Cold vapour atomic fluorescence determination of mercury in milk by slurry sampling using multicommutation

Cava-Montesinos, Patricia; Ródenas‐Torralba, Eva; Morales‐Rubio, Ángel; Cervera, M. Luisa; Guárdia, Miguel de la

doi:10.1016/j.aca.2003.11.023

Cited by 80 publications

(35 citation statements)

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“…Following acidic digestion of samples (Evans et al 2006), cold vapour atomic absorption spectrometry (CV-AAS; Torres et al, 2009;Mousavi et al, 2010;Jarzynska and Falandysz, 2011) or cold vapour atomic fluorescence spectrometry (CV-AFS; Cava-Montesinos et al, 2004;da Silva et al, 2010;Xia et al, 2010;Senila et al, 2011) has been widely used for the determination of total mercury in several food matrices. Similar limits of quantification (LOQ) may be obtained by CV-AFS (LOQ of about 2 -10 µg/kg) and CV-AAS (about 3 ng/L in water and 4 -30 µg/kg in foods).…”

Section: For Total Mercury Analysismentioning

confidence: 99%

“…The status of certification of the new reference materials can be found on the web sites of the reference material providers. Most of analytical methods published in the literature are to a certain extent in-house validated for total mercury (Cava-Montesinos et al, 2004;Carbonell et al, 2009;Nardi et al, 2009;Torres et al, 2009;da Silva et al, 2010;Xia et al, 2010;Jarzynska and Falandysz, 2011;Millour et al, 2011a;Senila et al, 2011;Djedjibegovic et al, 2012) and methylmercury (Landaluze et al, 2004;Abrankó et al, 2007;Diez and Bayona 2008;Hippler et al, 2009;Jackson et al, 2009;Clémens et al, 2011;Guzman-Mar et al, 2011;He et al, 2011;Nevado et al, 2011). Two fully validated, European standardised methods for determination of total mercury by CV-AAS and ICP-MS detection are available (CEN, 2003(CEN, , 2010.…”

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confidence: 99%

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Scientific Opinion on the risk for public health related to the presence of mercury and methylmercury in food

2012

EFS2

463

160

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EFSA was asked by the European Commission to consider new developments regarding inorganic mercury and methylmercury toxicity and evaluate whether the Joint FAO/WHO Expert Committee on Food Additives (JECFA) provisional tolerable weekly intakes for methylmercury of 1.6 µg/kg body weight (b.w.) and of 4 µg/kg b.w. for inorganic mercury were still appropriate. In line with JECFA, the CONTAM Panel established a tolerable weekly intake (TWI) for inorganic mercury of 4 µg/kg b.w., expressed as mercury. For methylmercury, new developments in epidemiological studies from the Seychelles Child Developmental Study Nutrition Cohort have indicated that n-3 long-chain polyunsaturated fatty acids in fish may counteract negative effects from methylmercury exposure. Together with the information that beneficial nutrients in fish may have confounded previous adverse outcomes in child cohort studies from the Faroe Islands, the Panel established a TWI for methylmercury of 1.3 µg/kg b.w., expressed as mercury. The mean dietary exposure across age groups does not exceed the TWI for methylmercury, with the exception of toddlers and other children in some surveys. The 95 th percentile dietary exposure is close to or above the TWI for all age groups. High fish consumers, which might include pregnant women, may exceed the TWI by up to approximately six-fold. Unborn children constitute the most vulnerable group. Biomonitoring data from blood and hair indicate that methylmercury exposure is generally below the TWI in Europe, but higher levels are also observed. Exposure to methylmercury above the TWI is of concern. If measures to reduce methylmercury exposure are considered, the potential beneficial effects of fish consumption should also be taken into account. Dietary inorganic mercury exposure in Europe does not exceed the TWI, but inhalation exposure of elemental mercury from dental amalgam is likely to increase the internal inorganic mercury exposure; thus the TWI might be exceeded. This opinion focuses only on the risks related to dietary inorganic mercury and methylmercury exposure and does not assess the nutritional benefits linked to certain foods (e.g. fish and other seafood).A call for annual collection of chemical contaminant occurrence data in food and feed, including mercury, was issued by EFSA in December 2010. In response, EFSA received 59 820 results on mercury in food from 20 European countries, mainly covering the period from 2004 to 2011. A total number of 59 650 results were described with sufficient detail to be used in the statistical analysis of the respective food groups; 98.2 % of the samples were for total mercury, 1.8 % for methylmercury and three samples for inorganic mercury.All the 20 food groups available at the first level of FoodEx were covered in the current data collection. The food groups 'Fish and other seafood' and 'Meat and meat products' dominated the food product coverage with 36.8 % and 17.6 % respectively. These were followed by 'Grain and grain-based products' at 7.8 % and 'Vegetables an...

