Polypyrrole-methyl orange Raman pH sensor

Department of Food Science (UCPH FOOD)

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Polypyrrole-methyl orange Raman pH sensor. / Czaja, Tomasz; Wójcik, Kamil; Grzeszczuk, Maria; Szostak, Roman.

In: Polymers, Vol. 11, No. 4, 715, 2019.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Czaja, T, Wójcik, K, Grzeszczuk, M & Szostak, R 2019, 'Polypyrrole-methyl orange Raman pH sensor', Polymers, vol. 11, no. 4, 715. https://doi.org/10.3390/polym11040715

APA

Czaja, T., Wójcik, K., Grzeszczuk, M., & Szostak, R. (2019). Polypyrrole-methyl orange Raman pH sensor. Polymers, 11(4), [715]. https://doi.org/10.3390/polym11040715

Vancouver

Czaja T, Wójcik K, Grzeszczuk M, Szostak R. Polypyrrole-methyl orange Raman pH sensor. Polymers. 2019;11(4). 715. https://doi.org/10.3390/polym11040715

Author

Czaja, Tomasz ; Wójcik, Kamil ; Grzeszczuk, Maria ; Szostak, Roman. / Polypyrrole-methyl orange Raman pH sensor. In: Polymers. 2019 ; Vol. 11, No. 4.

Bibtex

@article{f53209a00d8941ec85e77b2e2a569541,

title = "Polypyrrole-methyl orange Raman pH sensor",

abstract = "An easy-to-prepare pH sensor based on electrochemically obtained polypyrrole doped with methyl orange ions is described. It enables the determination of a pH value in the 3-13 range for volumes below 1 μL. In a wide pH range, resonance and pre-resonance methyl orange Raman spectra, excited with the 514.5 nm line of an Ar+ laser, changed noticeably in function of H+ concentration. Two types of measurements were performed. In the first case, Raman spectra of the analyzed solutions were collected for samples placed on the sensor surface using a confocal microscope equipped with a 10x objective. Next, measurements were conducted for the same samples without the sensor. On the basis of these spectra, partial least-squares models were elaborated and validated. Relative standard errors of prediction for calibration, validation, and test samples were found to be in the 3.7%-3.9% range. An analogous model build using spectra registered without the sensor was characterized by slightly worse parameters.",

keywords = "Acid-base indicators, Multivariate analysis, PH determination, Polypyrrole, Raman sensor",

author = "Tomasz Czaja and Kamil W{\'o}jcik and Maria Grzeszczuk and Roman Szostak",

note = "Publisher Copyright: {\textcopyright} 2019 by the authors.",

year = "2019",

doi = "10.3390/polym11040715",

language = "English",

volume = "11",

journal = "Polymers",

issn = "2073-4360",

publisher = "MDPI AG",

number = "4",

}

RIS

TY - JOUR

T1 - Polypyrrole-methyl orange Raman pH sensor

AU - Czaja, Tomasz

AU - Wójcik, Kamil

AU - Grzeszczuk, Maria

AU - Szostak, Roman

PY - 2019

Y1 - 2019

N2 - An easy-to-prepare pH sensor based on electrochemically obtained polypyrrole doped with methyl orange ions is described. It enables the determination of a pH value in the 3-13 range for volumes below 1 μL. In a wide pH range, resonance and pre-resonance methyl orange Raman spectra, excited with the 514.5 nm line of an Ar+ laser, changed noticeably in function of H+ concentration. Two types of measurements were performed. In the first case, Raman spectra of the analyzed solutions were collected for samples placed on the sensor surface using a confocal microscope equipped with a 10x objective. Next, measurements were conducted for the same samples without the sensor. On the basis of these spectra, partial least-squares models were elaborated and validated. Relative standard errors of prediction for calibration, validation, and test samples were found to be in the 3.7%-3.9% range. An analogous model build using spectra registered without the sensor was characterized by slightly worse parameters.

AB - An easy-to-prepare pH sensor based on electrochemically obtained polypyrrole doped with methyl orange ions is described. It enables the determination of a pH value in the 3-13 range for volumes below 1 μL. In a wide pH range, resonance and pre-resonance methyl orange Raman spectra, excited with the 514.5 nm line of an Ar+ laser, changed noticeably in function of H+ concentration. Two types of measurements were performed. In the first case, Raman spectra of the analyzed solutions were collected for samples placed on the sensor surface using a confocal microscope equipped with a 10x objective. Next, measurements were conducted for the same samples without the sensor. On the basis of these spectra, partial least-squares models were elaborated and validated. Relative standard errors of prediction for calibration, validation, and test samples were found to be in the 3.7%-3.9% range. An analogous model build using spectra registered without the sensor was characterized by slightly worse parameters.

KW - Acid-base indicators

KW - Multivariate analysis

KW - PH determination

KW - Polypyrrole

KW - Raman sensor

U2 - 10.3390/polym11040715

DO - 10.3390/polym11040715

M3 - Journal article

AN - SCOPUS:85065925332

VL - 11

JO - Polymers

JF - Polymers

SN - 2073-4360

IS - 4

M1 - 715

ER -

ID: 382495764