Determination of inorganic beryllium species in the particulate matter of emissions and working areas

Profumo, Antonella

doi:10.1016/s0039-9140(02)00134-0

Cited by 26 publications

(10 citation statements)

References 4 publications

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“…Table 2 confirms the superiority of AlN and SiC in the properties including thermal conductivity, coefficient of thermal expansion (CTE) matching that of Si, electrical insulation, and mechanical strength [18][19][20]. Additionally, the non-toxic SiC and AlN are preferred over beryllia (BeO) in the RoHs directed global market for the electronic devices [21,22].…”

Section: Introductionmentioning

confidence: 60%

Review of Net Shape Fabrication of Thermally Conducting Ceramics

Onbattuvelli

Atre

2011

Materials and Manufacturing Processes

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Section: Introductionmentioning

confidence: 60%

Review of Net Shape Fabrication of Thermally Conducting Ceramics

Onbattuvelli

Atre

2011

Materials and Manufacturing Processes

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“…Beryllium. Most published methods for analysis of beryllium are limited to the 'total' mass without regard to form; however, Profumo et al 20 developed a protocol that uses sequential sample digestions to distinguish between the masses of soluble and poorly soluble beryllium compounds. In this protocol, 0.01 M hydrochloric acid is used to dissolve the soluble beryllium fraction followed by increasingly more aggressive acid-assisted digestions to dissolve poorly soluble beryllium metal, oxide, and silicate compounds.…”

Section: Reactant-assisted Digestion Proceduresmentioning

confidence: 99%

Dissolution of the metal sensitizers Ni, Be, Cr in artificial sweat to improve estimates of dermal bioaccessibility

Stefaniak

Duling

Geer

et al. 2014

Environ. Sci.: Processes Impacts

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Dermal exposure to sensitizing metals is a serious occupational and public health problem. The usual approach to dermal exposure assessment is to process samples by chemical methods that use reactants to digest the metal particles and quantify the mass. In the case of dermal exposure assessment, these reactants are not representative of the skin surface film liquids and hence, may overestimate bioaccessibility. We hypothesize that the amount and form of sensitizer on a sample that leaches in a biological fluid, as can be estimated using artificial sweat, may be a more relevant metric for assessing health risks. Beryllium metal (Be), nickel metal (Ni), and chromium carbide (Cr3C2) particles were characterized and masses of sensitizing ions were measured using established reactant-assisted digestion procedures and extraction in artificial sweat under physiologically relevant conditions. Chromium ions released into artificial sweat were speciated to understand valence states. The ratios of the fraction of metal dissolved in artificial sweat relative to that dissolved by chemical-specific reactants were 1/2 (Be), 1/108 (Ni), and 1/2500 (Cr). The divalent Be and Ni cations were stable in artificial sweat over time (did not precipitate) whereas hexavalent chromium [Cr(vi)] ions decayed over time. Further analysis using speciated isotope dilution mass spectrometry revealed that the decay of Cr(vi) was accompanied by the formation of Cr(iii) in the sweat model. Use of reactant-assisted analytical chemistry to quantify amounts of metal sensitizers on samples could overestimate biologically relevant exposure. In addition to mass, the valence state also influences penetration through the outer stratum corneum of the skin and is an important consideration when assessing exposure to complex sensitizers such as Cr which have multiple valence states with differing penetration efficiencies.

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“…Following a scheme already used for other metal species, for example, Cd, 17 Se, 18 Be, 19 Ni, 20 and In, 21 in this paper a sequential extractions procedure is described for the determination of the main inorganic thallium compounds (Tl(0), Tl(I), Tl(III) soluble and insoluble) that are expected to be present in atmospheric particulate matter and in the workplace air of specific industrial production.…”

Section: +mentioning

confidence: 99%

“…These experimental conditions have already been optimized in our previous papers. [17][18][19][20][21] …”

Section: Speciation Proceduresmentioning

confidence: 99%

Determination of Inorganic Thallium Compounds in the Particulate Matter of Emissions and Workplace Air by Sequential Dissolution

et al. 2009

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Inorganic thallium compounds in the atmospheric particulate matter of emissions and in the workplace air of specific industrial production can be determined through selective sequential extractions: Tl(I) is separated from Tl(0) and Tl(III) in the first step, Tl(0) in the second one, while in the final extraction both Tl(III) soluble and insoluble compounds are determined. The procedure has been tested on 1633a Coal Fly Ash standard reference material. The thallium recovery was in the range 91 -98%.

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Determination of inorganic beryllium species in the particulate matter of emissions and working areas

Cited by 26 publications

References 4 publications

Review of Net Shape Fabrication of Thermally Conducting Ceramics

Review of Net Shape Fabrication of Thermally Conducting Ceramics

Dissolution of the metal sensitizers Ni, Be, Cr in artificial sweat to improve estimates of dermal bioaccessibility

Determination of Inorganic Thallium Compounds in the Particulate Matter of Emissions and Workplace Air by Sequential Dissolution

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