Speciation of Trace Elements and its Importance in Environmental and Biomedical Sciences

Pawlaczyk, Aleksandra; Maćkiewicz, Elżbieta; Szynkowska, M. I.

doi:10.1002/9781119133780.ch25

Cited by 3 publications

(4 citation statements)

References 78 publications

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“…In this study, only total mercury content was determined in canned fish and other seafood products. Obviously, high concentration of mercury in fish can be a result of its bioaccumulation (net accumulation of a trace element in a tissue of interest or a whole organism that results from exposure), bioconcentration (uptake of a chemical by an organism directly from the abiotic environment resulting in a higher concentration within the organism), and the position of fish in the food chain (biomagnification being an increase in the concentration in an organism from a lower trophic level to a higher trophic level within the same food web due to bioaccumulation from the diet), as it was previously mentioned [ 11 , 12 ]. It is also a well-known fact that methylmercury can be a dominant form of mercury in fish.…”

Section: Resultsmentioning

confidence: 99%

“…Exposure to methylmercury occurs almost exclusively through the consumption of fish, especially predatory fish, seafood, and meat of large marine mammals. Methylmercury accounts for approximately 70–90% of total mercury content in them according to different literature data [ 8 , 9 , 10 ] and it undergoes bioaccumulation, bioconcentration, and biomagnification along the food chain [ 11 , 12 ]. However, this compound can be absorbed as well through the skin and lungs.…”

Section: Introductionmentioning

confidence: 99%

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Risk of Mercury Ingestion from Canned Fish in Poland

et al. 2020

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In this study, total mercury content was determined in 84 canned fish corresponding to commonly consumed brands (over 14 different producers), which were purchased from local markets in Poland in the years 2019–2020. For comparison purposes, samples of both the matrix in which the fish were kept along with the seafood samples were measured. The analyses were carried out using the cold vapor AAS technique. Statistical analyses were employed to identify significant differences in mercury content in relation to the selected criteria such as fish species, type of fish (predatory, non-predatory) and the producer brand. The obtained results were compared against domestic and international standards as well as with the literature data in order to evaluate the safety of the canned fish consumption. The study revealed that none of canned fish exceeded the acceptable levels set by the FAO/WHO. The highest amount of Hg was recorded for canned tuna (maximum 351.30 µg/kg, mean 74.38 µg/kg). Further, the estimated tolerable dose of weekly mercury intake suggests that the consumption of over 1.8 cans of fish with the highest mean mercury content should not pose a risk to consumers in Poland according to international standards. Among the ten highest mean results for mercury, five of them belonged to canned tuna (Bonito species) kept in different matrices. These consisted of seven domestic and three imported brands of fish products, which is a worrying message for a local community. Mercury content in predatory fish differed significantly from the results gathered for non-predatory fish and the total amount of mercury in studied canned fish corresponded to their status in the aquatic food chain. Moreover, significant differences were stated between various fish species and fishing areas. Fish caught in the Atlantic Ocean (cod and herring) presented higher mercury content than the ones from closed seas.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Risk of Mercury Ingestion from Canned Fish in Poland

et al. 2020

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“…Analytical speciation methods for the determination of traces of elements in different chemical forms have become increasingly important in the most recent decades. This trend is ascribed to the increasing consciousness about the evidence that the total concentration of elements cannot provide complete information about the mobility and the impact of elements on environmental and biological systems. , From the analytical chemists’ point of view, this implies continuous efforts in the setting up and in the improvement of speciation methods which represent a still very active research field, as revealed by some recent reviews appeared in the literature. − …”

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confidence: 99%

“…This trend is ascribed to the increasing consciousness about the evidence that the total concentration of elements cannot provide complete information about the mobility and the impact of elements on environmental and biological systems. 1,2 From the analytical chemists' point of view, this implies continuous efforts in the setting up and in the improvement of speciation methods which represent a still very active research field, as revealed by some recent reviews appeared in the literature. 3−5 Even if direct methods, including spectrophotometric or voltammetric techniques, were developed for the speciation of several elements, 6 the methods of choice for routine inlaboratory determination are commonly based on the hyphenation of separation techniques, such as ion chromatography (IC) and high-performance liquid chromatography (HPLC), with sensitive detection systems, such as atomic fluorescence spectrometry-hydride generation (AFS-HG), atomic absorption spectrometry-hydride generation (AAS-HG), and inductively coupled plasma-mass spectrometry (ICP-MS).…”

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Introducing Frontal Chromatography–Inductively Coupled Plasma-Mass Spectrometry as a Fast Method for Speciation Analysis: The Case of Inorganic Arsenic

et al. 2019

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A frontal chromatography–ICP-MS method (FC-ICP-MS) is proposed as an innovative approach for fast elemental speciation analysis: inorganic arsenic speciation was selected as the first case study to prove the feasibility of the technique and to explore its potentialities and limits. The principal benefits of the FC-ICP-MS approach are the short analysis time and the very simple instrumental setup. As(III) and As(V) front separation is performed over a strong anion exchanger at pH 7.5. After the optimization of the instrumental setup and the frontal chromatographic parameters, As(III) and As(V) concentrations up to 240 μg/kg can be determined within 120–140 s using different univariate and multivariate calibration approaches. Best results in terms of accuracy in prediction were obtained using the partial least squares (PLS) calibration achieving limits of detection of 0.18 and 0.21 μg/kg for As(III) and As(V), respectively. This approach was also used to establish the figures of merit of the method. The proved feasibility and good performances (in terms of analysis time and accuracy) of this technique lay the groundwork for future applications of FC-ICP-MS for the speciation of other elements.

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