Haloacetic acids, determining

Ahrer, W., and Buchberger, W. (1999). Determination of haloacetic acids by the combination of nonaqueous capillary-electrophoresis and mass-spectrometry. Fresenius J. Anal. Chem. 365, 604-609. 

Determination of Haloacetic Acids in Drinking Water by LLE, Derivatization, and GC with ECD... 

Determination of Haloacetic Acids and Dalapon in Drinking Water by Ion-Exchange LSE and GC widi ECD... 

Munch DJ, Munch JW, Pawlecki AM (1995) EPA Method 552.2. Determination of haloacetic acids and dalapon in drinking water by liquid-liquid extraction, derivatization and gas chromatography with electron capture detection. U.S. EPA, Cincinnati, OH, Available at http //www.caslab.com/EPA-Methods/PDF/552 2.pdf... 

An MIP film attached to a quartz resonator of the QCM transducer has been used successfully to devise a chemosensor for determination of disinfection by-products of haloacetic acids in drinking water [128]. An ACN solution of trichloroacetic acid (TCAA), VPD, EGDMA and AIBN, used as the template, functional monomer, cross-linker and initiator, respectively, has been polymerized thermo-radically. Next, the resulting MIP was spin-coated on a quartz resonator to form a thin film. The TCAA template was then extracted by rinsing the film with water. This TCAA... 

Barron, L. and B. Paul. 2006. Simultaneous determination of trace oxyhalides and haloacetic acids using suppressed ion chromatography-electrospray mass spectrometry. Talanta 69 621-630. 

This reaction is the dominant dehalogenation pathway in reduction of halogenated methanes [84] and haloacetic acids [85]. In Fig. 4, this reaction is illustrated for perchloroethene (PCE), where complete dechlorination by this pathway requires multiple hydrogenolysis steps. The relative rates of these steps are a critical concern because they determine whether... 

Loos, R. and Barcelo, D. Determination of haloacetic acids in aqueous enviromnents by sohd-phase extraction followed by ion-pair liquid chromatography-electrospray ionization mass spectrometric detection. J. Chromatogr. A. 2001, 938,45-55. 

S. Elashimoto, A. Otsuki, Simultaneous determination of haloacetic acids in environmental waters usingLC-ESI-MS, J. HighResolut. Chromatogr., 21 (1998) 55. 

M. Takino, S. Daishima, K. Yamaguchi, Determination of haloacetic acids in water by LC—ESFMS using volatile ion-pairing reagents. Analyst, 125 (2000) 1097. 

Varanusupakul, P., Vora-adisak, N., Pulpoka, B. (2007). In situ derivatization and hoUow fiber membrane microextraction for gas chromatographic determination of haloacetic acids in water. Anal. Chim. Acta, 598, 82-6. 

In the disinfection process of drinking water, besides other chlorinated compounds, halogenated carboxylic acids arise. For quality control of drinking water the determination of these contaminants was established using LC-MS with a preference for ESI (cf 15.3.3.2 ESI, haloacetic acids). An application of APCI-MS for haloacetic acid analysis was reported after CE separation in a non-aqueous medium [303]. 

An electrospray ion source enlarges the range of analytes accessible to IMS, field asymmetric IMS (FAIMS), or DMS measurements, and ESI-FAIMS-MS was used in the determination of aqueous-based haloacetic acids, a class of disinfection by-products regulated by the U.S. EPA." The method of ESI-FAIMS effectively discriminated against background ions resulting from the electrospray of tap water solutions containing the haloacetic acids, and this simplified mass spectral response. The selectivity of ESI-MS was improved, and the limits of detection were lowered for six... 

In water, GC-MS is coupled to purge and trap or headspace sample preparation for the analysis of VOCs like BTEX and MTBE. Another important group of volatile analytes in water are DBFs. Attention has been directed to volatile chlorinated compounds such as trihalomethanes (THMs), as well as other semivolatile compounds such as haloacetic acids (HAAs), haloacetonitriles, haloketones, and ha-loaldehydes. The methods used to determine these compounds include GC-EI-LRMS, where a after derivatization step is necessary due to the low volatility and high polarity of these analytes. Using this technique, limits of detection were in the microgram per liter range. 

Jia, M. Wu, W.W. Yost, M.G. Chadik, P.A. Stacpoole, P.W. Henderson, G.N. Simultaneous determination of trace levels of nine haloacetic acids in biological samples as their pentafluorobenzyl derivatives by gas chromatogra-phy/tandem mass spectrometry in electron capture negative ion chemical ionization mode. Anal. Chem. 2003, 75, 4065 080. 

The advantages of IC-MS such as sensitivity and selectivity are noticeable in the analysis of drinking water (e.g., for the determination of perchlorate, the analysis of haloacetic acids or of disinfection by-products). Other fields of >pli-cation are clinical and biochemical research (determination of organic acids, amines, or sugars),pharmaceutical industry (peak identification and purity tests), petrochemical industry (determination of indicator substances), food industry, electroplating industry, analysis of hazardous substances, and environmental analysis. " ... 

US EPA (2009) Method 557 Determination of Haloacetic Acids, Bromate, and Dalapon in Water by Ion Chromatography Electrospray Ionization Tandem Mass Spectrometry. Technical Support Center, Office of Ground Water and Drinking Water, US EPA, Cincinatti, OH, USA. 

US Environmental Protection Agency (1989) Method 552 The Determination of Haloacetic Acids in Drinking Water by Liquid/Liquid Extraction and Gas Chromatography with Electron Capture Detection. US Environmental Protection Agency, Cincinnati, OH, USA (1989). 

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