Abstract
The potential of near infrared (NIR) spectroscopy to determine Cl- concentration of concentrated-seawater was investigated. The NIR spectra (1100-1800nm) of concentrated-seawater with different Cl- concentrations were measured at three sample temperatures of 5°C, 25°C and 40°C. Calibration model with a temperature-correction function was developed using the partial least squares (PLS) regression method. The model obtained from the second derivative spectra gave a correlation coefficient of 0.99 and standard error of prediction of 1.66 g/l for Cl-concentrations of concentrated-seawater.
