Abstract
A sensitive optical sensor for determining Hg2+ concentration has been prepared by incorporating the indicator dye, diphenylcarbazone, into cellulose acetate polymer film. The sensor was fabricated by binding diphenylcarbazone to a cellulose acetate film that had been previously subjected to exhaustive base hydrolysis. The method is easy to perform and uses acetyl cellulose as a carrier. The results showed that the sensor has the ability to determine the Hg2+ concentration with ±6% error. Also, the adsorption capacity was 3.41 × 10-3 mmol/g.
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