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Montira Phaphan. Iron(III)-selective optical sensor based on plasticized membrane incorporating ethyl protocatechuate compared with naked-eye screening method. (). King Mongkut's University of Technology North Bangkok. Central Library. : , 2020.
Iron(III)-selective optical sensor based on plasticized membrane incorporating ethyl protocatechuate compared with naked-eye screening method
Name: Phetlada Kunthadee
Organization :
Maejo University. Faculty of Science
Email :
phetk@yahoo.com, phetlada@mju.ac.th
Name: Montira Phaphan
Organization :
Maejo University. Faculty of Science
ThaSH:
Membranes (Technology)
ThaSH:
Electrochemical sensors
ThaSH:
Optical detectors
Abstract:
A mold-casting membrane was previously reported as ion-selective electrochemical sensor. Herein we have developed UV-Visible optical sensor using a mold-casting plasticized membrane containing ethyl protocatechuate (EP) as a selective ligand for the detection of iron(III), compared with naked-eye screening method, to obtain a lower limit of detection (LOD) down to sub-micromolar. A solution of EP in tetrahydrofuran was directly mixed with target ion at a concentration of 10-3 M for naked-eye screening, and was selective to iron(III) over other cations considering from a visual color change from pale yellow to green due to a complex formation which absorbs a visible light at 669 nm. Linear concentration range was 3x10-4 to 8x10-4 M with the LOD of 8.25x10-5 M. EP-based membrane fabricated in the presence of potassium tetrakis(p-chlorophenyl) borate showed a good selectivity towards iron(III) which was confirmed by FT-IR. The optimum height of membrane in quartz cell was 1.50 cm above bottom. The working concentration range was 9x10-5 to 5x10-4 M and the lower LOD was obtained after conditioning the membrane in iron(III) solution for 1.5 hours. Optimized membrane sensors were applied for the determination of iron(III) in reservoir water and ground water with acceptable percentage recoveries of 100-105 percent.
King Mongkut's University of Technology North Bangkok. Central Library
Address:
BANGKOK
Email:
library@kmutnb.ac.th
Created:
2020
Modified:
2024-10-09
Issued:
2024-10-09
บทความ/Article
application/pdf
BibliograpyCitation :
In the Chemical Society of Thailand under the Patronage of Professor Dr. HRH Princess Chulabhorn in association, Thammasat University Faculty of Science and Technology. The Pure and Applied Chemistry International Conference 2020 (PACCON 2020) (IC1-5). Bangkok : Thammasat University
eng
©copyrights King Mongkut's University of Technology North Bangkok
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0.029855 วินาที
Phetlada Kunthadee
| Title | Contributor | Type |
|---|---|---|
| Iron(III)-selective optical sensor based on plasticized membrane incorporating ethyl protocatechuate compared with naked-eye screening method
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Phetlada Kunthadee;Montira Phaphan | บทความ/Article |
Montira Phaphan
| Title | Contributor | Type |
|---|---|---|
| Iron(III)-selective optical sensor based on plasticized membrane incorporating ethyl protocatechuate compared with naked-eye screening method
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Phetlada Kunthadee;Montira Phaphan | บทความ/Article |