Analysis of a retan agent used in the tanning process and its determination in tannery wastewater

Song, Z., Edwards, S. R., Howland, K. and Burns, R. G. (2003) Analysis of a retan agent used in the tanning process and its determination in tannery wastewater. Analytical Chemistry, 75 6: 1285-1293.


Author Song, Z.
Edwards, S. R.
Howland, K.
Burns, R. G.
Title Analysis of a retan agent used in the tanning process and its determination in tannery wastewater
Journal name Analytical Chemistry  (ERA 2012 Listed)    (ERA 2010 Rank A*)   Check publisher's open access policy
Publication date 2003
Sub-type Article
DOI 10.1021/ac020461y
Volume number 75
Issue number 6
ISSN 0003-2700
Start page 1285
End page 1293
Total pages 9
Place of publication Washington
Publisher Amer Chemical Soc
Language eng
Abstract The chemical structure and composition of a retan agent, CNSF (condensation product of naphthalenesulfonic acid (NSA) and formaldehyde), and related components contained in tannery wastewaters were analyzed by ion-pair liquid chromatography coupled to electrospray ionization mass spectrometry (IPC-HPLC/ESI-MS) in negative ion mode. This method allows high-resolution separation of polymers. CNSF contained linear NSA oligomers (n = 1-11) that were eluted in order of increasing degree of polymerization. The area under the peaks was correlated to the concentration. The theoretical correlation between retention time and the molecular mass of CNSF oligomers can be used to predict the actual distribution of molecular mass or degree of polymerization. The CNSF consisted of 34.3% monomers, 14.8% dimers, 15.3% trimers and 12.1% tetramers. Other oligomers (n = 5-11) accounted for the remaining 23.5%. Using solid-phase extraction techniques and HPLC/MS, sulfonated monomers, dimers, and trimers were detected in three tannery wastewaters (A-C). Monomers (NSA and naphthalenedisulfonic acid) were one of the major components and ranged from 1.2-(C) to 22.0% (B). Concentrations of 2-naphthalenesulfomc acid were 4.9 mg/L (A), 30.1 mg/L (B), and 0.6 mg/L (C). A high proportion of dimers (18.5%) and trimers (14.5%) were detected in wastewater C, as compared with A (6.4 and 0.7%) and B (3.92 and 0.2%). The method presented allows the analysis of aromatic sulfonates in syntan and tannery wastewater.
Keyword Chemistry, Analytical
Performance Liquid-chromatography
Ion-pair Chromatography
Electrospray-mass-spectrometry
Solid-phase Extraction
Aromatic Sulfonates
Water-treatment
Industrial Effluents
Benzene-sulfonate
Polar
Naphthalenesulfonate
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article
Collections: Excellence in Research Australia (ERA) - Collection
School of Agriculture and Food Sciences
 
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