Determination and Fractionation of Metals in Honey

Pohl, Paweł; Sergiel, Iwona; Stecka, Helena

doi:10.1080/10408340903001250

Cited by 46 publications

(43 citation statements)

References 68 publications

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“…Bees and their products have been used to monitor environmental contamination [3][4][5][6][7][8][9]. There are significant correlations between the level of toxic metals in soil and plants and their content in bee products [10].…”

Section: Introductionmentioning

confidence: 99%

As, Cr, Cd, and Pb in Bee Products from a Polish Industrialized Region

et al. 2016

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Bee pollen and bee bread from stationary apiaries in the southwest Polish Legnica-Glogow copper district (LGOM) were analyzed for Cr, Pb, Cd and As by ICP-AES. Their concentrations in both products were As > Cr > Pb > Cd. Concentrations in bee pollen were higher than in bee bread. Average Cr, Pb, As and Cd concentrations in bee products were 0.138, 0.093, 0.325, and 0.019 mg kg -1 , respectively. Chromium was the most problematic element in bee pollen because its concentration limit was exceeded in more than 50% of the samples. Differences in Cd level between bee pollen and bread were significant (p < 0.05)

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Section: Introductionmentioning

confidence: 99%

As, Cr, Cd, and Pb in Bee Products from a Polish Industrialized Region

et al. 2016

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“…D-fructose (purity > 98%) and D-glucose (purity > 98%) were supplied by POCH (Gliwice, Poland). The other solid reagents were also taken from POCH and were used for the preparation of alkaline 6 KGaA (Darmstadt, Germany) were applied to prepare 1000 mg mL -1 single-element stock standard solutions of Ca, K, Mg and Na. These solutions were used to prepare the standard solutions of Ca, K, Mg and Na for the calibration as well as the 50 mL working standard solutions containing 2.0, 50, 0.5 and 2.0 mg mL -1 of Ca, K, Mg and Na, respectively, in addition to 20 mg mL -1 of fructose and glucose.…”

Section: Reagents and Materialsmentioning

confidence: 99%

“…The subsequent stages of these procedures can additionally be responsible for losses (by the sample overheating and sputtering) or gains (by the contamination from the reagents and the vessels) of the elements. 6 The direct analysis of honey on the content of Ca and Mg, predated by the dilution of the respective samples in water or diluted solutions of the oxidizing reagents (HNO 3 mostly, H 2 O 2 ) and the aspiration of the resulting solutions into FAAS, is less frequent due to profound matrix effects originating from the presence of fructose and glucose in addition to the mineral elements like P or S. Although this method seems to be straightforward, a series of dilutions has to be done for each honey in order to assure that the selected content of honey in the analyzed solutions and the constituents that could potentially interfere with the Ca and Mg measurements would not affect the analytical response for these elements in FAAS. 3,4,[14][15][16] What is more, although the 2-5% (m/v) honey solutions can directly be measured by FAAS, the load of the organic matter and the main mineral constituents in the solutions of such untreated samples may still be high.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5] Both elements are quite often determined in this matrix using air-acetylene flame atomic absorption spectrometry (FAAS), however, due to the complexity of the samples, i.e., the very high content of the monosaccharides, the easily ionized elements like K and Na, phosphates and the other anions, their measurements with the aid of FAAS may encounter some problems related to the matrix effects. 6 In reference to the possibility of the routine analyses and the quality and food safety control measurements of honey, the selection of a suitable procedure for the sample treatment is of a special importance in this case because it decides about the time of the analysis and the dependability of the results.…”

Section: Introductionmentioning

confidence: 99%

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Fast and interference free determination of calcium and magnesium in honeys by solid phase extraction followed by flame atomic absorption spectrometry

Pohl

Stecka

2012

J. Braz. Chem. Soc.

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Um procedimento para preparo de amostras, baseado na extração em fase sólida e eluição em duas etapas foi desenvolvido para a determinação da concentração total de Ca e Mg em méis de abelha. As amostras de mel foram tratadas como segue: soluções de amostra (50 mL) a 5,0% (m/v) foram passados a uma vazão de 20 mL min -1 , através de resina Dowex 50W×8-400, para reter íons Ca(II) e Mg(II) e separá-los da matriz contendo glicose e frutose, e dos minerais aniônicos. Depois, 20 mL de uma solução de HNO 3 0,5 mol L -1 foram usados para remover os íons K e Na. Finalmente, Ca e Mg foram eluídos com 5 mL de solução de HCl 2,0 mol L -1 antes da medida de suas concentrações por espectrometria de absorção atômica em chama (FAAS). O procedimento proposto para o preparo da amostra foi rápido (30 min) e permitiu medir as concentrações de Ca e Mg em mel, com precisão de 1-5% e exatidão de 1-3%. Os limites de detecção de 24 ng g -1 de Ca e 4,4 ng g -1 de Mg foram obtidos para FAAS com este procedimento.A sample preparation procedure based on the solid phase extraction and the two-step elution was developed for the determination of the total concentrations of Ca and Mg in bee honeys. The honey samples were treated as follows: the 5.0% (m/v) sample solutions (50 mL) were passed at the flow rate of 20 mL min -1 through the resin beds of Dowex 50W×8-400 to retain the Ca(II) and Mg(II) ions and separate them from the matrix of glucose and fructose in addition to the anionic minerals. Afterwards, 20 mL of a 0.5 mol L -1 HNO 3 solution was used to remove the K and Na ions. Finally, Ca and Mg were eluted prior to the measurements of their concentrations by flame atomic absorption spectrometry (FAAS) using 5 mL of a 2.0 mol L -1 HCl solution. The proposed sample preparation procedure was fast (30 min) and enabled to measure the concentrations of Ca and Mg in honey with the precision of 1-5% and the accuracy of 1-3%. The limits of detection of 24 ng g -1 of Ca and 4.4 ng g -1 of Mg were obtained for FAAS with this procedure.

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“…Although the amount of micro-and macro-elements depends on apicultural products' botanical origin (Gonzalez-Miret et al, 2005;Lachman et al, 2007), the environmental pollution should also be considered as an additional source of some micro and toxic elements in apicultural products such as Cd, Ni, Cr, Cu, Fe, Pb and Zn. These elements may jeopardize the quality and the safety of apicultural products, and exhibit a potential hazard to human health (Crane 1984;Pohl et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Major and Minor Element Levels in Greek Apicultural Products

2017

Global NEST Journal

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In the present study, four beehive matrices (honey, propolis, pollen and bees), sampled from thirteen apiaries from Northern and Western Greece, were analyzed for the presence of Cr, Cu, Mn, Fe, Zn, Mg, and Ca. The proposed method involved microwave digestion with H2O2 and HNO3, dilution with water and direct determination by flame atomic absorption spectrometry. The results showed that the levels of elements in all apicultural products present the following order: Ca > Mg > Zn ≈ Fe > Mn > Cu. Cr was detected at LOD level (0.3 μg g ) in pollen and propolis. It was also demonstrated that all detected elements are accumulated at higher concentrations in pollen, propolis and bees and to a much lesser extent in honey. Dependence of the content of Mg in honey and of the content of Zn and Cu in pollen, on the geographical origin of samples was identified.

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Determination and Fractionation of Metals in Honey

Cited by 46 publications

References 68 publications

As, Cr, Cd, and Pb in Bee Products from a Polish Industrialized Region

As, Cr, Cd, and Pb in Bee Products from a Polish Industrialized Region

Fast and interference free determination of calcium and magnesium in honeys by solid phase extraction followed by flame atomic absorption spectrometry

Major and Minor Element Levels in Greek Apicultural Products

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