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Displaying 1-5 of 7 results for Tag: HAA
AN454: Analysis of Haloacetic Acids in Drinking Water by IC-MS/MSInstrument Type: ICMS
Haloacetic acids (HAA) are disinfection byproducts when water is chlorinated to remove microbial content. The chlorine reacts with naturally occurring organic and inorganic matter in the water, such as decaying vegetation, to produce by-products that include HAAs. Five of the nine HAA species are currently regulated by the EPA as there might be an increased risk of cancer associated with long-term consumption of water containing levels of HAAs that exceed 0.6 mg/L. We describe an IC-MSMS method that provides separation of all nine HAAs addressed in the EPA methods (552.1, 552.2, and 552.3).
Quantitative Determination of Disinfection Byproduct Haloacetic Acids in Drinking Water using a New Mixed-Mode column and Liquid Chromatography Tandem MS Haloacetic AcidsInstrument Type: LCMSMS
Haloacetic acids (HAAs) occur in drinking water during the disinfection process and have been regulated by the US EPA as HAA5. Haloacetic acids have been linked to potential threats to human health thus monitoring of their presence is of critical importance to public health. We describe a sensitive LC-MS/MS method for direct analysis of three regulated chlorinated HAAs at trace level in drinking water without sample derivatization, concentration, or ion paring agents. the mixed mode column was developed specifically for the regulated HAA's in Japan.
EPA Method 557 - Analysis of Haloacetic Acids, Dalapon, and Bromate in Drinking Water by IC-MS/MSInstrument Type: ICMS
Haloacetic acids (HAAs) are formed as disinfection byproducts when water is chlorinated to kill bacteria. Chlorine reacts with naturally occurring organic and inorganic matter in the water, such as decaying vegetation, to produce disinfection by-products (DBPs) that include HAAs. Of the nine species of HAAs, five are currently regulated by the U.S. Environmental Protection Agency (EPA). We demonstrate a simple and sensitive IC-MS/MS method for analyzing haloacetic acids, the pesticide dalapon, and bromate in water using EPA Method 557.
Quantification of Haloacetic Acids in Tap Water Using a Dedicated HAA LC Column with LC-MS/MS DetectionInstrument Type: LCMSMS
In April 2012, methods provided by the Japanese Ministry of Health, Welfare and Labour based on provisions in the Water Quality Standards Ordinance (Ministry of Health, Welfare and Labour, Notification 261, July 2003) were revised, and the inspection method for haloacetic acids (HAAs) was expanded to include an analysis method using liquid chromatography paired with mass spectrometry (LC/MS or LC-MS/MS) as an alternative to gas chromatography with mass spectrometry (GC/MS). We describe an LC-MS/MS method for measuring haloacetic acids in tap water using a dedicated HPLC column.
AN630: EPA Method 557 – Analysis of Haloacetic Acids, Dalapon, and Bromate in Drinking Water by IC-MS/MS: HAA9Instrument Type: ICMS
Haloacetic acids (HAAs) are formed as disinfection byproducts when municipal chlorination processes react with naturally occurring brominated and chlorinated species. Five HAAs are currently regulated, whereas four others may be included in future regulations. Here we demonstrate the determinations of 0.02 to 0.1 ng/L (ppt) HAA9 concentrations using ion chromatography separations combined with tandem MS on a triple quadrupole mass spectrometry.