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2 342 (0,079s)

Result

As AND Se HYDRIDE TRAPPING AT THE QUARTZ SURFACE - A STEP FORWARD TO IN-SITU TRAPPING IN QUARTZ TUBE ATOMIZERS FOR AAS

An optimization study of arsine and selenum hydride preconcentration at the quartz surface is presented. A novel apparatus design consisting of a quartz trap integrated with a quartz multiatomizer is described....

CB - Analytická chemie, separace

  • 2007
  • D
Result

Arsine and selenium hydride trapping in a novel quartz device for atomic-absorption spectrometry

An optimization study of arsine and selenum hydride preconcentration at the quartz surface is presented. A novel apparatus design consisting of a quartz trap integrated with a quartz multiatomizer is described....

CB - Analytická chemie, separace

  • 2007
  • Jx
Result

EXPERIMENTAL STUDY OF ANISOTROPY OF QUARTZ DISSOLUTION AND ITS ROLE IN FLUID MIGRATION IN ROCKS

Quartz dissolution in hydrothermal-metasomatic processes is common feature in magmatic and metamorphic quartz rich rocks. This experimental work aims to compare the dissolution of individual quartz faces and to clarify the ...

DB - Geologie a mineralogie

  • 2016
  • Jx
  • Link
Result

Oriented sillimanite inclusions in quartz in granites of the Melechov massif

and oriented inclusions of acicular sillimanite in quartz are very abundant. This is valid quartz grain). In sections perpendicular to the c-axis of quartz, hexagon-shaped the rim of the quartz grain. The outer sh...

DB - Geologie a mineralogie

  • 2008
  • Jx
Result

Cracking of quartz porcelain during heating stage of firing

of microcracking in the green quartz porcelain mixture (50 wt. % kaolin, 25 wt. % quartz and 25 between thermal expansions of crystals (kaolinite/metakaolinite, feldspar and -quartz/-quartz). The transformation of...

BM - Fyzika pevných látek a magnetismus

  • 2011
  • D
Result

On the internal radioactivity in quartz

The internal dose rate in optical luminiscence dating of sedimentary quartz was studied by determination of U and Th concentrations in various quartz fractions by neutron activation analysis....

BG - Jaderná, atomová a molekulová fyzika, urychlovače

  • 2008
  • Jx
Result

Trace elements in quartz from Li-enriched pegmatite

Quartz from complex LCT pegmatites has similar evolutionary trend as quartz with the most fractionated peraluminous granites, pegmatitic quartz is relatively depleted in Li,but strongly enriched in Ge. Minerals associated w...

DB - Geologie a mineralogie

  • 2014
  • Jx
Result

Preamplifier for quartz tuning fork signal

Preamplifier is used for amplification of weak current signals, which are produced by quartz crystal based AFM probes, especially probes based on quartz tuning fork with voltage excitation. Preamplifier comprises also second channel...

BM - Fyzika pevných látek a magnetismus

  • 2013
  • Gfunk
  • Link
Result

Platform for attachment of quartz crystal microbalances

A functional sample platform for quartz crystal microbalance (also referred to as QCM) attachment is a technical solution to enable the use of quartz crystal mounting of quartz crystal microbalance sensors must meet three b...

Analytical chemistry

  • 2023
  • Gfunk
Result

Stibine preconcentration in a quartz trap with subsequent atomization in the quartz multiatomizer for atomic absorption spectrometry

A preliminary evaluation of a simple (bare) quartz tube trap for collection of SbH3, and for volatilization of trapped analyte with subsequent atomization in a multiple microflame quartz tube atomizer (miltiatomizer) for atomic abso...

CB - Analytická chemie, separace

  • 2004
  • Jx
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