This paper presents the review on different concepts of fluoride detection techniques and technologies in water. At high concentration Fluoride is toxic to humans. When humans are exposed to fluoride-containing water, they can suffer from health problems, such as dental disease. Drinking water is the most consumed beverages. For humans beverages aresignificant sources of fluorides. Consistent e...

We describe an integrated automated system for the atomic absorption spectrophotometer. The system makes use of a light-dependent resistor to detect the presence of a marker ion which is present along with the sample ion in the flame. An electronic circuit has been developed which enables the marker ion to trigger the read signal of the spectrophotometer. The system has been tested by determini...