Optimisation and critical evaluation of a collision cell technology ICP-MS system for the determination of arsenic in foodstuffs of animal origin

Dufailly, Vincent; Noël, Laurent; Guérin, Thierry

doi:10.1016/j.aca.2008.02.018

Cited by 49 publications

(35 citation statements)

References 34 publications

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“…This interference can be overcome by using collision/reaction cell technology, which is now incorporated into all modern ICPMS instruments. Nevertheless, in some cases, new poly-atomic interferences can be formed within the collision cell but a carefully optimisation of the nebuliser gas flow in standard mode usually represents an effective and simple method for reducing analytical bias (Noël et al, 2005 andDufailly et al, 2008) have studied spectral interference more in detail. Hydride generation may also be used in combination with ICPMS to overcome possible chloride interference.…”

Section: Inductively Coupled Plasma Atomic Emission Spectrometry (Icpmentioning

confidence: 99%

Scientific Opinion on Arsenic in Food

2009

EFSA Journal

880

220

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The EFSA Panel on Contaminants in the Food Chain (CONTAM Panel) assessed the risks to human health related to the presence of arsenic in food. More than 100,000 occurrence data on arsenic in food were considered with approximately 98 % reported as total arsenic. Making a number of assumptions for the contribution of inorganic arsenic to total arsenic, the inorganic arsenic exposure from food and water across 19 European countries, using lower bound and upper bound concentrations, has been estimated to range from 0.13 to 0.56 µg/kg bodyweight (b.w.) per day for average consumers, and from 0.37 to 1.22 µg/kg b.w. per day for 95 th percentile consumers. Dietary exposure to inorganic arsenic for children under three years of age is in general estimated to be from 2 to 3-fold that of adults. The CONTAM Panel concluded that the provisional tolerable weekly intake (PTWI) of 15 µg/kg b.w. established by the Joint FAO/WHO Expert Committee on Food Additives (JECFA) is no longer appropriate as data had shown that inorganic arsenic causes cancer of the lung and urinary bladder in addition to skin, and that a range of adverse effects had been reported at exposures lower than those reviewed by the JECFA. The CONTAM Panel modelled the dose-response data from key for providing consumption information and calculating exposure, the partners of the EFSA project on the "Individual food consumption data and exposure" coordinated by Ghent University (Department of Public Health, University Hospital, Ghent University, Belgium), and RIKILT (Institute of Food Safety, Wageningen, The Netherlands) for the accessibility of the exposure assessment tools. 4 Table of contents shows now the fourth level of subheadings. 5 An error in the interpretation of the total number of the population in the study of Rahman et al. (2006a) was discovered (Table 41). The BMDL was recalculated and as a consequence it was not considered a potential reference point. The text in the opinion, Table 43 and Appendix were revised accordingly. In addition, the header of the "total number of cases" was replaced by "total number of individuals" in Tables 40-42 and the erroneous units were corrected to µg/L in the text below SUMMARYArsenic is a metalloid that occurs in different inorganic and organic forms, which are found in the environment both from natural occurrence and from anthropogenic activity. The inorganic forms of arsenic are more toxic as compared to the organic arsenic but so far most of the occurrence data in food collected in the framework of official food control are still reported as total arsenic without differentiating the various arsenic species. The need for speciation data is evident because several investigations have shown that especially in seafood most of the arsenic is present in organic forms that are less toxic. Consequently, a risk assessment not taking into account the different species but considering total arsenic as being present exclusively as inorganic arsenic would lead to a considerable overestimation of the health risk rel...

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Section: Inductively Coupled Plasma Atomic Emission Spectrometry (Icpmentioning

confidence: 99%

Scientific Opinion on Arsenic in Food

2009

EFSA Journal

880

220

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“…While inductively coupled plasma-mass spectrometry (ICP-MS) is one of the most sensitive techniques for As determination, the monoisotopic 75 As + signal suffers from the spectral interference of 40 Ar 35 Cl + in the chloride-containing matrixes. This interference can be eliminated (or reduced) by matrix separation through hydride generation [9,14], can be corrected with the use of interference-correction equations, or the formation of ArCl + is prevented by means of collision-cell techniques [15]. Inductively coupled plasma-atomic emission spectrometry (ICP-AES) and HG-ICP-AES are other instrumental techniques used for arsenic determination [16,17].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and application of a novel mercapto- and amine-bifunctionalized silica for speciation/sorption of inorganic arsenic prior to inductively coupled plasma mass spectrometric determination

