,3,6-tri-O-methyl)-ß-cyclodextrin and was used in gas chromatography to study the effect of size and spatial structure of adsorbate molecules on adsorption of organic vapours.

Carbotrap^®/Carbopack^™ adsorbent can withstand high bake-out temperature without losing the mechanical and chemical integrity. It has a high affinity for isoprene and does not retain significant amounts of water. Furthermore it has a tendency to pulverize if it is packed too tightly. Carbotrap^®/Carbopack^™ adsorbent was used to quantitatively determine trace amounts of volatile organic compounds (VOCs) in air. It was also used for designing sampling protocols on the basis of its retention volume of the gaseous organic compounds of interest.

Carbopack is a trademark of Merck KGaA, Darmstadt, Germany

Carbotrap is a registered trademark of Merck KGaA, Darmstadt, Germany