Determination of Bromide in Water

Bromide is a natural element that can be found up to 65 mg/L in sea water and 0.5 mg/L in drinking water. The reasons for the increase in the amount of bromide in water can be listed as follows:

- Fertilizer contamination in groundwater
- Road salt
- Industrial waste

Ozone treatment of drinking water can produce bromate if bromide ions are present in the water. The bromate resulting from the process is classified as Group 2 (possibility of carcinogenesis) by the International Agency for Cancer (IARC).

The bromate content in drinking water may vary proportionally with some processes:
- Ozone injection rate
- Reaction time
- Bromide ion concentration in water

Control bromate concentration in ozone-treated water to 1/10 of the standard value It is important to estimate the bromide ion concentration to approximately 1 µg/L.