Analysis of lead in infant milk formula by differential pulse anodic stripping voltammetric technique / Nurhanis Zainol Abidin

Most of dairy products especially milk are very popular all over the world as a daily consumed by human as the nutritional balance food and has major sources of the nutrients especially for infant in the first six months of life. It is very important to determine the level of Pb content in infant...

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Main Author:	Zainol Abidin, Nurhanis
Format:	Student Project
Language:	English
Published:	Faculty Of Applied Sciences 2016
Subjects:	Analytical chemistry
Online Access:	http://ir.uitm.edu.my/id/eprint/23131/ http://ir.uitm.edu.my/id/eprint/23131/1/PPb_NURHANIS%20ZAINOL%20ABIDIN%20AS%20C%2016_5.PDF

id	uitm-23131
recordtype	eprints
spelling	uitm-231312019-02-25T07:02:06Z http://ir.uitm.edu.my/id/eprint/23131/ Analysis of lead in infant milk formula by differential pulse anodic stripping voltammetric technique / Nurhanis Zainol Abidin Zainol Abidin, Nurhanis Analytical chemistry Most of dairy products especially milk are very popular all over the world as a daily consumed by human as the nutritional balance food and has major sources of the nutrients especially for infant in the first six months of life. It is very important to determine the level of Pb content in infant milk formula either it is permissible to be consumed or not for the safety and quality purposed as it is neurotoxin for infants, reduces IQ, disables learning abilities and affects nervous system development. According to EC Regulation 446/2001, the limit of Pb in the infant milk formula is 20 ug/L. The differential pulse anodic stripping voltammetric (DPASV) technique using glassy carbon electrode (GCE) as a working electrode and acetate buffer at pH 4.6 as a supporting electrolyte has been proposed to be developed. The experimental voltammetric parameters were optimized in order to obtain a maximum response with analytical validation of the technique. The optimum parameters were initial potential (Ei) =-1.0 V, end potential (Ef) = -0.2 V, scan rate (v) = 0.04 VIs, accumulation time (tacc) = 90 s, accumulation potential (Eacc) == -1.0 V and pulse amplitude = 0.075 V. The anodic peak was appeared at -0.5603 V. The curve was linear from 0.05 to 1.0 Mg/L (R2=0.09992) with detection limit of 10 ug/L. The precisions in terms of relative standard deviation (RSD) were 4.28%, 2.82% and 0.78% for consecutive three days. The satisfactory recoveries obtained were from 79.26 to 87.75% and 94.72 to 98.88% for respective 0.5 and 1.0 mg/L Pb standard solution in the pre-treated infant milk formula samples. It can be concluded that the developed technique is precise, accurate, rugged, robust, low cost, fast and has potential to be an alternative method for routine analysis of Pb in the infant milk formula. Faculty Of Applied Sciences 2016 Student Project NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/23131/1/PPb_NURHANIS%20ZAINOL%20ABIDIN%20AS%20C%2016_5.PDF Zainol Abidin, Nurhanis (2016) Analysis of lead in infant milk formula by differential pulse anodic stripping voltammetric technique / Nurhanis Zainol Abidin. [Student Project] (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Analytical chemistry
spellingShingle	Analytical chemistry Zainol Abidin, Nurhanis Analysis of lead in infant milk formula by differential pulse anodic stripping voltammetric technique / Nurhanis Zainol Abidin
description	Most of dairy products especially milk are very popular all over the world as a daily consumed by human as the nutritional balance food and has major sources of the nutrients especially for infant in the first six months of life. It is very important to determine the level of Pb content in infant milk formula either it is permissible to be consumed or not for the safety and quality purposed as it is neurotoxin for infants, reduces IQ, disables learning abilities and affects nervous system development. According to EC Regulation 446/2001, the limit of Pb in the infant milk formula is 20 ug/L. The differential pulse anodic stripping voltammetric (DPASV) technique using glassy carbon electrode (GCE) as a working electrode and acetate buffer at pH 4.6 as a supporting electrolyte has been proposed to be developed. The experimental voltammetric parameters were optimized in order to obtain a maximum response with analytical validation of the technique. The optimum parameters were initial potential (Ei) =-1.0 V, end potential (Ef) = -0.2 V, scan rate (v) = 0.04 VIs, accumulation time (tacc) = 90 s, accumulation potential (Eacc) == -1.0 V and pulse amplitude = 0.075 V. The anodic peak was appeared at -0.5603 V. The curve was linear from 0.05 to 1.0 Mg/L (R2=0.09992) with detection limit of 10 ug/L. The precisions in terms of relative standard deviation (RSD) were 4.28%, 2.82% and 0.78% for consecutive three days. The satisfactory recoveries obtained were from 79.26 to 87.75% and 94.72 to 98.88% for respective 0.5 and 1.0 mg/L Pb standard solution in the pre-treated infant milk formula samples. It can be concluded that the developed technique is precise, accurate, rugged, robust, low cost, fast and has potential to be an alternative method for routine analysis of Pb in the infant milk formula.
format	Student Project
author	Zainol Abidin, Nurhanis
author_facet	Zainol Abidin, Nurhanis
author_sort	Zainol Abidin, Nurhanis
title	Analysis of lead in infant milk formula by differential pulse anodic stripping voltammetric technique / Nurhanis Zainol Abidin
title_short	Analysis of lead in infant milk formula by differential pulse anodic stripping voltammetric technique / Nurhanis Zainol Abidin
title_full	Analysis of lead in infant milk formula by differential pulse anodic stripping voltammetric technique / Nurhanis Zainol Abidin
title_fullStr	Analysis of lead in infant milk formula by differential pulse anodic stripping voltammetric technique / Nurhanis Zainol Abidin
title_full_unstemmed	Analysis of lead in infant milk formula by differential pulse anodic stripping voltammetric technique / Nurhanis Zainol Abidin
title_sort	analysis of lead in infant milk formula by differential pulse anodic stripping voltammetric technique / nurhanis zainol abidin
publisher	Faculty Of Applied Sciences
publishDate	2016
url	http://ir.uitm.edu.my/id/eprint/23131/ http://ir.uitm.edu.my/id/eprint/23131/1/PPb_NURHANIS%20ZAINOL%20ABIDIN%20AS%20C%2016_5.PDF
first_indexed	2023-09-18T23:10:07Z
last_indexed	2023-09-18T23:10:07Z
_version_	1777418746470596608

Analysis of lead in infant milk formula by differential pulse anodic stripping voltammetric technique / Nurhanis Zainol Abidin

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