Development and validation of a method for the determination of Hg in animal tissues (equine muscle, bovine kidney and swine kidney, and poultry muscle) by direct mercury analysis (DMA)

Ribeiro, Rita F.L.; Germano, A.

doi:10.1016/j.microc.2015.03.005

Cited by 10 publications

(7 citation statements)

References 19 publications

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“…Following water samples, the most frequently analyzed material for mercury was seafood samples, such as fish, shrimp, and seaweed. A few studies reported the determination of mercury in various environmental samples, such as petroleum hydrocarbons [ 88 ], human hair [ 89 , 90 ], phosphate fertilizers [ 53 ], glycerin [ 91 ], sediments [ 55 , 92 , 93 ], cosmetics [ 94 ], living cells [ 66 , 95 ], and tobacco [ 67 ]. However, a few methods [ 74 , 81 , 87 , 96 – 101 ] did not report their applicability to natural samples.…”

Section: Discussionmentioning

confidence: 99%

“…More than 90% of studies using electrochemical methods or spectrophotometry and spectrofluorometry techniques determined divalent inorganic mercury and did not report speciation. However, a few reported [ 51 , 53 , 55 , 57 , 58 , 60 – 62 , 66 – 68 , 85 , 86 , 93 , 102 – 106 , 108 , 109 ] total mercury content in various samples, which does not accurately predict toxicity based on its concentration.…”

Section: Discussionmentioning

confidence: 99%

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Recent Studies on the Speciation and Determination of Mercury in Different Environmental Matrices Using Various Analytical Techniques

Suvarapu

Baek

2017

International Journal of Analytical Chemistry

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This paper reviews the current research on the speciation and determination of mercury by various analytical techniques, including the atomic absorption spectrometry (AAS), voltammetry, inductively coupled plasma optical emission spectrometry (ICP-OES), ICP-mass spectrometry (MS), atomic fluorescence spectrometry (AFS), spectrophotometry, spectrofluorometry, and high performance liquid chromatography (HPLC). Approximately 96 research papers on the speciation and determination of mercury by various analytical instruments published in international journals since 2015 were reviewed. All analytical parameters, including the limits of detection, linearity range, quality assurance and control, applicability, and interfering ions, evaluated in the reviewed articles were tabulated. In this review, we found a lack of information in speciation studies of mercury in recent years. Another important conclusion from this review was that there were few studies regarding the concentration of mercury in the atmosphere.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Recent Studies on the Speciation and Determination of Mercury in Different Environmental Matrices Using Various Analytical Techniques

Suvarapu

Baek

2017

International Journal of Analytical Chemistry

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“…The remaining aliquot was centrifuged (2350 g for 10 min) to collect the cell pellets, and the cell surface adsorbed Hg(II) was washed off using 2 mL of 100 μM DMPS (100 rpm, 40 °C for 30 min) . Then, the washed cell pellets were suspended in 10 mM MMOPS for intracellular Hg analysis using a direct mercury analyzer (DMA-80, Milestone, Italy) …”

Section: Materials and Methodsmentioning

confidence: 99%

Particle-Bound Hg(II) is Available for Microbial Uptake as Revealed by a Whole-Cell Biosensor

Xiang

Liu

et al. 2022

Environ. Sci. Technol.

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Particle-bound mercury (HgP), ubiquitously present in aquatic environments, can be methylated into highly toxic methylmercury, but it remains challenging to assess its bioavailability. In this study, we developed anEscherichia coli-based whole-cell biosensor to probe the microbial uptake of inorganic Hg(II) and assess the bioavailability of HgP sorbed on natural and model particles. This biosensor can quantitatively distinguish the contribution of dissolved Hg(II) and HgP to intracellular Hg. Results showed that the microbial uptake of HgP was ubiquitous in the environment, as evidenced by the bioavailability of sorbed-Hg(II) onto particulate matter and model particles (Fe2O3, Fe3O4, Al2O3, and SiO2). In both oxic and anoxic environments, HgP was an important Hg(II) source for microbial uptake, with enhanced bioavailability under anoxic conditions. The composition of particles significantly affected the microbial uptake of HgP, with higher bioavailability being observed for Fe2O3 and lower for Al2O3 particles. The bioavailability of HgP varied also with the size of particles. In addition, coating with humic substances and model organic compound (cysteine) on Fe2O3 particles decreased the bioavailability of HgP. Overall, our findings highlight the role of HgP in Hg biogeochemical cycling and shed light on the enhanced Hg-methylation in settling particles and sediments in aquatic environments.

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“…Measurement of Hg and MeHg in Cultured Chicken Tissues and Eggs : Sample preparation for Hg detection based on the Raman biosensor was conducted by wet digestion . Approximately 0.1 g dry weight of tissues and eggs was separately put in 50 mL centrifuge tubes, which was followed by adding 5 mL of 65% HNO 3 .…”

Section: Methodsmentioning

confidence: 99%

Au@gap@AuAg Nanorod Side‐by‐Side Assemblies for Ultrasensitive SERS Detection of Mercury and its Transformation

Aimeng

et al. 2019

Small

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As one of the most toxic heavy metal elements, mercury ion (Hg2+) and its methylated product, methylmercury (MeHg) can pose a threat to human health and the environment. Herein, a novel Raman biosensor with cascade sensitivity is developed for Hg2+ detection through Au@gap@AuAg nanorod side‐by‐side assemblies. Due to the strong electromagnetic coupling from the assemblies and core–shell structure, the Raman sensor possesses high sensitivity with the limit of detection (LOD) of 0.001 ng mL‐1, which is about one order lower than traditional atomic fluorescence spectrometer (AFS) methods. Moreover, the fabricated biosensor is used to measure residual mercury levels in tissues and eggs of hens fed high‐mercury diets, and the results show total mercury in collected egg yolks is 20 times higher than whites. Furthermore, the form of mercury in the eggs is also analyzed by high‐performance liquid chromatography coupled with AFS, and, unexpectedly, the methylated product MeHg tends to only be found in egg whites. These interesting differences may indicate a new research direction for the toxicity of mercury in living organisms, and the developed ultrasensitive Surface Enhanced Raman Scattering (SERS) method could pave a broad way for the application of biosensors in Hg detection.

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Development and validation of a method for the determination of Hg in animal tissues (equine muscle, bovine kidney and swine kidney, and poultry muscle) by direct mercury analysis (DMA)

Cited by 10 publications

References 19 publications

Recent Studies on the Speciation and Determination of Mercury in Different Environmental Matrices Using Various Analytical Techniques

Recent Studies on the Speciation and Determination of Mercury in Different Environmental Matrices Using Various Analytical Techniques

Particle-Bound Hg(II) is Available for Microbial Uptake as Revealed by a Whole-Cell Biosensor

Au@gap@AuAg Nanorod Side‐by‐Side Assemblies for Ultrasensitive SERS Detection of Mercury and its Transformation

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