Yoon Y H, Nelson J H
DataChem Laboratories, Salt Lake City, UT 84123.
Am Ind Hyg Assoc J. 1992 May;53(5):303-16. doi: 10.1080/15298669291359708.
A model developed in previous studies was applied to investigate the respirator cartridge contaminant breakthrough of 121 different chemical compounds. Included in this set of 121 contaminants are representative examples of various types of organic compounds, (e.g., acetates, ketones, aromatics, alcohols, amines, alkanes, chlorinated hydrocarbons). Intrinsic to the model are two important parameters, k' (a rate constant) and tau (50% breakthrough time). Values of the two parameters pertinent to an assault concentration of 1000 ppm were determined for each of the 121 organic compounds. These values were used to calculate the breakthrough time at specified fractional breakthrough as well as the respirator cartridge loading capacity under various conditions. An approach was presented that permits the determination of contaminant loading capacity (on carbon) as a function of breakthrough time at a specified assault concentration. The effect of contaminant assault concentration on the saturation capacity was investigated for various combinations of nine different compounds and three different types of respirator cartridges. Calculated saturation capacity data derived from application of the model compare favorably (+/- 5%) with corresponding experimental data. Saturation capacities calculated by using the model addressed in this study were compared with corresponding results previously calculated by others using the Dubinin adsorption isotherm.
先前研究中开发的一个模型被用于研究121种不同化合物在呼吸防护滤毒罐中的污染物穿透情况。这121种污染物中包括各类有机化合物的代表性实例（如醋酸酯、酮类、芳烃、醇类、胺类、烷烃、氯代烃）。该模型的固有参数有两个，即k'（速率常数）和tau（50%穿透时间）。针对121种有机化合物中的每一种，都确定了与1000 ppm攻击浓度相关的这两个参数的值。这些值被用于计算特定分数穿透时的穿透时间以及各种条件下呼吸防护滤毒罐的装填容量。提出了一种方法，可确定在特定攻击浓度下污染物装填容量（基于活性炭）与穿透时间的函数关系。针对9种不同化合物和3种不同类型呼吸防护滤毒罐的各种组合，研究了污染物攻击浓度对饱和容量的影响。该模型应用得出的计算饱和容量数据与相应实验数据相比具有良好的一致性（±5%）。将本研究中使用该模型计算的饱和容量与其他人先前使用杜比宁吸附等温线计算的相应结果进行了比较。
