Determination of Haloacetic Acids in Drinking Water According to EPA Method 552.3 using Hydrogen Carrier Gas
Haloacetic acids (HAAs) are known carcinogens that may occur as disinfection byproducts in drinking water. Currently five HAAs are regulated under the Stage 2 Disinfectants and Disinfection Byproducts Rule (DBPR) and occurrence of four more HAAs is being monitored under the Unregulated Contaminant Rule 4 (2018-2020) 1. Whether the targets are HAA5 or HAA9, this analysis will continue to be performed regularly in environmental labs. Helium is specified as the carrier gas in EPA method 552, commonly used for HAA analysis in drinking water. Due to the increasing cost of helium, many labs are seeking alternative and affordable carrier gases to meet the monitoring requirements for HAAs. Here, we demonstrate the performance of EPA method 552.3 for the analysis of HAA9 using Shimadzu GC-2030 with dual line micro ECD setup. Hydrogen carrier gas is tested and shown to be a cost-effective alternative carrier gas for this method.