A time-based flow injection–cold vapor–atomic absorption spectrometry system with on-line microwave sample pre-treatment for the determination of inorganic and total mercury in urine1Presented at the Flow Analysis VII Conference held in Piracicaba, Brazil from 23–26 August 1997.1

Gallignani, Máximo; Bahsas, H; Brunetto, Marı́a del Rosario; Burguera, M.; Burguera, J.L.; Peña, Yaneira Petit de

doi:10.1016/s0003-2670(98)00217-7

Cited by 58 publications

(30 citation statements)

References 36 publications

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“…Microwave oven digestion is also currently adopted for preparing environmental and biological samples for the determination of total mercury by CVAAS [51,52,53]. elemental mercury with SnCl 2 and the total mercury content is measured after sample mineralization [51,54].…”

Section: Determination Of Total Mercurymentioning

confidence: 99%

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Voltammetric determination of methylmercury and inorganic mercury with an home made gold nanoparticle electrode

et al. 2009

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This study outlines the development of a procedure for the determination of methylmercury by anodic stripping voltammetry at a gold nanoparticle-modified glassy carbon electrode (AuNPs-GCE) and for the differentiation between methylmercury and inorganic mercury. The signal of methylmercury was measured in the square wave mode using HCl as the supporting electrolyte. The procedure had good accuracy, repeatability and linearity. The determination of total mercury in solutions containing both methylmercury and inorganic mercury was performed after converting the former into the inorganic form. Different sample solution pre-treatments were tested for this purpose, and an acid digestion in a microwave oven with HNO 3 and H 2 O 2 was found to be the most effective. The selective determination of methylmercury in the presence of inorganic mercury was possible after masking the latter through reduction to the elemental state with SnCl 2 . The amount of inorganic mercury was determined by difference.

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Section: Determination Of Total Mercurymentioning

confidence: 99%

“…elemental mercury with SnCl 2 and the total mercury content is measured after sample mineralization [51,54].…”

Section: Determination Of Total Mercurymentioning

confidence: 99%

Voltammetric determination of methylmercury and inorganic mercury with an home made gold nanoparticle electrode

et al. 2009

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“…The results are also listed in Table 2 and show no significant difference at a 95% confidence level (paired t test). In addition, the proposed method presented superior sample throughput when compared with other methods in the literature, but with comparable LOD and LOQ and life of the graphite tube (483 firings) [16,[20][21][22][23][24].…”

Section: Horrat Value = Rsd R / Prsdrmentioning

confidence: 93%

Total Mercury Determination in Muscle and Liver Tissue Samples from Brazilian Amazon Fish Using Slurry Sampling

Queiroz

Vieira

Bataglioli

et al. 2017

Biol Trace Elem Res

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This paper presents a slurry sampling method for total mercury determination by graphite furnace atomic absorption spectrometry (GFAAS) in tissue of fish from the Amazon. The tissue samples were lyophilized and macerated, and then the slurry samples were prepared by putting 20 mg of tissue, added to a solution containing Triton X-100, Suprapur HNO 3 , and zirconium nitrate directly in sampling vials of a spectrometer. Mercury standard solutions were prepared under the same conditions as the slurry samples. The slurry samples and the mercury standard solutions were sonicated for 20 s. Twenty microliters of slurry samples were injected into the graphite tube, which contained an internal wall lined with tungsten carbide. Under these conditions, it was possible to thermally stabilize the mercury up to an atomization temperature of 1700 °C. The method was validated by mercury determination in reference materials DORM-4 and DOLT-4. The LOD and LOQ were 0.014 and 0.045 mg kg −1 , respectively, and recovery percentages in relation to the concentration values were certified in the order of 98%.

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“…Traditionally, SnCl2 is used for the determination of mercury by cold vapor atomic absorption spectrometry. Occasionally, SnCl2 has also been used as a reductant for speciation analysis of mercury, but additional pretreatments such as microwave digestion 31 or UV irradiation 32 with or without oxidation reagent before reducing MeHg to Hg 0 is necessary. It was found in this work that SnCl2 cannot reduce MeHg to Hg 0 , except under UV irradiation.…”

Section: Selection Of the Reductantmentioning

confidence: 99%

UV Irradiation Controlled Cold Vapor Generation Using SnCl2 as Reductant for Mercury Speciation

Zhang

Zheng

et al. 2006

ANAL. SCI.

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A time-based flow injection–cold vapor–atomic absorption spectrometry system with on-line microwave sample pre-treatment for the determination of inorganic and total mercury in urine1Presented at the Flow Analysis VII Conference held in Piracicaba, Brazil from 23–26 August 1997.1

Cited by 58 publications

References 36 publications

Voltammetric determination of methylmercury and inorganic mercury with an home made gold nanoparticle electrode

Voltammetric determination of methylmercury and inorganic mercury with an home made gold nanoparticle electrode

Total Mercury Determination in Muscle and Liver Tissue Samples from Brazilian Amazon Fish Using Slurry Sampling

UV Irradiation Controlled Cold Vapor Generation Using SnCl2 as Reductant for Mercury Speciation

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