22541
The changes in molecular size of humic matter subjected to catalyzed oxidative reaction were followed by high - performance size exclusion chromatography ( HPSEC ) with UV - vis and refractive index ( RI ) detectors in series , and by thermogravimetric ( TGA ) analysis .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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