The diphenyl-thiocarbazone extraction and spectrophotometry were developed for indirect determination of residual chlorine in water distribution system.
立了采用双硫腙萃取光度法间接测定管网水中余氯的新方法。
The diphenyl-thiocarbazone extraction and spectrophotometry were developed for indirect determination of residual chlorine in water distribution system.
立了采用双硫腙萃取光度法间接测定管网水中余氯的新方法。
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