Paint - lead

Although the global ban on leaded gasoline has markedly reduced lead poisoning, many other environmental sources of lead exposure, such as paint, pipes, mines, and recycling sites remain.

Existing methods to identify these sources are either costly or unreliable. We report here a new, sensitive, and inexpensive lead detection method that relies on the formation of a perovskite semiconductor. The method only requires spraying the material of interest with methylammonium bromide and observing whether photoluminesence occurs under UV light to indicate the presence of lead. The method detects as little as 1.0 ng/mm2 of lead by the naked eye and 50 pg/mm2 using a digital photo camera. We exposed more than 50 different materials to our reagent and found no false negatives or false positives. The method readily detects lead in soil, paint, glazing, cables, glass, plastics, and dust and could be widely used for testing the environment and preventing lead poisoning.

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Over de aflevering
Deze week werden de winnaars van de Amsterdam Science Innovation Award bekend gemaakt. Eén van de kanshebbers is Lukas Helmbrecht, van de UvA en AMOLF. Hij heeft iets ontwikkeld waarmee loodvervuiling heel makkelijk en goedkoop gedetecteerd kan worden.

We bespreken hoe groot het probleem met loodvervuiling is en welke oplossing hij onder de naam Lumetallix heeft ontwikkeld.

Lees hier meer over de Amsterdam Science Innovation Award

Luister de volledige aflevering op of luister hier: