Determination of the Mode of Occurrence of As, Cr, and Hg in Three Chinese Coal Samples by Sequential Acid Leaching

In this work, it was aimed to select and propose a feasible as well as an applicable method, or series of methods for the extraction of zinc. After determination of the components of the residue, water leaching, acid leaching and roasting-leaching were performed to reclaim Zn. Roasting-leaching was found to be effectively for Zn extraction by controlling acid mass, roasting duration and temperature as parameters. At the optimum conditions, 0.7 times the amount of H2SO4 at 250 °C for 150 min in roasting, 82.05% of initial Zn content was extracted.

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Determination of cadmium in rice bran oils by ICP-MS with rapid ultrasound-assisted acid leaching extraction

Journal of Consumer Protection and Food Safety ◽

10.1007/s00003-020-01275-0 ◽

2020 ◽

Vol 15 (2) ◽

pp. 193-198

Author(s):

Zhiying Shao ◽

Mei Xue ◽

Qin Liu ◽

Peng Li ◽

Yong Fang ◽

...

Keyword(s):

Rice Bran ◽

Acid Leaching ◽

Icp Ms ◽

Ultrasound Assisted

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Determination of 210Po in air filters from metallurgic industry

Journal of Radioanalytical and Nuclear Chemistry ◽

10.1007/s10967-019-06858-2 ◽

2019 ◽

Vol 322 (3) ◽

pp. 1351-1356 ◽

Cited By ~ 1

Author(s):

Grzegorz Szaciłowski ◽

Jakub Ośko ◽

Tomasz Pliszczyński

Keyword(s):

Thermal Process ◽

Liquid Scintillation ◽

Aerosol Particles ◽

Ferrous Metal ◽

Acid Leaching ◽

Scintillation Counting ◽

Elevated Concentration ◽

Air Filters ◽

Co Precipitation

Abstract The elevated concentration of 210Po attached to aerosol particles inside a non-ferrous metal refinery was studied. The aerosols were collected on Petrianov or glass-fiber filters and subsequently subjected to radiochemical procedure consisting of acid leaching and concentration by micro co-precipitation with manganese oxide. For the activity determination alpha spectrometry and liquid scintillation counting (LSC) were applied. The obtained results showed that usually observed polonium concentration inside the plant was lower than 78 mBq m−3, however short spikes up to 7430 ± 710 mBq m−3 (related to the specific thermal process) were also observed.

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A fast atom bombardment study of the lead isotope ratios in early nineteenth century Niagara Peninsula pottery glazes

Canadian Journal of Chemistry ◽

10.1139/v86-077 ◽

1986 ◽

Vol 64 (3) ◽

pp. 488-491 ◽

Cited By ~ 2

Author(s):

Jack M. Miller ◽

Timothy R. B. Jones ◽

Tina Kenney ◽

David W. Rupp ◽

Brian N. Green ◽

...

Keyword(s):

Nineteenth Century ◽

Lead Isotope ◽

Fast Atom Bombardment ◽

Acid Leaching ◽

Direct Analysis ◽

Isotope Ratios ◽

Local Source ◽

Lead Isotope Ratios ◽

Sedimentary Deposits

The application of fast atom bombardment (FAB) mass spectrometry to the determination of lead isotope ratios in nineteenth century pottery glazes from the Niagara Peninsula has been investigated with the aim of determining the source of the lead used in the glazes. Methods of sampling have been compared, including direct analysis of glass chips, analysis of powdered glaze scrapings, analysis of acid extracts of the former, and simple acid leaching of the surface of a piece of pottery. The latter method gave the best results. The FAB data, as obtained on an older mass spectrometer, can distinguish lead from igneous vs. sedimentary deposits, but is not adequate to determine specific mining locations. Although newer FAB instrumentation can narrow this range, the overlap of data from the Niagara Peninsula and England precludes a simple answer to the archeological question as to English vs. Canadian origin of the lead used in the Jordan pottery glazes. However, the data do suggest that the potter used a local source for the lead.

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I. The rubies of Burma and associated minerals—their mode of occurrence, origin and metamorphoses. A contribution to the history of corundum

Proceedings of the Royal Society of London ◽

10.1098/rspl.1894.0168 ◽

1895 ◽

Vol 57 (340-346) ◽

pp. 386-394

Keyword(s):

British Government ◽

Secretary Of State ◽

History Of ◽

Mode Of Occurrence ◽

The Right

This memoir embodies the results of a series of investigations which were initiated by the Right Hon. Viscount Cross, sometime H. M. Secretary of State for India, shortly after the annexation of Burma by the British Government. The researches were undertaken with a view to the determination of the value of the celebrated ruby mines of that country, and of the conditions under which the gem is found.

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Determination of impurity elements in graphite materials by closed vessel acid leaching/ICP-AES.

BUNSEKI KAGAKU ◽

10.2116/bunsekikagaku.44.19 ◽

1995 ◽

Vol 44 (1) ◽

pp. 19-23 ◽

Cited By ~ 3

Author(s):

Kazuo WATANABE ◽

Kyoichiro TAKASHIMA ◽

Hiroyuki FUKUSHIMA

Keyword(s):

Acid Leaching ◽

Closed Vessel ◽

Impurity Elements

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The Determination of Barium and Antimony in Gunshot Residue by Flameless Atomic Absorption Spectroscopy Using a Tantalum Strip Atomizer

Applied Spectroscopy ◽

10.1366/000370275774455428 ◽

1975 ◽

Vol 29 (1) ◽

pp. 44-48 ◽

Cited By ~ 30

Author(s):

J. A. Goleb ◽

C. R. Midkiff

Keyword(s):

Atomic Absorption ◽

Atomic Absorption Spectroscopy ◽

Acid Leaching ◽

Gunshot Residue ◽

Relative Deviation ◽

Flameless Atomic Absorption ◽

Flameless Atomic Absorption Spectroscopy ◽

Atomic Absorption Technique ◽

Absorption Technique

A flameless atomic absorption technique, employing a tantalum strip atomizer, has been developed to determine barium and antimony in gunshot residue. Cotton swabs, wetted with 5% HNO3, are used to collect residue. Barium and antimony are released from the swabs by acid leaching or plasma ashing. Both techniques give good recoveries; the ashing technique is preferred for blood-stained swabs. The sensitivity for barium is 0.1 ng/10 µl and antimony 0.2 ng/10 µl. At nanogram levels the standard relative deviation for barium is 8.3% and for antimony 8.5%.

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