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《Fujian Analysis & Testing》 2009-02
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Determination of o-Dihydroxybenzene,m-Dihydroxybenzene and p-Dihydroxybenzene by Dual-wavelength Ratio Spectrometric

DU Jian-zhong,LIANG Feng-yan,TAN Guo-bing(Chemistry Science and technology School,Zhanjiang Normal University,Zhanjiang,guangdong 524048,China)  
According to the feature of ration the o-dihydroxybenzene m-dihydroxybenzene and p-dihydroxybenzene,If taking p-dihydroxybenzene as disturbance component,224nm,277 nm were chosen as the determining wavelengths of the o-dihydroxybenzene.If taking o-dihydroxybenzene as disturbance component,231 nm,284 nm were chosen as the determining wavelengths of the m-dihydroxybenzene.And if taking m-dihydroxybenzene as disturbance component,220 nm and 231 nm were chosen as the determining wavelengths of the p-dihydroxybenzene.It is shown that good linear relationships exit for o-dihydroxybenzene(0.5 mg/L～80 mg/L),m-dihydroxybenzene(0.3 mg/L～120 mg/L) and p-dihydroxybenzene(0.4 mg/L～80 mg/L).The average recoveries were 99.2%,102.08% and 101.7% respectively.The method was simple and practical with fewer determination wavelengths,as well as be easy to spread for application.
【CateGory Index】： O625.312
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