Abstract
AbstractAmong parameters relating to quality of water, total hardness has been investigated owed to its environmental, domestic, and industrial impact. In the present work, silver nanoparticles were greenly synthesized and used to determine total hardness of water. The results showed that in the presence of different water samples, UV–Vis absorption spectrum of AgNPs varies in intensity and location. It was observed that these changes can be related to total hardness of water samples. For this purpose, multivariate calibration method of partial least squares (PLS) was employed. A linear multivariate PLS model for total hardness in the range of 56–400 mg L−1 was constructed with root‐mean‐square error of cross validation (RMSECV) of 96.7 with three latent variables. The model was successfully used to predict total hardness of 16 bottled or natural water samples.
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