Determination of bromate and chlorinated haloacetic acids in bottled drinking water with chromatographic methods

Abstract

Disinfection by-products of interest such as bromate, chlorate and chlorinated haloacetic acids in 10 representative brands of bottled drinking water were investigated with ion chromatography. With the developed method, the detection limits of the disinfection by-products were in sub-lg l À1 level. It was observed that bromate, chlorate and dichloroacetic acid could be detected in some water samples. In the bottled natural water, the concentrations for the three compounds were 0.1, 0.9 and 0.6 lg l À1 , respectively. The total concentration of disinfection by-products in the natural water sample was the highest among all the bottled drinking waters. The concentrations for the sum of disinfection by-products in the four types of bottled drinking water investigated were natural water > mineral water > spring water > purified water. The generation of disinfection by-products was much influenced by the original components and process procedure of the source water. The concentrations of bromate and chlorate in the bottled water samples hardly degraded with the increasing storage time. For dichloroacetic acid, with the prolonging of storage time, the concentration was much decreased.

Determination of haloacetic acids in water using solid‐phase extraction/microchip capillary electrophoresis with capacitively coupled contactless conductivity detection

“…A variety of sample cleanup and preconcentration processes, such as SPE and microwave evaporation [33,34], have been adopted to remove the interferences and meet the limit of detection for various analytical techniques. It has been previously suggested in the literature that detection of HAAs in potable water by CE would require SPE prior to analysis [35].…”

Direct detection of trace haloacetates in drinking water using microbore ion chromatography

“…Detection limits were reported in the sub g/L range and the technique offered excellent separation from matrix anions in drinking water supplies after cleanup with chloride removal cartridges. In a recent paper by Liu et al, levels of HAs and other oxyhalide DBPs, such as chlorate and bromate were determined in bottled drinking water [15]. Again, the detection limits were in the sub-g/L range.…”

Determination of Chloroacetic Acids in Drinking Water Using Suppressed Ion Chromatography with Solid-Phase Extraction

“…According to previous studies, a comparable level of DCA present in drinking-water samples has been quantified. 24,25 To confirm the reliability of this method, the CAAs of each concentration were added to tap water, spiked with 0.02 mg/l of MCA, 0.04 mg/l of DCA and 0.2 mg/l of TCA, and the recovery test was demonstrated. Figure 4 shows a chromatogram of the standard addition of CAAs in tap water.…”

“…[21][22][23][24][25][26] Analyzing CAAs by IC coupled with conductivity detection does not generally require a derivatization step.…”