Evaluation of some Isolation Methods for Organomercury Determination in Soil and Fish Samples by Capillary Gas Chromatography—Atomic Fluorescence Spectrometry

Cai, Yong; Tang, Gangling; Jaffé, Rudolf; Jones, Ronald D.

doi:10.1080/03067319708030499

Cited by 82 publications

(43 citation statements)

References 22 publications

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“…Organic mercury (quantified as total organic mercury) was quantified in the most contaminated area and in three sites progressively farther from the mercury source, through an extraction process involving acid leaching (KBr 18% in H 2 SO 4 5%) and extraction of organic mercury in toluene (Cai et al, 1997). The aqueous fraction resulting from the addition of a Na 2 S 2 O 3 solution was then analysed by pyrolysis atomic absorption spectrometry with gold amalgamation.…”

Section: Discussionmentioning

confidence: 99%

Macroalgae response to a mercury contamination gradient in a temperate coastal lagoon (Ria de Aveiro, Portugal)

Coelho

Pereira

Duarte

et al. 2005

Estuarine, Coastal and Shelf Science

114

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Primary producers represent an important pathway for mercury incorporation in aquatic food webs. With eutrophication processes occurring worldwide, macroalgae may represent a substantial pool of mercury, as a result of its high growth rate and capacity to bind trace metals. The main aim of this work was to evaluate the response of the macroalgae to a human-induced environmental mercury gradient in a temperate coastal lagoon, by assessing the total and organic mercury contamination levels of the dominant species (Enteromorpha, Fucus and Gracilaria). Total mercury in the plant tissues ranged from 0.02 to 2.1 mg g ÿ1 dwt. Fucus was the most contaminated algae, followed by Gracilaria and Enteromorpha. As a whole, organic mercury never exceeded 15% of total mercury content, but tended to increase with distance to metal source on all macroalgae indicating complex physiological responses from these primary producers in areas of high and low mercury concentrations. Sessile macroalgae may be important mercury immobilisation agents, while free-floating algae (Enteromorpha) play an important role in mercury transport from contaminated areas (G10 g ha ÿ1 ) to other areas of the lagoon and even to coastal waters. Based on the present results the use of macroalgal biomass from contaminated areas for direct or indirect human use (e.g. agricultural, industrial and food purposes) may result in health risks, due to the high bioaccumulation capacity (as high as 10 4 the dissolved mercury concentrations).

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Section: Discussionmentioning

confidence: 99%

Macroalgae response to a mercury contamination gradient in a temperate coastal lagoon (Ria de Aveiro, Portugal)

Coelho

Pereira

Duarte

et al. 2005

Estuarine, Coastal and Shelf Science

114

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“…Three of the fish were randomly chosen for MeHg analysis. The sample preparation was based on the previous method (Alli et al, 1994;Cai et al, 1997) with slight modification. Briefly, about 0.1-0.2 g of whole body from a medaka fish was weighed in triplicates, and then homogenized and put into a 50 mL glass centrifuge tube.…”

Section: Methylmercury Content Analysismentioning

confidence: 99%

Interaction of methylmercury and selenium on the bioaccumulation and histopathology in medaka (Oryzias latipes)

Liao

Zhou

et al. 2007

Environmental Toxicology

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Interaction of methylmercury and selenium in medaka (Oryzias latipes) on bioaccumulation of pollutants and histopathological changes in liver and gill were studied. Juvenile medaka fish were submitted to a series of waterborne methylmercury chloride (MMC), sodium selenite (Na 2 SeO 3 ) and their mixture for 210 days, respectively. The methylmercury (MeHg) and selenium contents in the whole body of medaka were determined. The dose-and time-dependent increase of MeHg and selenium contents in medaka were observed. Histopathological changes, such as edema, vacuoles, pyknotic nucleus, and telangiectasis, could clearly be observed in the slices from the exposed medaka's liver and gill. Concurrent exposure to MMC and Na 2 SeO 3 showed the increased selenium accumulation. When the exposure molar ratio of MeHg:Se was about 1, the interaction between MeHg and selenium offered a limited protection against the serious intoxication of both MMC and Na 2 SeO 3 to medaka. # 2007 Wiley Periodicals, Inc. Environ Toxicol 22: 69-77, 2007.

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“…Then, 0.8 mg Dynabeads with different surface modification abovementioned were added to cell lysate containing 8 mg protein to immunoprecipitate for 6 h at 4°C, respectively. After magnetic separation, Dynabeads were washed four times with ice-cold PBS and then pretreated using the KBr/CuSO 4 extraction and CH 2 Cl 2 reversed extraction method to capture the MeHg on them [40]. In brief, the KBr (18%, m/V)/CuSO 4 (1.0 M) solution (volume ratio, 3:1) was added to a 15 mL polypropylene (PP) tube containing different Dynabeads, respectively.…”

Section: Immunoprecipitation and Analysis Of Mehgmentioning

confidence: 99%

Arginine decarboxylase: A novel biological target of mercury compounds identified in PC12 cells

Wang

Yang

et al. 2016

Biochemical Pharmacology

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Evaluation of some Isolation Methods for Organomercury Determination in Soil and Fish Samples by Capillary Gas Chromatography—Atomic Fluorescence Spectrometry

Cited by 82 publications

References 22 publications

Macroalgae response to a mercury contamination gradient in a temperate coastal lagoon (Ria de Aveiro, Portugal)

Macroalgae response to a mercury contamination gradient in a temperate coastal lagoon (Ria de Aveiro, Portugal)

Interaction of methylmercury and selenium on the bioaccumulation and histopathology in medaka (Oryzias latipes)

Arginine decarboxylase: A novel biological target of mercury compounds identified in PC12 cells

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