substance concentration


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Related to substance concentration: molar concentration, millimolar

substance concentration

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The amount of a specified material or the amount of substance (measured in moles) in the total volume of a system.
See: mass concentration
See also: concentration
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References in periodicals archive ?
Substance concentrations are mostly recoded as positive or negative.
Methodologies for Establishing the Relationship Between Alcohol/Drug Use and Driving Impairment--Differences Between Epidemiological, Experimental, and Real-Case Studies
Active substance concentrations are normally about 70-90% by weight.
Optimization of mixing quality by use of pre-dispersed additives
These levels coincide with increases in the availability of green forage plants, which have high mineral and organic substance concentrations (potassium- estimated maximum of 25 g/kg of dry matter; calcium--estimated maximum of 11 g/kg of dry matter; magnesium--estimated maximum of 3 g/kg of dry matter; phosphorus--estimated maximum of 2.5 g/ kg of dry matter; and, protein--estimated maximum of 25 g/kg of dry matter).
Nutrient composition of milk from domesticated taiga moose during the lactation period
Testing lower substance concentrations would indicate specific hazardous levels.
Copper Toxicity Testing of Juvenile Mussels (Utterbackia imbecillis): Acute and Chronic Effects
Information about the substances used to determine the BR for each test method, the number of experimental runs conducted and the substance concentrations used is provided in Appendix 1, Tables S1.1-S1.4 in the supplementary file at doi:10.14573/altex.1606271s.
The Borderline Range of Toxicological Methods: Quantification and Implications for Evaluating Precision
This means that comparing concentrations of the three molecules is difficult, requiring several assumptions and relatively complex calculations to obtain the values in substance concentrations (9).
Establishment, value assignment, and characterization of new WHO reference reagents for six molecular forms of human chorionic gonadotropin
Other aims were to introduce a uniform nomenclature, to prepare new standards, and to assign values to these in substance concentrations (mol/L).
Standardization of assays for human chorionic gonadotropin
Because amino acid analysis reflects the molar content of protein, it would be advisable to start using substance concentrations (mol/L) for hK2 as has been done with the recently issued WHO standards for chorionic gonadotropin (7).
Standardization as a private enterprise
Because substance concentrations were not normally distributed, the Mann-Whitney U-test, Wilcoxon rank-sum test, or the Kruskal-Wallis test was used when appropriate.
Analysis of volatile disease markers in blood

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