16486
The KOC values were closely correlated ( p < 0 . 001 ) with soot carbon content , while the amount of carboxylic or phenolic functional groups may have affected KDOC .
 carbon, carboxylic, phenolic
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 carbon, carboxylic, phenolic