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۱Determination of Cr3+ Ions in Biological and Environmental Samples by a Chromium(III) Polymeric Membrane Sensor
اطلاعات انتشار: دوازدهمین کنگره ملی مهندسی شیمی ایران، سال
تعداد صفحات: ۱۲
A highly Cr3+–selective ionophore, based on 5–Amino–1–phenyl–1H–pyrazole–4–carboxamide (APC) as a carrier, was synthesized in order to obtain a Cr3+ ion–selective electrode. The demonstrated characteristics of the sensor included a linear dynamic range between 1.0 × 10–6 and 1.0 × 10–1 M with a near Nernstian slope of 19.6 ± 0.4 mV per decade, a detection limit of 5.3 × 10–7 M, a very good selectivity for Cr3+ over other cations in a wide pH range (3.2–6.3). As a result, the developed sensor provided satisfactory results after its application in the Cr3+ determination in biological samples (urine and synthetic plasma) and also in wastewater of chromium electroplating industries .<\div>
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