Bisphenol A (BPA) is important
matter in chemical industry used in the produce of some food contact materials
such as plastics, adhesives and coatings. But BPA has also some toxic effects
for human endocrine system and environment. Therefore, novel sensitive and
selective methods for determination the level of BPA in environmental, medical
samples and foods new measurement methods need to be developed. A novel, sensitive,
simple and cheap electrochemical sensor based on poly (p-aminobenzoic acid)
p(p-ABA) modified gold electrode (AuE) was developed for the measurement of BPA
in water samples. Firstly, AuEs were modified with polymerization of the
p-amino benzoic acid as a monomer by using bulk electrolysis in 0.01 M HCl at
-250 mV. Then the electrochemical oxidation of BPA carried out in 0.1 M
phosphate buffer solution (PBS) pH=6 on p(p-ABA) modified AuE. The effects of
various electrochemical parameters, such as scan rate, electroyte type and
electrolyte pH were examined. Differential pulse voltammetry (DPV) was used as
an ideal analytical method for the qualitative and quantitative detect of BPA
in water samples. The developed electrochemical sensor has linear signal to BPA
in the range of 2–100 μM. Prepared electrode was showed the limit of detection
(LOD) of 0.26 µM and R2 of 0.999. Additionally, the developed sensor
s used to determination the BPA in bottled drinking water sold in Turkish
markets by using DPV, and obtains satisfactory results. The recovery values of the bottle water samples in the freezer, at room
temperature and in the car were calculated as 102.22%, 104.68% and 106.06%
respectively.
Primary Language | English |
---|---|
Subjects | Engineering |
Journal Section | Chemistry |
Authors | |
Publication Date | June 1, 2019 |
Published in Issue | Year 2019 Volume: 32 Issue: 2 |