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standard samples
A method is developed for the separate determination of aluminum and beryllium using cellulose as the support; the method was used for the analysis of real samples and tested with standard samples.
      
IUPAC Recommendations for Reference Standard Samples in pH Measurements
      
Designing of Standard Samples for Determining the Sensitivity of Eddy-Current Devices to the Metal Inclusion Content in a Parama
      
The reasons of the wide propagation and the high effectiveness of using standard samples of magnetically soft materials are explained.
      
A numerical analysis of these errors is performed using standard samples as examples.
      
A technique for determining the quantitative characteristics of the films (hydrogen content, ratio of different types of carbon-carbon bonds and hydrocarbon groups) using standard samples is described.
      
Qualitative analysis and comparison of the results with the data gained for graphite and pyrocarbon standard samples indicate a high chemical purity for the diamond-like coatings obtained.
      
The value of the 205Tl/203Tl normalizing ratio was analytically determined through isotope analyses of the NIST SRM 981, and SRM 982 standard samples of Pb-isotope composition.
      
Samples with a density of ~30 kg/m3 were prepared to have other mechanical properties practically identical to those of standard samples with a density of ~37-47 kg/m3.
      
The practical methods and algorithms are described to calculate the adequate calibration models from a collection of the standard samples based on the application of the international standard ISO 11095.
      
Applications of numerical simulation methods are investigated for construction of calibration functions under variation of the initial data concerning standard samples within the intervals of their attested values.
      
High-precision timing of the Quaternary standard samples with thermal ionization mass spectrometry (TIMS) U-series method
      
Some results for standard samples and microwave absorbing materials are given.
      
Standard samples of wood tar residue, engine oil, and metal organic compounds have been tested.
      
This method was effectively used to identify complex mixture such as coal tar without any standard samples, especially, adapted for isomeric compounds.
      
The recovery was tested using standard samples containing known amounts of glycerol.
      
To obtain standard samples of components of camomile oil semi-preparative TLC was used.
      
The results showed that adulterated samples and also the type of organic solvent used in adulteration can be detected by comparison of chromatographic profiles (standard samples versus adulterated samples).
      
This method has been applied to the analysis of trace antimony in standard samples of sediment GSD-12 and ore GBW07236 with satisfactory results.
      
Several element peaks on a gelfiltration column were identified by comparison with standard samples.
      
 

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