Thermo Scientific HAA9 Disinfection By-Products (HAAs) Application Workflow

Municipal utility laboratories, contract testing laboratories, and local or regional governing agencies performing water testing can now benefit from an application workflow using ion chromatography tandem mass spectrometry (IC-MS/MS) to achieve haloacetic acid (HAA) analysis in drinking water in accordance with the US Environmental Protection Agency Method 557 (EPA 557).

The Thermo Scientific Disinfection By-Products (HAAs) Application Workflow uses the Thermo Scientific Dionex ICS-6000 HPIC system and a Thermo Scientific Dionex IonPac AS31 column, coupled with triple quadrupole mass spectrometry, to deliver a fast, sensitive and simple method that has been developed for direct analysis of nine HAAs, bromate and dalapon in drinking water samples. The robust and validated workflow is designed to enable method precision and accuracy, following the EPA 557 regulation, which is paramount to testing drinking water safety. To minimise system downtime, trained field service personnel can provide after-sales support for the complete IC and MS/MS system as required.

The validated IC-MS/MS workflow enables reproducible quantitation of target HAAs in drinking water per EPA method 557, determining all relevant analytes in water samples in 35 min. Separations of nine HAAs, bromate and dalapon from common interference anions such as chloride, sulfate and carbonate are enabled by the selectivity of the Dionex IonPac AS31 column. The MS detection method provides high sensitivity and makes it possible to directly inject drinking water samples, thereby eliminating the complexity and variabilities of sample preparation. These method improvements allow time savings for water testing laboratories and provide results that enable laboratories to rapidly confirm the safety of drinking water.