Tuesday January 21, 2020

New Device to Detect Low Fluoride in Water

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

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Orcas
This September 2015 photo from NOAA Fisheries shows an adult female orca and her calf, in Washington state's Puget Sound. Researchers reported Jan. 11, 2019, that there's a new calf among killer whales that live in the waters between Washington state and Canada. VOA

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

In India, low concentration of fluoride – 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 fluoride ions.

Measuring fluoride at low concentrations with sufficient accuracy is expensive and requires a well-equipped chemical lab.

australia, underwater
A man snorkels in an area called the “Coral Gardens” near Lady Elliot Island, on the Great Barrier Reef, off Queensland, Australia, June 11, 2015. Scientists recently found similar-looking coral reefs in much deeper water off Tasmania. VOA

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

The study was published in the Journal of the American Chemical Society.

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

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

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Upcoming Huawei Smartphone ‘P40 Pro’ May Have 52MP Rear Camera Design By Sony

An alleged leaked image for a protective case shared recently by prominent leaker OnLeaks claims that the P40 Pro may arrive with five rear cameras

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Huawei
Additionally, Huawei recently launched its latest Kirin 990 (5G) flagship chipset with an integrated 5G modem at the IFA 2019. Wikimedia Commons

Upcoming smartphone of Huawei named P40 Pro is expected to launch in March 2020 and now a new report claims that the device may be equipped with a 52MP main camera design by Sony.

This sensor will feature “16-in-1” technology and it is rumoured that the company will put the “Quad Quad Bayer” sensor which will perform 4-in-1 conversions to reach the 16-in-1 stage. This will only be used for videos and photos shot under very dark conditions, news portal GSMArena reported recently.

An alleged leaked image for a protective case shared recently by prominent leaker OnLeaks claims that the P40 Pro may arrive with five rear cameras.

The five snappers on its back would feature a main wide-angle lens, a cine lens, a ToF (Time of Flight) sensor, a periscope lens with support for a 10x optical zoom, and either a telephoto lens with up to 9x optical zoom or an ultrawide lens, GizmoChina reported.

The P40 Pro is rumoured to arrive with a screen measuring 6.5-inch to 6.7-inch and will sport rectangular camera modules at the back panel. Richard Yu, the head of Huawei’s consumer business recently revealed that the P40 series smartphones would run its own HarmonyOS operating system instead of Google’s Android.

Huawei
Upcoming smartphone of Huawei named P40 Pro is expected to launch in March 2020 and now a new report claims that the device may be equipped with a 52MP main camera design by Sony. Wikimedia Commons

He also confirmed that the HarmonyOS is ready for smartphones but the company is waiting to see if the situation with the US changes. In addition, Yu also revealed that Huawei has been considering selling its Kirin processors to other companies in industries such as the Internet of Things (IoT) and robotics.

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The company recently launched its latest Kirin 990 (5G) flagship chipset with an integrated 5G modem at the IFA 2019. (IANS)