Abstract
Bacterial contamination of drinking water is a worldwide problem that each year causes millions of people to become sick and possibly face hospitalization and even death. Yet tests that could alert people to dangerous bacteria in drinking water remain difficult to carry out, in both developed and resource-limited countries. Currently, scientists use immunoassays or try to grow bacteria collected from water samples to test for contamination. These approaches are time-consuming and require preparation of discrete samples and transport to laboratories for analysis by trained technicians. Nanotechnologist Ortal Schwartz and mechanical engineer Moran Bercovici at Technion—Israel Institute of Technology have developed a method that could sidestep some of these problems (Anal. Chem. 2014, DOI: 10.1021/ac5017776). It uses microfluidic chips and the charge-based separation technique isotachophoresis to measure bacteria in water continuously, instead of in discrete samples, without the need for sample preparation o...
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