Zobrazeno 1 - 10
of 11
pro vyhledávání: '"E. V. Vanchikova"'
Publikováno v:
Eurasian Soil Science. 55:861-867
Publikováno v:
Eurasian Soil Science. 54:189-200
Strongly acid soils (pHKCl < 3.3) are widespread in the northeast of European Russia and are characterized by the low precision of potentiometric measurements of the components of exchangeable acidity. The goal of our study was to identify the causes
Autor:
E. V. Shamrikova, S. V. Deneva, E. V. Vanchikova, Yu. I. Bobrova, E. V. Kyzyurova, E. V. Zhangurov, T. A. Sokolova
Publikováno v:
Eurasian Soil Science. 51:1397-1410
Exchangeable acidity in samples from organic and mineral horizons of taiga and bog soils with strongly acid reaction (pHKCl < 3.3 and $${\text{p}}{{{\text{H}}}_{{{{{\text{H}}}_{2}}{\text{O}}}}}$$ ≤ 4.4) was determined by the Sokolov method of poten
Autor:
G. A. Zaboeva, E. V. Vanchikova, E. V. Shamrikova, E. V. Kyz'yurova, Yu. I. Bobrova, N. V. Grishchenko, N. V. Bespyatykh
Publikováno v:
Eurasian Soil Science. 49:512-518
A comparative assessment of the results of measuring the exchangeable acidity and its components by different methods was performed for the main mineral genetic horizons of texturally-differentiated gleyed and nongleyed soddy-podzolic and gley-podzol
Autor:
Yu. S. Ovodov, E. V. Vanchikova, Olga A. Patova, Svetlana A Ponomareva, Victoria V. Golovchenko
Publikováno v:
Russian Journal of Bioorganic Chemistry. 41:133-139
To analyze the reliability of determining the weight fraction of protein in the samples of pectic polysaccharides by the optical density of solutions in the ultraviolet and visible regions of the spectrum, a comparison of eleven methods: Flores, Lowr
Publikováno v:
Eurasian Soil Science. 48:169-176
Metrological characteristics—precision, trueness, and accuracy—of the results of measurements of the exchangeable acidity and its components by the potentiometric titration method were studied on the basis of multiple analyses of the soil samples
Publikováno v:
Eurasian Soil Science. 45:939-946
The contents of organic compounds in water extracts from organic horizons of loamy soils with different water contents from the medium taiga zone of the Komi Republic were determined by gas-liquid chromatography and chromatography-mass spectrometry.
Publikováno v:
Eurasian Soil Science. 40:1169-1174
The presence of groups 4 and 5 participating in acid-base equilibria was revealed in samples from mineral horizons of the gley-podzolic soil of the Komi Republic using pK spectroscopy (the mathematical processing of potentiometric titration curves fo
Publikováno v:
Bioorganicheskaia khimiia. 41(2)
For the assay to reliability of determination of the protein content in the pectic polysaccharide samples by absorbance in the ultraviolet and visible regions of the spectrum a comparison of the eleven techniques called Flores, Lovry, Bradford, Sedma
Publikováno v:
Eurasian Soil Science. 39:1084-1088
The possibility to use the oxidation rate of different waters by dichromate as measured by photometry for the determination of the organic carbon content in water extracts from the organic horizons of soddy-podzolic soils (in the Republic of Komi) wa