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Strip search for mercury

A strip test for mercury in water samples offers results comparable with spectroscopic measurements, according to researchers in China. A Ningbo U team has developed a test strip based on functionalised gold nanoparticles that cause a colour change if mercury is present in a sample at just 3 nanomolar concentrations, lower than the US EPA’s drinking water limit (10 nM). Highly sensitive and highly selective for the hazardous metal.

More details this week in my SpectroscopyNOW column.

Freelance science journalist for 0.25 centuries. Author of the amazon bestseller Deceived Wisdom. Sharp-shooting photographer and wannabe rock god.