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建立了用离子色谱测定未经水解的活性红 1 2 0 (C I ReactiveRed 1 2 0 )染料臭氧化产物中的阴离子的方法。染料样品经OnGuardP型前处理柱过滤后可有效去除其中一些有机物 (如偶氮化合物 )。采用DionexIonPacAS 1 1色谱柱分离 ,NaOH溶液梯度洗脱 ,电导或紫外吸收检测 ,可在 1 8min内完成染料臭氧降解后产物中的阴离子(SO2 - 4,Cl- ,NO- 3,HCOO- 和C2 O2 - 4)的测定。 5种阴离子的加标回收率在 91 6 %～ 1 0 8 3 %。结合染料溶液常规参数的测定结果 ,对臭氧降解活性红 1 2 0染料的机理进行了初步的探讨
A method was developed for the determination of anions in the undissolved Reactive Red 1 2 0 dye ozonation products by ion chromatography. Dye samples can be effectively removed from some of these organic compounds (such as azo compounds) by OnGuardP pretreatment columns. DionexIonPacAS 1 1 column separation, NaOH gradient elution, conductivity or UV absorption detection, can be completed within 18min after the degradation of the dye ozone degradation of the products (SO2 - 4, Cl -, NO3, HCOO - and C2 O2 - 4) determination. The spiked recoveries of 5 anions ranged from 91 6% to 1 0 8 3%. Combined with the determination of the conventional parameters of the dye solution, the mechanism of ozone-degrading reactive red 120 dye was preliminarily discussed