A smartphone device could help millions of people avoid drinking water contaminated by arsenic.
Researchers have developed a biosensor that attaches to a phone and uses bacteria to detect unsafe arsenic levels.
The device, developed at the University of Edinburgh, generates easy-to-interpret patterns, similar to volume-bars, which display the level of contamination.
Researchers believe there is an urgent need to provide simple, affordable, on-site solutions for contaminated water sources.
In resource-limited countries, there is a lack of sufficiently skilled personnel and healthcare facilities to test water for contamination.
Researchers say new devices could replace existing tests, which are difficult to use, need specialist laboratory equipment and can produce toxic chemicals.
We tested our sensors with samples from wells in a village in Bangladesh. The arsenic levels reported by the sensors was consistent with lab-based standard tests, demonstrating the device’s potential as a simple low-cost-use monitoring tool.
Global health issue
The contamination of water by heavy metals is a worldwide health issue. UNICEF reports that arsenic contaminated drinking water is consumed by more than 140 million people worldwide.
Researchers tested the arsenic sensors using environment samples from affected wells in Bangladesh, which suffers from some of the world’s highest levels of arsenic-contaminated ground water.
An estimated 20 million people in Bangladesh – mostly rural poor – drink contaminated water.
Long-term exposure to unsafe levels of arsenic leads to skin lesions and cancers and is linked to 20 per cent of all deaths in the worst-affected regions.
Researchers developed the biosensor by manipulating the genetic code of the bacteria Escherichia coli. They added genetic components to act as amplifiers when arsenic is detected.
Water samples were fed into a plastic device containing bacteria suspended in a gel. This produced fluorescent proteins that were visible in the presence of arsenic.
Researchers believe that the approach could be used to detect other environmental toxins, diagnose diseases and locate landmines.
Learn more: Smartphone test spots poisoned water risk
The Latest on: Biosensor
via Google News
The Latest on: Biosensor
- As Biosensors Grow in Sophistication, So Does Their Market Valueon October 7, 2020 at 8:55 am
According to a report by Emergen Research, the global biosensor market is expected to grow annually by 7.3 percent between 2019 and 2027—from a value of $19.19 billion to $33.85 billion. A similar ...
- Biosensor Illuminates in Real Time How Viruses Attack Hostson October 1, 2020 at 6:20 am
The CSU researchers invented a biosensor that lights up blue when viral translation is happening, and green when normal host translation is happening, in single living cells. This design allows them ...
- SD Biosensor COVID-19 antigen test fails DOH evaluationon September 30, 2020 at 4:12 am
South Korean SD Biosensor COVID-19 antigen test has failed the Department of Health’s evaluation because it fell short of World Health Organization (WHO) standards, Health Undersecretary Maria Rosario ...
- Biosensor Detection Market Brief Analysis by Top Key Players | Abbott,Medtronic,F. Hoffman-La Roche,Siemens,LifeScan,LifeSensors,Nova Biomedicalon September 29, 2020 at 8:33 am
A new report, Global Biosensor Detection Market provides an overview of recent factors enabling growth in the global Biosensor Detection industry. According to the report, recent innovations have ...
- 120 Million Coronavirus Tests to Be Sold to Low- and Middle-Income Countries at Steep Discounton September 29, 2020 at 7:26 am
The tests will be supplied by U.S.-based Abbott (NYSE:ABT) and South Korea's SD Biosensor, over a period of six months, and will cost the purchasing nations $5 or less apiece. The plan is the ...
- Aid weight loss and improve athletic performance with Supersapienson September 28, 2020 at 8:15 am
Even in the rather oversaturated fitness wearable market, Supersapiens' ecosystem, powered by the Abbott Libre Sense biosensor, offers something new and unique. Supersapiens created a system that ...
- Colorado Varsity Researchers Develop Biosensor That Uses Light to Track Virus in Host Cellson September 28, 2020 at 5:45 am
The biosensor will emit blue light when the viral translation will happen and will emit green light when normal host translation is happening.
- Color-coded biosensor illuminates in real time how viruses attack hostson September 25, 2020 at 11:43 am
The CSU researchers invented a biosensor that lights up blue when viral translation is happening, and green when normal host translation is happening, in single living cells. This design allows ...
via Bing News