Organic Contaminants in Waste Water, Sludge and Sediment : by D. Quaghebeur, I. Temmerman, G. Angeletti
By D. Quaghebeur, I. Temmerman, G. Angeletti
Court cases of a workshop held in Brussels, Belgium, 26-27 October 1988, less than the auspices of rate ecu Cooperation in medical and know-how study - price 641 and 681.
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Additional resources for Organic Contaminants in Waste Water, Sludge and Sediment : Occurrence, Fate and Disposal
All of the techniques produced variable results. Recoveries of spiked compounds ranged from 0 to >100% and, in general, their relative standard deviations ranged from 20 to 50%. Extraction of wet sludge using a high speed mixer was reported to be the most satisfactory technique. g. chlorinated solvents. These groups of compounds were selected since they are in widespread use in industry and in some domestic products and would therefore be prevalent in crude sewage and may accumulate in sewage sludge.
TBPs. Phosphate esters are readily extracted from water using dichloromethane23. For large sample volumes containing concentrations in the ng L−1 range, XAD resin adsorption appears to be the method of 22 ORGANIC CONTAMINANTS IN WASTE WATER, SLUDGE AND SEDIMENT FIGURE 4. Comparison of oligomeric distribution of NPEOs in different environmental compartments. choice. Recovery efficiencies 70% for arylphosphotes have been reported24. Fig 6 shows a characteristic NPD chromatogram of alkylphosphates isolated from municipal wastewaters by LLE.
A large number of contaminants were detected using both techniques although, as expected, a more restricted range was observed in the steam distillation extract. This latter technique appears to be particularly suitable for the isolation of aromatic and aliphatic hydrocarbons from sewage sludges. For example, a wide range of linear alkylbenzenes (LAB), naphthalene, alkyl naphthalenes, polycyclic aromatic hydrocarbons (PAH) and alkyl substituted PAHs were identified in extracts from both samples.