Sensors 2008, 8(7), 4330-4349; doi:10.3390/s8074330
Article

Electrochemical Sensing and Assessment of Parabens in Hydro- Alcoholic Solutions and Water Using a Boron-Doped Diamond Electrode

1,* email, 1email, 2email, 1, 3email and 1email
Received: 4 July 2008; in revised form: 17 July 2008 / Accepted: 17 July 2008 / Published: 25 July 2008
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: In this paper, the electrochemical behaviour of several parabens preservatives, i.e. esters of p-hydroxybenzoic acid, methyl-, ethyl- and propyl-4-hydroxybenzoates as methyl-, ethyl- and propyl-parabens (MB, EB, and PB), has been investigated at a commercial boron-doped diamond electrode (BDDE), especially in the anodic potential range, in both hydro-alcoholic and aqueous media. The cyclic voltammetric and chronoamperometric measurements yielded calibration plots with very good linearity (R2 between 0.990 and 0.998) and high sensitivity, useful for detection and analytical applications. The determination of the characteristics of individual compounds, of an “overall paraben index”, the assessment of the stability and the saturation solubility in water, and the amperometric sensing and determination in double distilled, tap and river water matrix of the relatively slightly soluble investigated parabens have been carried out using electrochemical alternative. Estimated water solubility was correlated with the octanol-water partition coefficient. Several ideas regarding stability and persistence of the presumptive eco-toxic investigated preservatives in the environment or water systems have been adjacently discussed.
Keywords: parabens; boron-doped diamond electrode; cyclic voltammetry; chronoamperometry; water solubility; overall index
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MDPI and ACS Style

Radovan, C.; Cinghită, D.; Manea, F.; Mincea, M.; Cofan, C.; Ostafe, V. Electrochemical Sensing and Assessment of Parabens in Hydro- Alcoholic Solutions and Water Using a Boron-Doped Diamond Electrode. Sensors 2008, 8, 4330-4349.

AMA Style

Radovan C, Cinghită D, Manea F, Mincea M, Cofan C, Ostafe V. Electrochemical Sensing and Assessment of Parabens in Hydro- Alcoholic Solutions and Water Using a Boron-Doped Diamond Electrode. Sensors. 2008; 8(7):4330-4349.

Chicago/Turabian Style

Radovan, Ciprian; Cinghită, Dan; Manea, Florica; Mincea, Manuela; Cofan, Codruta; Ostafe, Vasile. 2008. "Electrochemical Sensing and Assessment of Parabens in Hydro- Alcoholic Solutions and Water Using a Boron-Doped Diamond Electrode." Sensors 8, no. 7: 4330-4349.


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