Groundwater contaminated with arsenic has led to an epidemic of arsenic poisoning in parts of Bangladesh and India. Scientists in China have developed a sensor to detect arsenic quickly and accurately in water.
Pei Zhou at Shanghai Jiao Tong University and colleagues’ sensor detects arsenic using an arsenic-binding aptamer, gold nanoparticles and a cationic surfactant.
Read the full article at Chemistry World.
Ultrasensitive aptamer biosensor for arsenic(III) detection in aqueous solution based on surfactant-induced aggregation of gold nanoparticles
Yuangen Wu, Le Liu, Shenshan Zhan, Faze Wang and Pei Zhou
Analyst, 2012, 137, 4171-4178