[Determination of anions in the products of ozonation of reactive dye by ion chromatography].
A method for the determination of anions in the degradation products of C. I. Reactive Red 120 by ozonation was investigated. The sample can be pretreated with a Dionex OnGuard P column, which has high selectivity for removing phenols, azo group-contaning compounds, aromatic carboxylic aicds etc. For the separation of organic and inorganic anions in the products, the anion exchange chromatograhy with gradient elution of NaOH was used. All the species were detected by both suppressed conductivity and UV absorbance detectors. The sulfate, oxalate, chloride, nitrate and formate could be identified even in very low concentration with ion chromatography, within 18 min, with the recoveries between 91.6% - 108.3%. The results indicate that the method is reliable, simple, rapid and especially sensitive. In combining with the determination results of conventional parameters of the solution of Reactive Red 120, a preliminary elucidation of the degradation mechanism
Zhang
Fei-Fang
FF
Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116012, China.
Liang
Xin-Miao
XM
Zhang
Qing
Q
Chen
Ji-Ping
JP
Yediler
Ayfer
A
Kettrup
Antonius
A
D000838:Anions / Q000032:analysis*; D001391:Azo Compounds / Q000737:chemistry; D002852:Chromatography, Ion Exchange / Q000379:methods*; D004396:Coloring Agents / Q000737:chemistry*; D014227:Triazines / Q000737:chemistry*
D000838:Anions; D001391:Azo Compounds; D004396:Coloring Agents; D014227:Triazines; C042516:reactive red 120 dye