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Novel device to detect low fluoride in water

IANS  |  London 

Researchers have built a new device to accurately measure concentrations using only a few drops of water with even low contamination, finds a new study.

In India, low concentration of - below 1.5 mg/litre - is used to prevent tooth decay and strengthening of bones. But if it touches above 2 ppm it could cause serious health issues, like dental and bone disease, especially in children and developing foetuses.

That's where the device - SION-105 - comes in. It's portable, considerably cheaper than ones in use now, and can be used on-site by anyone. In addition, it is luminescent by default, but darkens when it encounters ions.

Measuring fluoride at low concentrations with sufficient accuracy is expensive and requires a

Kyriakos Stylianou at EPFL Valais Wallis in said SION-105 detects fluorides by adding only a few droplets of water and by monitoring the colour change of the (MOFs).

The study was published in the Journal of the

Adding fluoride to water has been a common practice in many countries, including the US, Australia, Brazil, Malaysia, and Vietnam, especially in low concentrations - below 1.5 mg/litre.

The (WHO) has set 1.5 mg/litre as the maximum limit for fluoride in drinking water.



(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)

First Published: Tue, February 12 2019. 15:44 IST