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Section: For Total Mercury Analysismentioning

confidence: 99%

mentioning

confidence: 99%

Scientific Opinion on the risk for public health related to the presence of mercury and methylmercury in food

2012

EFS2

463

160

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“…Consequently, method development for the cost-effective and sensitive determination of mercury in environmental and biological materials has been active in recent years [3][4][5][6]. Mercury cold vapor generation (CVG) has been most effectively used in the determination of mercury, and several reductants have been investigated for the reduction of Hg 2+ to Hg 0 , e.g., stannous chloride [7], sodium cyanotrihydroborate(III) [8], and most frequently, sodium/ potassium tetrahydroborate (THB) [9].…”

Section: Introductionmentioning

confidence: 99%

Photo-induced cold vapor generation with low molecular weight alcohol, aldehyde, or carboxylic acid for atomic fluorescence spectrometric determination of mercury

et al. 2007

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With UV irradiation, Hg 2+ in aqueous solution can be converted into Hg 0 cold vapor by low molecular weight alcohols, aldehydes, or carboxylic acids, e.g., methanol, formaldehyde, acetaldehyde, glycol, 1,2-propanediol, glycerol, acetic acid, oxalic acid, or malonic acid. It was found that the presence of nano-TiO 2 more or less improved the efficiency of the photo-induced chemical/cold vapor generation (photo-CVG) with most of the organic reductants. The nano-TiO 2 -enhanced photo-CVG systems can be coupled to various analytical atomic spectrometric techniques for the determination of ultratrace mercury. In this work, we evaluated the application of this method to the atomic fluorescence spectrometric (AFS) determination of mercury in cold vapor mode. Under the optimized experimental conditions, the instrumental limits of detection (based on three times the standard deviation of 11 measurements of a blank solution) were around 0.02-0.04 μg L −1 , with linear dynamic ranges up to 15 μg L −1 .The interference of transition metals and the mechanism of the photo-CVG are briefly discussed. Real sample analysis using the photo-CVG-AFS method revealed that it was promising for water and geological analysis of ultralow levels of mercury.

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“…Várias técnicas têm sido utilizadas para análise de mercúrio em nível de traços em amostras ambientais, entre elas: espectrometria de absorção atômica com vapor frio (EAA-VF) (WUILLOUD, 2002;SEGADE;BENDICHO, 1999;HAFEZ, 2001), espectrometria de fluorescência atômica com vapor frio (EFA-VF) (MONTESINOS, 2004;BRINDLE, 2007), espectroscopia de massa por indução de acoplamento de plasma ( ALLIBONE; FATEMIAN; WALKER, 1999), e métodos eletroquímicos utilizando eletrodos quimicamente modificados (YANTASEE et al, 2003;IMISIDES;WALLACE, 1988;LABUDA;PLASKON, 1990;WANG;. A técnica EAA-VF se popularizou devido à facilidade de operação, boa sensibilidade e baixo custo, quando comparada às outras técnicas (CHILOV, 1975).…”

Section: Introductionunclassified

Novo método espectrofotométrico para determinação de Hg (II) em amostras de peixe

Martiniano¹,

Bezerra²,

Marques³

et al. 2008

Ciênc. Tecnol. Aliment.

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Cold vapour atomic fluorescence determination of mercury in milk by slurry sampling using multicommutation

Cited by 80 publications

References 14 publications

Scientific Opinion on the risk for public health related to the presence of mercury and methylmercury in food

Scientific Opinion on the risk for public health related to the presence of mercury and methylmercury in food

Photo-induced cold vapor generation with low molecular weight alcohol, aldehyde, or carboxylic acid for atomic fluorescence spectrometric determination of mercury

Novo método espectrofotométrico para determinação de Hg (II) em amostras de peixe

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