TY - JOUR
T1 - Molecularly imprinted polymer of p-amino thiophenol for a 3-monochloropropane-1,2-diol impedance-based sensor
AU - Banurea, Imia R.
AU - Sanjaya, Afiten R.
AU - Nizardo, Noverra M.
AU - Ivandini, Tribidasari A.
N1 - Funding Information:
The authors would like to sincerely thank the Faculty of Mathematics and Natural Sciences, Universitas Indonesia for supporting the research via Hibah Riset FMIPA UI 2021 (Grant No. NKB-020/UN2.F3/HKP.05.00/2021).
Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/6/1
Y1 - 2023/6/1
N2 - A sensor of 3-monochloropropane-1,2-diol (3-MCPD) has been developed using molecularly imprinted polymer (MIP) technique. The sensor was prepared from graphite pencil electrodes modified with gold particles and polymer of p-amino thiophenol as the membrane to form a self-assembled MIP with 3-MCPD. The signal of the sensor was obtained using electrochemical impedance spectroscopy calculated by the difference resistances before and after interaction between the sensor and 3-MCPD. A linear calibration curve was obtained in the 3-MCPD concentration range 0.12–1.11 ppm. The estimated limits of detection and quantification of 0.12 ppm and 0.39 ppm, respectively, could be achieved. Good stability of the responses was shown with a relative standard deviation of 4.44% (n = 9) for signals repeatability in the same day and 4.20% in the different days, while it was 5.62% (n = 7) for reproducibility. The developed sensor also showed excellent selectivity for the interferences of 2-MCPD, glycerol, palmitic acid, vitamin A, and β-carotene. Furthermore, an example application of the sensor for the detection of 3-MCPD in real cooking oil samples was also successfully demonstrated, indicating the developed sensor is promising for real applications of 3-MCPD detection.
AB - A sensor of 3-monochloropropane-1,2-diol (3-MCPD) has been developed using molecularly imprinted polymer (MIP) technique. The sensor was prepared from graphite pencil electrodes modified with gold particles and polymer of p-amino thiophenol as the membrane to form a self-assembled MIP with 3-MCPD. The signal of the sensor was obtained using electrochemical impedance spectroscopy calculated by the difference resistances before and after interaction between the sensor and 3-MCPD. A linear calibration curve was obtained in the 3-MCPD concentration range 0.12–1.11 ppm. The estimated limits of detection and quantification of 0.12 ppm and 0.39 ppm, respectively, could be achieved. Good stability of the responses was shown with a relative standard deviation of 4.44% (n = 9) for signals repeatability in the same day and 4.20% in the different days, while it was 5.62% (n = 7) for reproducibility. The developed sensor also showed excellent selectivity for the interferences of 2-MCPD, glycerol, palmitic acid, vitamin A, and β-carotene. Furthermore, an example application of the sensor for the detection of 3-MCPD in real cooking oil samples was also successfully demonstrated, indicating the developed sensor is promising for real applications of 3-MCPD detection.
KW - 3-monochloropropane-1,2-diol
KW - Electrochemical impedance spectroscopy
KW - Molecularly imprinted polymer
KW - P-amino thiophenol
KW - Pencil graphite electrode
UR - http://www.scopus.com/inward/record.url?scp=85150462953&partnerID=8YFLogxK
U2 - 10.1016/j.matchemphys.2023.127613
DO - 10.1016/j.matchemphys.2023.127613
M3 - Article
AN - SCOPUS:85150462953
SN - 0254-0584
VL - 301
JO - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
M1 - 127613
ER -