@article{article15e46f52,
title   = {Green chemistry-sensitive analytical procedure for photometric determination of orthophosphate in river and tap water by use of a simple LED-based photometer},
author = {Silva, M B and Borges, S S and Perdigão, Sheila R. W and Reis, Boaventura Freire dos},
year = {2009},
journal   = {Spectroscopy Letters}
}