Rapid detection of 2, 3, 3′, 4, 4′-pentachlorinated biphenyls by silver nanorods-enhanced Raman spectroscopy

Fast detection of persistent organic pollutants in environment at the trace amount is important but difficult. We demonstrate here a simple method to detect 2, 3, 3′, 4, 4′- pentachlorinated biphenyl by the surface-enhanced Raman scattering technique, using aligned Ag nanorods as substrates. By this way 2, 3, 3′, 4, 4′- pentachlorinated biphenyl dissolved in acetone can be detected to a concentration of 10−8 mol/L, in tens of seconds. This study provides possibly a fast, simple and sensitive technique for the detection of those organic hazardous not soluble in water.