Analytical procedures for the determination of disperse azo dyes
- Environmental Protection Agency, Las Vegas, NV (USA)
- Lockheed Engineering and Management Services Co., Las Vegas, NV (USA)
Disperse Blue 79 is the most widely-used azo dye in the US. Its economic importance for the dye industry and textile industry is very great. Because of its use and potential for degradation to aromatic amines, this compound has been chosen for testing by the Interagency Testing Committee. The authors laboratory has been developing methods for the analytical determination of Disperse Blue 79 and any possible degradation products in wastewater. This work has been taking place in conjunction with the study of the fate of azo dyes in the wastewater treatment processes by the Water Engineering Research Laboratory of the US EPA in Cincinnati. There were various phases for this analytical development. The first step involved purifying the commercial material or presscake to obtain a standard for quantitative determination. A combination of HPLC, TLC and mass spectrometric methods was used to determine purity after extraction and column cleanup. Phase two involved the extraction of the dye from the matrices involved. The third phase was the actual testing of Disperse Blue 79 in the waste activated sludge system and anaerobic digester. Recovery of the dye and any degradation products at each sampling point (e.g., secondary effluent, waste activated sludge) was the goal of this phase.
- OSTI ID:
- 7072140
- Report Number(s):
- CONF-8909234-; CODEN: ACWCA
- Journal Information:
- Preprints of Papers Presented at National Meeting, Division of Water, Air and Waste Chemistry, American Chemical Society; (USA), Vol. 28:2; Conference: Advisory group meeting on nuclear data for radiation damage assessment and related safety aspects, Vienna (Austria), 19-22 Sep 1989; ISSN 0099-7293
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
AZO DYES
MEASURING METHODS
WASTE WATER
QUANTITATIVE CHEMICAL ANALYSIS
ACTIVATED SLUDGE PROCESS
BIODEGRADATION
LIQUID COLUMN CHROMATOGRAPHY
MASS SPECTROSCOPY
SOLVENT EXTRACTION
AZO COMPOUNDS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMATOGRAPHY
DECOMPOSITION
DYES
EXTRACTION
HYDROGEN COMPOUNDS
LIQUID WASTES
MANAGEMENT
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PROCESSING
SEPARATION PROCESSES
SPECTROSCOPY
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
WATER
400102* - Chemical & Spectral Procedures
540320 - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)
400105 - Separation Procedures