14459
We study mass transfer of alkanes in BPL activated carbon using the concentration - swing frequency response method , which can easily discriminate among mass transfer mechanisms .
 Chemical: alkanes; Chemical: carbon
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: alkanes; Chemical: carbon