engleski

The concentration of fluorides in tap water and commercial bottled beverages

The aim of this study was to measure the concentration of fluorides in tap water in Northern Croatian town Čazma and commercially available bottled drinks. Materials and Methods Fluoride content was assessed by fluoride-selective electrode in tap water and commercial drinks from public supply. pH was assessed by hydrogen ion-selective electrode. Results Fluoride content in tap water was 0, 313 mg F-/l. In commercially available bottled drinks fluoride concentration was the highest in carbonated mineral water (0, 34 - 1, 5 mg F-/l), then in some ice tea drinks (0, 06-0, 74 mg F-/l). Non-carbonated waters, carbonated soft drinks and noncarbonated soft drinks had very low fluoride concentration and it was <0, 01 mg F-/l, 0, 02 mg F-/l and 0, 06-0, 15 mg F-/l, respectively. pH in carbonated drinks was 2, 36 -2.68 and 3, 08-3, 64 in juices. Conclusion Low concentration of fluorides in soft drinks and low pH in combination with added sugars could have cariogenic potential. The results obtained in this investigation could be used in planning preventive measures.

bottled beverages ; fluorides ; ion selective electrode ; tap water

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