Comparative study of fluoride selective PVC based electrochemical sensors

Vinod Kumar Gupta; Ajay K. Jain; Manoj K. Pal; Arvind K. Bharti

doi:10.1016/j.electacta.2012.07.026

Comparative study of fluoride selective PVC based electrochemical sensors

Vinod Kumar Gupta^*
, Ajay K. Jain
, Manoj K. Pal
, Arvind K. Bharti

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Four ligands (M ₁-M ₄) have been synthesized and characterized by IR, ¹H NMR, spectroscopic investigations indicate good affinity of these ligands for fluoride anion. Different polyvinyl chloride (PVC) based membranes of ligands have been synthesized using different cationic excluders; CTAB, TDMAC, HTAB, ToMACI and plasticizers; DBBP, DBP, o-NPOE, CN, DOP, TEHB and investigated as F ^- selective sensors. The best performance is observed by the sensor with a membrane of composition (%, w/w) M ₁:PVC:o-NPOE:CTAB 3.5:30.0:63.0:3.5. The sensor generates linear potential response over a wide concentration range of 2.5 × 10 ^-7 to 1.0 × 10 ^-2 M with Nernstian slope (59.8 mV decade ^-1 of activity) over a pH range of 2.5-6.5 with a fast response time of ∼11 s. It shows good selectivity for fluoride anion (F ^-) in preference to many anions. The sensor exhibits a shelf life of two and half months and could be successfully used for the comparative determination of fluoride in different Indian tea samples. The proposed method is faster, cheaper, and more accurate in comparison to already used methods.

Original language	English
Pages (from-to)	316-325
Number of pages	10
Journal	Electrochimica Acta
Volume	80
DOIs	https://doi.org/10.1016/j.electacta.2012.07.026
State	Published - 1 Oct 2012
Externally published	Yes

Bibliographical note

Funding Information:
The authors acknowledge the support from the Ministry of Human Resource Development (MHRD), New Delhi, India for this work.

Keywords

Fluoride content
Fluoride selective PVC based sensor
H-bonding ligands

ASJC Scopus subject areas

General Chemical Engineering
Electrochemistry

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10.1016/j.electacta.2012.07.026

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@article{1ae4f92ad4a1498cb7d8262c6ea88b91,

title = "Comparative study of fluoride selective PVC based electrochemical sensors",

abstract = "Four ligands (M 1-M 4) have been synthesized and characterized by IR, 1H NMR, spectroscopic investigations indicate good affinity of these ligands for fluoride anion. Different polyvinyl chloride (PVC) based membranes of ligands have been synthesized using different cationic excluders; CTAB, TDMAC, HTAB, ToMACI and plasticizers; DBBP, DBP, o-NPOE, CN, DOP, TEHB and investigated as F - selective sensors. The best performance is observed by the sensor with a membrane of composition (\%, w/w) M 1:PVC:o-NPOE:CTAB 3.5:30.0:63.0:3.5. The sensor generates linear potential response over a wide concentration range of 2.5 × 10 -7 to 1.0 × 10 -2 M with Nernstian slope (59.8 mV decade -1 of activity) over a pH range of 2.5-6.5 with a fast response time of ∼11 s. It shows good selectivity for fluoride anion (F -) in preference to many anions. The sensor exhibits a shelf life of two and half months and could be successfully used for the comparative determination of fluoride in different Indian tea samples. The proposed method is faster, cheaper, and more accurate in comparison to already used methods.",

keywords = "Fluoride content, Fluoride selective PVC based sensor, H-bonding ligands",

author = "Gupta, \{Vinod Kumar\} and Jain, \{Ajay K.\} and Pal, \{Manoj K.\} and Bharti, \{Arvind K.\}",

note = "Funding Information: The authors acknowledge the support from the Ministry of Human Resource Development (MHRD), New Delhi, India for this work. ",

year = "2012",

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doi = "10.1016/j.electacta.2012.07.026",

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journal = "Electrochimica Acta",

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T1 - Comparative study of fluoride selective PVC based electrochemical sensors

AU - Gupta, Vinod Kumar

AU - Jain, Ajay K.

AU - Pal, Manoj K.

AU - Bharti, Arvind K.

N1 - Funding Information: The authors acknowledge the support from the Ministry of Human Resource Development (MHRD), New Delhi, India for this work.

PY - 2012/10/1

Y1 - 2012/10/1

N2 - Four ligands (M 1-M 4) have been synthesized and characterized by IR, 1H NMR, spectroscopic investigations indicate good affinity of these ligands for fluoride anion. Different polyvinyl chloride (PVC) based membranes of ligands have been synthesized using different cationic excluders; CTAB, TDMAC, HTAB, ToMACI and plasticizers; DBBP, DBP, o-NPOE, CN, DOP, TEHB and investigated as F - selective sensors. The best performance is observed by the sensor with a membrane of composition (%, w/w) M 1:PVC:o-NPOE:CTAB 3.5:30.0:63.0:3.5. The sensor generates linear potential response over a wide concentration range of 2.5 × 10 -7 to 1.0 × 10 -2 M with Nernstian slope (59.8 mV decade -1 of activity) over a pH range of 2.5-6.5 with a fast response time of ∼11 s. It shows good selectivity for fluoride anion (F -) in preference to many anions. The sensor exhibits a shelf life of two and half months and could be successfully used for the comparative determination of fluoride in different Indian tea samples. The proposed method is faster, cheaper, and more accurate in comparison to already used methods.

AB - Four ligands (M 1-M 4) have been synthesized and characterized by IR, 1H NMR, spectroscopic investigations indicate good affinity of these ligands for fluoride anion. Different polyvinyl chloride (PVC) based membranes of ligands have been synthesized using different cationic excluders; CTAB, TDMAC, HTAB, ToMACI and plasticizers; DBBP, DBP, o-NPOE, CN, DOP, TEHB and investigated as F - selective sensors. The best performance is observed by the sensor with a membrane of composition (%, w/w) M 1:PVC:o-NPOE:CTAB 3.5:30.0:63.0:3.5. The sensor generates linear potential response over a wide concentration range of 2.5 × 10 -7 to 1.0 × 10 -2 M with Nernstian slope (59.8 mV decade -1 of activity) over a pH range of 2.5-6.5 with a fast response time of ∼11 s. It shows good selectivity for fluoride anion (F -) in preference to many anions. The sensor exhibits a shelf life of two and half months and could be successfully used for the comparative determination of fluoride in different Indian tea samples. The proposed method is faster, cheaper, and more accurate in comparison to already used methods.

KW - Fluoride content

KW - Fluoride selective PVC based sensor

KW - H-bonding ligands

UR - https://www.scopus.com/pages/publications/84865253065

U2 - 10.1016/j.electacta.2012.07.026

DO - 10.1016/j.electacta.2012.07.026

M3 - Article

AN - SCOPUS:84865253065

SN - 0013-4686

VL - 80

SP - 316

EP - 325

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Comparative study of fluoride selective PVC based electrochemical sensors

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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