Abstract
This is a method for determination of lignin and humic substances in waters by HPLC with fluorimetric detection. Water samples are extracted with ethyl acetate and the carboxylic acids in these extracts are labeled with 4-Br-MMC. Results indicate that this method might be applicable to characterzation of humic waters and differentiation of humic and lignin compounds in recipient waters of pulp mills. Further experiments are needed.
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