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Analytical method for sulphate and phosphate ion content in drinking water

Dear All,

Does anyone know the method to analyze sulphate and phosphate ion content in drinking water? My lab can only support a simple titration method. And I have one spectophotometer.

Thank you,

Tanatip Chanprung
- Bangkok, Thailand

Mr Tanatip Chanprung,

Kits for spectrophotometry are widely available. Phosphate kit is based on reaction of phosphomolibdic reactant with phosphates, while sulphates are detected with a reactant based on Barium Chloride. You can build up your plot absorbance/amount at the absorbance maximum (suggested in the kit leaflet). A typical kits producer is Merck, if available in your Country.

Let me know if and...good luck!

Francesco Cicchetti
- Sulmona, Italy

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