Characterization of Dyes and Other Pollutants in the Effluent of a Textile Company by LC/NMR and LC/MS

Abstract

LC/NMR and LC/MS (the latter technique in the MSn mode) were used to characterize the organic constituents of industrial wastewater with emphasis on polar, nonvolatile compounds. In the effluent of a textile company, various compounds such as anthraquinone-type dyes and their byproducts, a fluorescent brightener, a byproduct from polyester production, and auxiliaries such as anionic and nonionic surfactants and their degradation products were identified. It is shown that the combined use of both hyphenated techniques provides complementary structural information. If applied under comparable chromatographic conditions, they are well-suited for the nontarget analysis.

Development of an HPLC-NMR method for the determination of PAHs in soil samples – a comparison with conventional methods

“…The information content of the HPLC-NMR method has been augmented by sequentially coupling to mass spectrometry [6,9,10,11]. In previous papers, we demonstrated the benefits of HPLC-NMR for the analysis of complex environmental samples including the quantification of pollutants and their degradation products over an environmentally relevant range of concentrations [12,13,14,15,16].…”

Process intensification in the textile industry: the role of membrane technology

“…The dyeing step has the largest risk for environmental pollution, because this step often requires high concentrations of organic dyes, additives and salts. Toxicity of dyes has been proved by several studies (Chung and Edward, 1992;Meyer, 1981;Preiss et al, 2000).…”

Analysis of sulfonated compounds by reversed-phase ion-pair chromatography—Mass spectrometry with on-line removal of non-volatile tetrabutyl ammonium ion-pairing agents

“…In this case, concentrations are at least one to two orders of magnitude lower and thus sensitive detection techniques are required. For this reason, there is still a demand for methods allowing efficient separation covering a broad range of components markedly differing in chemical structure for subsequent precise, reliable and unequivocal structural identification such as offered by LC-MS [1,2,3,4].…”