Now ordinary smartphone can be used for water quality analysis.
Researchers from Edinburgh University have developed a biosensor that connects to your phone and uses bacteria to detect dangerous levels of arsenic, writes Nature Chemical Biology.
The developers believe that there is an urgent need to provide simple and affordable solutions for water analysis for harmful substances.
In addition, in countries with limited resources there is a lack of sufficient qualified staff and medical facilities to check the water pollution.
The researchers argue that new devices can replace existing tests that are complex to use, require special laboratory equipment and can produce toxic chemicals.
Water pollution by heavy metals is a global public health problem. UNICEF reports that arsenic contaminated drinking water consume more than 140 million people worldwide.
In their study, the researchers tested the sensors of arsenic, taking environmental samples from wells in Bangladesh, which is notorious to the world’s highest levels of arsenic in groundwater.
Long-term exposure to high levels of arsenic causes skin lesions and cancers and is associated with 20 % of all deaths in the most affected regions.
Researchers have developed a biosensor by manipulating the genetic code of the bacteria Escherichia coli. They added genetic components as amplifiers upon detection of arsenic.
Water samples were submitted to plastic device containing bacteria. This led to the formation of fluorescent proteins that occur in the presence of arsenic.
Researchers believe that this approach could be used to detect other environmental toxins, diagnosis, and localization of landmines.
Recall how gadgets affect children’s health.
As reported by the portal “Znayu” that radiation from smartphones provokes development of oncological diseases of the heart, brain and adrenals, but there are nuances.
Also “Znayu” wrote which pose a danger smartphones