Direct-determination of high-concentration sulfate by serial differential spectrophotometry with multiple optical pathlengths

AbstractWe propose a two-lattice method for direct determination of the recoilless fraction using a single room-temperature transmission Mössbauer measurement. The method is first demonstrated for the case of iron and metallic glass two-foil system and is next generalized for the case of physical mixtures of two powders. We further apply this method to determine the recoilless fraction of hematite and magnetite particles. Finally, we provide direct measurement of the recoilless fraction in nanohematite and nanomagnetite with an average particle size of 19 nm.

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Direct Determination of the Mean Nitrogen Concentration in Connection with Nitrogen Washout with Multiple Breath Method

Scandinavian Journal of Clinical and Laboratory Investigation ◽

10.3109/00365516409060524 ◽

1964 ◽

Vol 16 (3) ◽

pp. 332-338 ◽

Cited By ~ 3

Author(s):

T. Lundman ◽

E. Orinius ◽

I. Ståhle

Keyword(s):

Nitrogen Concentration ◽

Direct Determination ◽

Nitrogen Washout ◽

The Mean

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Direct determination of the tissue-to-blood partition coefficient for Xenon in human subcutaneous adipose tissue

Scandinavian Journal of Clinical and Laboratory Investigation ◽

10.3109/00365518409083624 ◽

1984 ◽

Vol 44 (7) ◽

pp. 643-647 ◽

Cited By ~ 13

Author(s):

Rolf Jelnes ◽

Lars Bjørn Rasmussen ◽

Jens Eickhoff

Keyword(s):

Adipose Tissue ◽

Partition Coefficient ◽

Subcutaneous Adipose Tissue ◽

Direct Determination ◽

Subcutaneous Adipose

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Testing of ceramic and basic materials. Direct determination of mass fractions of impurities in powders and granules of silicon carbide by inductively coupled plasma optical emission spectrometry (ICP OES) with electrothermal vaporisation (ETV)

10.3403/30187542 ◽

2011 ◽

Keyword(s):

Silicon Carbide ◽

Inductively Coupled Plasma ◽

Direct Determination ◽

Optical Emission ◽

Emission Spectrometry ◽

Icp Oes ◽

Inductively Coupled ◽

Mass Fractions ◽

Plasma Optical Emission Spectrometry

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Testing of ceramic raw and basic materials. Direct determination of mass fractions of impurities in powders and granules of silicon carbide by OES by DC arc excitation

10.3403/30187539 ◽

2011 ◽

Keyword(s):

Silicon Carbide ◽

Direct Determination ◽

Mass Fractions ◽

Dc Arc ◽

Arc Excitation

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Polarographic Determination of 6-β-D-Glucopyranosyloxy-7-hydroxycoumarin

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19960333 ◽

1996 ◽

Vol 61 (3) ◽

pp. 333-341

Author(s):

Jiří Barek ◽

Roman Hrnčíř ◽

Josino C. Moreira ◽

Jiří Zima

Keyword(s):

Natural Compound ◽

Mercury Electrode ◽

Direct Determination ◽

Differential Pulse ◽

Differential Pulse Polarography ◽

Whitening Agent ◽

Polarographic Behaviour ◽

Pulse Polarography ◽

Dropping Mercury Electrode

The polarographic behaviour was studied for 6-β-D-glucopyranosyloxy-7-hydroxycoumarin, a natural compound serving as an optical whitening agent. The substance can be quantitated by tast polarography, differential pulse polarography using a conventional dropping mercury electrode, and differential pulse polarography using a static mercury drop electrode over the regions of 20-1 000, 2-1 000, and 0.2-1 000 μmol l-1, respectively. The methods developed for the quantitation of the compound were applied to its direct determination in a raw product.

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