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RESEARCH ON THE TECHNICAL FEATURES AND POSSIBILITY OF RAPID DETERMINATION OF COD AND BOD_5 BY K_2CR_2O_7 ULTRAVIOLET SPECTROPHOTOMETRY

Xie Weiping ( Henan Urban Construction College, Pingdingshan, 467001)Li Zhonghe ( China University of Mining and Technology )  
In this paper, it was summarised the technical features of rapid determination of COD and BOD5 by K2Cr2O7 ultraviolet spectrophotometry,and its possibility and relevant conditions of application were studied in monitoring suface water, sewage and wastewater.By determination of actual samples, it was verified that this method has the comparability with the standard method.
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