Quantitative analysis of alkylbenzenesulfonate surfactants using continuous-flow fast atom bombardment spectrometry
- Indiana Univ., Bloomington, IN (United States)
A quantitative method for the analysis of linear alkylbenzenesulfonates (LAS) has been developed using continuous-flow fast atom bombardment and tandem mass spectrometry. Simultaneous analysis of all LAS homologues is possible by scanning the parent ions of m/z 183, which is a product ion common to all LAS subjected to collisionally induced dissociation. Similarly, branched alkylbenzenesulfonate (ABS) can be analyzed by scanning the parent ions of m/z 197. Samples were concentrated using solid-phase extraction on C{sub 18} disks. Because separation is not required, samples can be analyzed in 4 min or less using flow injection analysis. Quantitation is linear from 1 to at least 100 ng; the detection limit is 1 ng injected, corresponding to 0.5 {mu}g/L in 1-L water samples. This method has been used to determine LAS concentrations in samples taken from a wastewater treatment plant and in river water. In this activated sludge treatment plant, removal of LAS from wastewater occurred by adsorption to sludge as well as by biodegradation. Relative concentrations of longer chain homologues in sludge were higher than in the plant influent, indicating that these homologues accumulate on sludge. LAS adsorbed to sludge were eventually degraded in the plant`s aerobic sludge digester. 19 refs., 8 figs., 2 tabs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 478791
- Journal Information:
- Analytical Chemistry (Washington), Journal Name: Analytical Chemistry (Washington) Journal Issue: 13 Vol. 64; ISSN ANCHAM; ISSN 0003-2700
- Country of Publication:
- United States
- Language:
- English
Similar Records
Quantiative determination of sulfonated aliphatic and aromatic surfactants in sewage sludge by ion-pair/supercritical fluid extraction and derivatization gas chromatography/mass spectrometry
Determination of alkylbenzenesulfonate surfactants in groundwater using macroreticular resins and carbon-13 nuclear magnetic resonance spectrometry