Bromate and bromoacetic acids (i.e., monobromo-, dibromo-, tribromo-, bromochloro-,
bromodichloro-, dibromochloroacteic acid) are disinfection byproducts in drinking water. This
paper describes a new method for their simultaneous determination in water samples by
anion-exchange liquid chromatography with highly sensitive and specific inductively coupled
plasma mass spectrometry (ICP-MS) detection. Factors affecting the chromatographic
separation and ICP-MS detection performance were systematically optimized. The separation
of the target analytes was achieved on a Dionex IonPac AS11-HC column with 100 mM
ammonium nitrate as eluent. The detection limits (3f, sample injection volume 500 uL)
obtained with the LC-ICP-MS were within the range of 0.13-0.36 ug L<sup>-1</sup>. The probable masking
of the peak of bromochloroacetic acid by that of bromide at relatively high levels was
eliminated by appropriate sample pretreatment with Dionex OnGuard Ag and H cartridges.
Sample matrix did not show significant influence on the analysis. The method has been applied
to analysis of various waters with good precisions and spiked recoveries of 80.8-113.8%. Includes 46 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 360 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 11 |
| Published : | 11/02/2003 |
