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Oreshkin, V. N.; Tsizin, G. I.

doi:10.1023/a:1012596406304

Cited by 4 publications

(5 citation statements)

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“…The basic model of the block was consid ered elsewhere [13]. Atomization block was mounted at a Saturn 2 AA spectrophotometer and another apparatus with a deuterium background corrector [7,9,13]. Before the experiments, graphite atomizerevaporators were annealed at a temperature of 2500°C to eliminate impurities.…”

Section: Electrothermal Atomizer-evaporators: Equipmentmentioning

confidence: 99%

“…The technique is given in [7]. The duration of sorption (50 mL of the sample and 50 mg of the sorbent) with stirring was 60 min.…”

Section: Preparation Of Unfiltered and Filtered Water Samples In A Crmentioning

confidence: 99%

“…Solid samples of suspended matter or concentrates may be placed into atomizers [6][7][8]. The most promising technique is to obtain concentrates directly in the atomizer; under laboratory conditions, elements are concentrated on a solid diethylenetri amine tetraacetate (DETATA) sorbent and suspended matter is separated from water and solution samples in a microcolumn crucible.…”

Section: Introductionmentioning

confidence: 99%

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Sample preparation in crucible atomizers for determining cadmium and lead in natural water by atomic absorption

Oreshkin

Tsisin

2015

Moscow Univ. Chem. Bull.

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In the determination of trace elements in samples of natural water in crucible electrothermal atomizers, it is promising to carry out two consecutive stages of sample preparation, i.e., the dynamic precon centration of dissolved forms of elements on a solid sorbent with the simultaneous separation of suspended matter and subsequent thermal decomposition of the concentrate with fractional evaporation condensation of an analyte. This approach allows us to reduce the risks of introducing impurities and losses of elements. The first stage of sample preparation can be executed under field conditions out of the laboratory.

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Section: Electrothermal Atomizer-evaporators: Equipmentmentioning

confidence: 99%

“…The technique is given in [7]. The duration of sorption (50 mL of the sample and 50 mg of the sorbent) with stirring was 60 min.…”

Section: Preparation Of Unfiltered and Filtered Water Samples In A Crmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sample preparation in crucible atomizers for determining cadmium and lead in natural water by atomic absorption

Oreshkin

Tsisin

2015

Moscow Univ. Chem. Bull.

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“…Russian researchers 143 have developed an ETAAS instrument with two vaporization zones for the simultaneous determination of Cd, Hg and Pb in sea and river waters.…”

Section: Atomic Absorption Spectrometrymentioning

confidence: 99%

“…The simplified chemical separation employs mainly HCl as the eluting reagent, resulting in rapid purification in three working days. The same Chinese research group381 demonstrated precise and accurate measurements of143 Nd/144 Nd without separating Nd from Sm.Instrumental mass discrimination was corrected using146 Nd/144 Nd as an internal standard, after correction of the isobaric interference of144 Sm on144 Nd using interference-free147 Sm/149 Sm for mass fractionation. Their data indicated that the mass discrimination of Sm and Nd was not the same and varied during an analytical session, hence the need to calculate mass biases for each element on individual samples.Martin et al…”

mentioning

confidence: 99%