Determination of heavy metals in milk by potentiometric stripping analysis using a home-made flow cell

Muñoz, Emma; Palmero, Susana

doi:10.1016/j.foodcont.2003.10.006

Cited by 32 publications

(13 citation statements)

References 20 publications

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“…The determination of Ca, Cu, Fe, K, Mg, Mn, Na, P and Zn in infant formulae, milk powders and liquid milk by slurry nebulisation and inductively coupled plasma-optical emission spectrometry were described by McKinstry, Indyk, and Kim (1999). Trace concentrations of Cd, Pb and Cu in milk were subsequently determined by potentiometric stripping analysis using a home-made flow cell after ashing (Muñoz & Palmero, 2004 International standard methods for the analysis of some elements in milk and milk products are well documented. These include determination of lead in evaporated milk by atomic absorption spectrometry after dry ashing and extraction with 1-pyrrolidinecarbodithioate, and by anodic stripping voltammetry after dry ashing and dissolving the residue in HNO 3 (AOAC, 1990).…”

Section: Introductionmentioning

confidence: 99%

Quantification of trace elements in raw cow’s milk by inductively coupled plasma mass spectrometry (ICP-MS)

et al. 2008

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The levels of trace elements are an important component of safety and quality of milk. While certain elements such as chromium are essential at low levels, an excess can result in deleterious effects on human health. International quality control standards for milk are published by the Codex Alimentarious Commission and levels of heavy metals in milk intended for human consumption are routinely monitored. This paper describes a new method for demonstrating the levels of V, Cr, Mn, Sr, Cd and Pb in raw cow's milk, using an ICP-MS. Samples (n = 24) of raw cow's milk were collected from dairy farms close to mines in Gauteng and North West Provinces of South Africa. In order to destroy organic matrix, each freeze dried milk sample was mineralised by using a microwave assisted digestion procedure. Concentrations of trace elements in digested milk samples were measured by ICP-MS. A whole milk powder reference material (NIST SRM 8435) was used to evaluate the accuracy of the proposed method. It was found that the levels of V, Cr, Mn, Sr, Cd and Pb obtained using the new method showed concordance with certified values.

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Section: Introductionmentioning

confidence: 99%

Quantification of trace elements in raw cow’s milk by inductively coupled plasma mass spectrometry (ICP-MS)

et al. 2008

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“…13 Anodic stripping analysis can also be coupled with a fl ow cell, as reported by Munoz and Palmero, that renders the analysis automatic after the sample treatment has been carried out by hand (milk, in this case). 14 The HDME was also used as an electrode for adsorptive stripping analysis, in which a complexant agent was used for the adsorptive collection of complexes with heavy metals, to be analysed on the HDME. Luminol was used as a chelating agent to detect copper and cadmium accurately (obtaining LOD for cadmium equal to 0.02 ng/ mL) in rice, tomato, tea, spinach, tap and mineral water.…”

Section: Electrochemical Methodsmentioning

confidence: 99%

Screening and confirmatory methods for the detection of heavy metals in foods

Arduini¹,

Palleschi²

2013

Persistent Organic Pollutants and Toxic Metals in Foods

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“…The use of two CCDs for the determination of heavy metals in powdered milk by potentiometric stripping analysis using a home-made flow cell was proposed by Munoz and Palmero [36]. In this study a 2 3 CCD followed by a 2 2 CCD were carried out for each metal under investigation in order to select and subsequently optimize the significant experimental variables (electrodeposition potential and time, flowrate) on the investigated response i.e.…”

Section: Pharmaceutical and Food Analysismentioning

confidence: 99%

Experimental Design Techniques for Optimization of Analytical Methods.Part II: Spectroscopic and Electroanalytical Techniques

Bianchi¹,

Careri

2008

CAC

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A review is presented on recent applications of experimental design and optimization techniques for the analysis of compounds of food, biomedical, toxicological and environmental concern. The main features and the significant advantages of chemometric approaches are discussed.Examples related to the determination of substances like xenobiotics, naturally occurring compounds and metals using different analytical techniques like inductively coupled plasma (ICP) sources, voltammetry and other techniques are provided in this Part. The use of experimental design techniques for optimization of extraction techniques is also emphasized. This survey will attempt to cover the state-of-the-art from 2004 to 2006.

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Determination of heavy metals in milk by potentiometric stripping analysis using a home-made flow cell

Cited by 32 publications

References 20 publications

Quantification of trace elements in raw cow’s milk by inductively coupled plasma mass spectrometry (ICP-MS)

Quantification of trace elements in raw cow’s milk by inductively coupled plasma mass spectrometry (ICP-MS)

Screening and confirmatory methods for the detection of heavy metals in foods

Experimental Design Techniques for Optimization of Analytical Methods.Part II: Spectroscopic and Electroanalytical Techniques

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