Team:Bolivia

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Arsemaphore


Golden medal





Nominations

Heavy metal poisoning has become a serious problem worldwide. Heavy metals are high atomic weight elements that can be accumulated in different ecosystems at dangerous levels, resulting in the contamination of the environment.

Arsenic and high concentrations of metals can affect the quality of the surrounding soils, rivers, aquifers, and material abandoned along these rivers from former mining operations. The geological characteristics of the Bolivian altiplano influence the physicochemical composition of the water, resulting in the accumulation of sulfur, boron, arsenic and others. In this way, different human populations in Bolivia are exposed to arsenic causing neurological disorders, respiratory and cardiovascular diseases, as these metals affect the health altering normal human metabolic and biochemical function

Arsenic affects about
5 MILLION PEOPLE WORLDWIDE
In certain regions of the country,
it is present up to
25 TIMES MORE THAN THE RECOMMENDED BY THE WHO AND THE BOLIVIAN STANDARD

Solution

After identifying such a dangerous problem for humans, team Bolivia decided to design, build, and validate a bacterial biosensor that allows the quantification of arsenic, having the minimum specifications of good performance: short response time, detection of concentrations as low as 10 ppb, and the specificity for arsenic. In addition, our biosensor offers an easy result interpretation by generating a color signal visible to the naked eye.