PVC-Based Cobalt and Manganese Phthalocyanine Coated Graphite Electrodes for Determination of Thiocyanate
作者:
Mohammad K. Amini,
Said Shahrokhian,
Shahram Tangestaninejad,
期刊:
Analytical Letters
(Taylor Available online 1999)
卷期:
Volume 32,
issue 14
页码: 2737-2750
ISSN:0003-2719
年代: 1999
DOI:10.1080/00032719908543002
出版商: Taylor & Francis Group
关键词: Potentiometry;Ionophores;Thiocyanate selective electrode;Cobalt phthalocyanine;Manganese phthalocyanine;PVC;Graphite rods
数据来源: Taylor
摘要:
Thiocyanate selective electrodes were prepared by incorporating cobalt and manganese phthalocyanines into plasticized ploy(vinyl chloride) membranes which were directly coated on the surface of graphite electrodes. A calibration plot with Nernstian slope for thiocyanate was observed over a linear range of five decades of concentration (1x10−6-1x10−M). The electrode has a fast response time, very low detection limit (5x10−7M thiocyanate), is easy to prepare, and could be used for over a month. The proposed sensor revealed good selectivity for thiocyanate over several anions and could be used over a wide pH range. Applications of the electrode to the potentiometric titration of silver ion with thiocyanate and determination of thiocyanate in urine samples are reported.
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