Potentiometric measurements were carried out: with a wire electrode coated
with a mixture of polyaniline and polystyrene. The salinity in water is obt
ained by measuring the potential difference between the coated wire electro
de and an Ag\AgCl, saturated KCl reference electrode. The salinity of a sam
ple is obtained by the interpolation of its potential in the calibration cu
rve obtained with KCl solutions of known concentrations. The results indica
ted that it is possible to measure the salinity in sea water, brackish wate
r and drinking water in the range of 0.010 to 75 parts per thousand. (C) 19
99 Elsevier Science S.A. All rights reserved.