Determination of mercury(II) using zincaluminium layered double hydroxide-3 (4-hydroxyphenyl) propionate modified multi-walled carbon nanotube paste electrode (IR)

This study describes the preparation of chemically modified multi-walled carbon nanotube paste electrode with zinc/aluminium layered double hydroxide-3(4- hydroxyphenyl)propionate nanocomposite (Zn/Al-LDH-HPP) for determination of Hg(II) by cyclic voltammetry method. Experimental parameters influenc...

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主要作者:	Mariah Rihan Fasyir
格式:	thesis
语言:	eng
出版:	2015
主题:	QD Chemistry
在线阅读:	https://ir.upsi.edu.my/detailsg.php?det=1421
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id	oai:ir.upsi.edu.my:1421
record_format	uketd_dc
spelling	oai:ir.upsi.edu.my:14212020-02-27 Determination of mercury(II) using zincaluminium layered double hydroxide-3 (4-hydroxyphenyl) propionate modified multi-walled carbon nanotube paste electrode (IR) 2015 Mariah Rihan Fasyir QD Chemistry This study describes the preparation of chemically modified multi-walled carbon nanotube paste electrode with zinc/aluminium layered double hydroxide-3(4- hydroxyphenyl)propionate nanocomposite (Zn/Al-LDH-HPP) for determination of Hg(II) by cyclic voltammetry method. Experimental parameters influencing the voltammetric response including percentage of modifier, type of supporting electrolyte, pH and scan rate were examined and optimized. The results show that optimum conditions of the voltammetric response were obtained at 2.5% (w/w) of Zn/Al-LDH-HPP, 0.5 M potassium chloride, pH 5.0 and scan rate of 100 mV s-1. A linear range was obtained within the concentration of 1.0 x 10-9 to 1.0 x 10-7M Hg(II) and 1.0 x 10-7 to 1.0 x 10-3 M Hg(II) with the limit of detection 5.0 x 10-10 M Hg(II). The presence of 25-folds concentration of most metal ions did not interfere the anodic peak current except Zn(II). In conclusion, the proposed modified multi-walled carbon nanotube paste electrode showed a high sensitivity, good selectivity, repeatability and reproducibility, making it suitable for the determination of Hg(II) in marine animal samples, for instance, fish and shellfish. 2015 thesis https://ir.upsi.edu.my/detailsg.php?det=1421 https://ir.upsi.edu.my/detailsg.php?det=1421 text eng closedAccess Masters Universiti Pendidikan Sultan Idris Fakulti Sains dan Matematik N/A
institution	Universiti Pendidikan Sultan Idris
collection	UPSI Digital Repository
language	eng
topic	QD Chemistry
spellingShingle	QD Chemistry Mariah Rihan Fasyir Determination of mercury(II) using zincaluminium layered double hydroxide-3 (4-hydroxyphenyl) propionate modified multi-walled carbon nanotube paste electrode (IR)
description	This study describes the preparation of chemically modified multi-walled carbon nanotube paste electrode with zinc/aluminium layered double hydroxide-3(4- hydroxyphenyl)propionate nanocomposite (Zn/Al-LDH-HPP) for determination of Hg(II) by cyclic voltammetry method. Experimental parameters influencing the voltammetric response including percentage of modifier, type of supporting electrolyte, pH and scan rate were examined and optimized. The results show that optimum conditions of the voltammetric response were obtained at 2.5% (w/w) of Zn/Al-LDH-HPP, 0.5 M potassium chloride, pH 5.0 and scan rate of 100 mV s-1. A linear range was obtained within the concentration of 1.0 x 10-9 to 1.0 x 10-7M Hg(II) and 1.0 x 10-7 to 1.0 x 10-3 M Hg(II) with the limit of detection 5.0 x 10-10 M Hg(II). The presence of 25-folds concentration of most metal ions did not interfere the anodic peak current except Zn(II). In conclusion, the proposed modified multi-walled carbon nanotube paste electrode showed a high sensitivity, good selectivity, repeatability and reproducibility, making it suitable for the determination of Hg(II) in marine animal samples, for instance, fish and shellfish.
format	thesis
qualification_name
qualification_level	Master's degree
author	Mariah Rihan Fasyir
author_facet	Mariah Rihan Fasyir
author_sort	Mariah Rihan Fasyir
title	Determination of mercury(II) using zincaluminium layered double hydroxide-3 (4-hydroxyphenyl) propionate modified multi-walled carbon nanotube paste electrode (IR)
title_short	Determination of mercury(II) using zincaluminium layered double hydroxide-3 (4-hydroxyphenyl) propionate modified multi-walled carbon nanotube paste electrode (IR)
title_full	Determination of mercury(II) using zincaluminium layered double hydroxide-3 (4-hydroxyphenyl) propionate modified multi-walled carbon nanotube paste electrode (IR)
title_fullStr	Determination of mercury(II) using zincaluminium layered double hydroxide-3 (4-hydroxyphenyl) propionate modified multi-walled carbon nanotube paste electrode (IR)
title_full_unstemmed	Determination of mercury(II) using zincaluminium layered double hydroxide-3 (4-hydroxyphenyl) propionate modified multi-walled carbon nanotube paste electrode (IR)
title_sort	determination of mercury(ii) using zincaluminium layered double hydroxide-3 (4-hydroxyphenyl) propionate modified multi-walled carbon nanotube paste electrode (ir)
granting_institution	Universiti Pendidikan Sultan Idris
granting_department	Fakulti Sains dan Matematik
publishDate	2015
url	https://ir.upsi.edu.my/detailsg.php?det=1421
_version_	1747832969480896512

Determination of mercury(II) using zincaluminium layered double hydroxide-3 (4-hydroxyphenyl) propionate modified multi-walled carbon nanotube paste electrode (IR)

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