The Oxidation Colour Reaction of the New Colour Reagent 2,3,7-Trihydroxy-9-dibromo-hydroxyphenyi fluorone and Determination of Cr in Waste Water by Dual-Wavelength Spectrophotometry

• 新显色剂二溴羟基苯基荧光酮的氧化显色反应及双波长分光光度法测定废水中的铬