Next Article in Journal
Synthesis of Brushite Particles in Reverse Microemulsions of the Biosurfactant Surfactin
Previous Article in Journal
Molecular Characterization and Expression Pattern of Tripartite Motif Protein 39 in Gallus gallus with a Complete PRY/SPRY Domain
Article Menu

Export Article

Open AccessArticle
Int. J. Mol. Sci. 2011, 12(6), 3810-3820; doi:10.3390/ijms12063810

Screen-Printed Carbon Electrodes Modified with Cobalt Phthalocyanine for Selective Sulfur Detection in Cosmetic Products

Department of Cosmetic Science, Providence University 200 Chungchi Rd., Taichung 43301, Taiwan
Department of Safety, Health and Environmental Engineering, Hung Kuang University 34 Chungchi Rd., Taichung 43302, Taiwan
Author to whom correspondence should be addressed.
Received: 13 April 2011 / Revised: 31 May 2011 / Accepted: 2 June 2011 / Published: 9 June 2011
(This article belongs to the Section Biomaterial Sciences)
View Full-Text   |   Download PDF [542 KB, uploaded 19 June 2014]   |  


Cobalt phthalocyanine (CoPc) films were deposited on the surface of a screen-printed carbon electrode using a simple drop coating method. The cyclic voltammogram of the resulting CoPc modified screen-printed electrode (CoPc/SPE) prepared under optimum conditions shows a well-behaved redox couple due to the (CoI/CoII) system. The CoPc/SPE surface demonstrates excellent electrochemical activity towards the oxidation of sulfur in a 0.01 mol·L−1 NaOH. A linear calibration curve with the detection limit (DL, S/N = 3) of 0.325 mg·L−1 was achieved by CoPc/SPE coupled with flow injection analysis of the sulfur concentration ranging from 4 to 1120 mg·L−1. The precision of the system response was evaluated (3.60% and 3.52% RSD for 12 repeated injections), in the range of 64 and 480 mg·L−1 sulfur. The applicability of the method was successfully demonstrated in a real sample analysis of sulfur in anti-acne creams, and good recovery was obtained. The CoPc/SPE displayed several advantages in sulfur determination including easy fabrication, high stability, and low cost. View Full-Text
Keywords: sulfur; cosmetics; cobalt phthalocyanine; screen-printed carbon electrode sulfur; cosmetics; cobalt phthalocyanine; screen-printed carbon electrode

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Chen, P.-Y.; Luo, C.-H.; Chen, M.-C.; Tsai, F.-J.; Chang, N.-F.; Shih, Y. Screen-Printed Carbon Electrodes Modified with Cobalt Phthalocyanine for Selective Sulfur Detection in Cosmetic Products. Int. J. Mol. Sci. 2011, 12, 3810-3820.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Int. J. Mol. Sci. EISSN 1422-0067 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top