By a News Reporter-Staff News Editor at Science Letter -- Investigators publish new report on Chromatography. According to news reporting from Cordoba, Spain, by NewsRx journalists, research stated, "A simple and efficient method has been developed for the extraction and determination of sixteen common volatile halogenated disinfection by-products (DBPs) using the static headspace (HS) technique coupled with gas chromatography-mass spectrometry (GC-MS). The DBPs determined included trihalomethanes (THMs), halonitromethanes (HNMs) and haloacetonitriles (HANs)."
The news correspondents obtained a quote from the research from the University of Cordoba, "The extraction parameters (HS conditions, ionic strength and organic modifier) were studied in order to obtain the highest sensitivity. Under optimum conditions (water containing 250 mu L of methyl tert-butyl ether and 6 g of anhydrous sodium sulphate was heated 20 min at 80 degrees C), the HS-GC-MS method provides limits of detection between 10 and 200 ng/L and a relative standard deviation of similar to 5.6%. Samples collected from genuine tap water treated with different oxidising agents (ClO2/Cl-2, Cl-2/NH2Cl and O-3/Cl-2) in several disinfection treatment plants were successfully analysed in order to establish their effect on the occurrence of DBPs. In parallel, the influence of the main parameters of the water (pH, conductivity, nitrite, nitrate, free residual chlorine, permanganate oxidability and bromide) was also studied. The results suggest that the permanganate oxidability (related to organic matter) and the bromide concentration as well as disinfection conditions are directly related to the occurrence of THMs, HNMs and HANs, both in their concentrations and speciation."
According to the news reporters, the research concluded: "The method developed was compared to the reference EPA Method 551.1 for the analysis of tap water."
For more information on this research see: Speciation of common volatile halogenated disinfection by-products in tap water under different oxidising agents. Journal of Chromatography A, 2013;1310():113-120. Journal of Chromatography A can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Chromatography A - www.elsevier.com/wps/product/cws_home/502688)
Our news journalists report that additional information may be obtained by contacting I. Montesinos, University of Cordoba, Dept. of Analyt Chem, E-14071 Cordoba, Spain (see also Chromatography).
Keywords for this news article include: Spain, Europe, Cordoba, Chromatography
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