Boyacı

Çağır

Shahwan

et al. 2011

Talanta

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a b s t r a c tA bifunctional sorbent, (NH 2 + SH)silica, containing both amine and mercapto functionalities was prepared by modification of silica gel with 3-(triethoxysilyl)propylamine and (3-mercaptopropyl)trimethoxysilane. In addition to the bifunctional sorbent, silica gel was modified individually with the functional mercapto-and amino-silanes, and the mono-functional sorbents, namely (SH)silica and (NH 2 )silica, were also mechanically mixed ((NH 2 )silica + (SH)silica) for the sake of comparison of sorption performances. It has been demonstrated that (SH)silica shows quantitative sorption only to As(III) at two pH values, 1.0 and 9.0, while (NH 2 )silica displays selectivity only towards As(V) at pH 3.0. On the other hand, the bifunctional (NH 2 + SH)silica possesses the efficient features of the two mono-functionalized sorbents; for example, it retains As(III) at a wider pH range, from 1.0 to at least 9.0 with the exception at pH 2.0, and it also shows quantitative sorption to As(V) at pH 3.0. This property gives the bifunctional (NH 2 + SH)silica a better flexibility in terms of sorption performance as a function of solution pH. The mechanically mixed (NH 2 )silica + (SH)silica exhibits a similar but less efficient sorption behavior compared to the bifunctional sorbent. Desorption of both As(III) and As(V) species can be realized using 0.5 M NaOH. The validity of the proposed method was checked through the analysis of a standard reference material and a good correlation was obtained between the certified (26.67 g L −1 ) and determined (27.53 ± 0.37 g L −1 ) values. Spike recovery tests realized with ultrapure water (93.0 ± 2.3%) and drinking water (86.9 ± 1.2%) also confirmed the applicability of the method.

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“…Various methods have been used for the determination of arsenic at the trace level including spectrophotometric [9 -11], atomic absorption and fluorescence spectroscopy [12 -17] and inductively coupled plasma-mass spectrometry (ICP-MS) [18,19]. The spectrophotometric methods are insensitive, suffer from many interferences, need organic solvents for extraction, have unsatisfactory detection limits, and exhibit poor reproducibility.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Voltammetric Speciation and Determination of Inorganic Arsenic in Water and Alloy Samples Using Ammonium 2‐Amino‐1‐Cyclopentene‐1‐Dithiocarboxylate

Ensafi¹,

Ring²,

Fritsch³

2010

Electroanalysis

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A simple, fast, reproducible (2.5% RSD at 3.0 mg/L), and sensitive method is described for quantifying As(III) (0.3 mg/ L detection limit, 0.5 -440 mg/L dynamic range). Anodic stripping voltammetry (ASV) is performed after accumulating arsenic at a mercury film electrode at À 0.350 V vs. Ag/AgCl (saturated KCl) for 20 s in 0.2 M HCl containing 8 mM ammonium 2-amino-1-cyclopentene-1-dithiocarboxylate (AACD), without oxygen removal. This is the first report of using AACD in ASV and in electrochemical quantification of As(III). Total arsenic is determined after sodium-sulfite-reduction of As(V) to As(III). Interferences are minimal. Method validation involved water and metal alloy samples.

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Optimisation and critical evaluation of a collision cell technology ICP-MS system for the determination of arsenic in foodstuffs of animal origin

Cited by 49 publications

References 34 publications

Scientific Opinion on Arsenic in Food

Scientific Opinion on Arsenic in Food

Synthesis, characterization and application of a novel mercapto- and amine-bifunctionalized silica for speciation/sorption of inorganic arsenic prior to inductively coupled plasma mass spectrometric determination

Highly Sensitive Voltammetric Speciation and Determination of Inorganic Arsenic in Water and Alloy Samples Using Ammonium 2‐Amino‐1‐Cyclopentene‐1‐Dithiocarboxylate

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