# mass concentration

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Related to mass concentration: molar concentration, molarity, Mass fraction

## concentration

[kon″sen-tra´shun]
1. increase in strength by evaporation.
2. the ratio of the mass or volume of a solute to the mass or volume of the solution or solvent.
3. intense mental focus.
hydrogen ion concentration see hydrogen ion concentration.
mass concentration the mass of a constituent substance divided by the volume of the mixture, as milligrams per liter (mg/l).
mean corpuscular hemoglobin concentration (MCHC) the average hemoglobin concentration in erythrocytes, conventionally expressed in “per cent,” meaning grams per deciliter of red blood cells, obtained by dividing the blood hemoglobin concentration (in g/dl) by the hematocrit (in l/l): MCHC = Hb/Hct.
minimal alveolar concentration (MAC) the concentration of anesthetic that at a pressure of 1 atmosphere produces immobility in 50 per cent of subjects exposed to a noxious stimulus.
minimal bactericidal concentration (MBC) the lowest concentration of a given antibiotic required to kill a specific organism.
minimal inhibitory concentration (MIC) the lowest concentration of a given antibiotic that inhibits the growth of a specific organism.
molar concentration the concentration of a substance expressed in terms of molarity.
concentration test a test of renal function based on the patient's ability to concentrate urine; see also fishberg concentration test.

## mass concentration

The mass of a constituent in a solution divided by the volume of the mixture.

## mass concentration

?
The amount of matter of any material divided by its volume. In the metric system, ? is defined in kilograms per liter (kg/L). See: substance concentration; molar concentration
See also: concentration

## concentration

1. increase in strength by evaporation.
2. the ratio of the mass or volume of a solute to the mass or volume of the solution or solvent.

hydrogen ion concentration
an expression of the degree of acidity or alkalinity (pH) of a solution. See also acid-base balance.
mass concentration
the mass of a constituent substance divided by the volume of the mixture, as milligrams per liter (mg/l).
minimum effective concentration
the threshold level of a drug in plasma below which the efficiency of the drug as a treatment drops off sharply.
molar concentration
the amount of a constituent in moles (millimoles or micromoles) divided by the volume of the mixture, as millimoles per liter (mmol/l).
concentration test
a test of renal function based on the patient's ability to concentrate urine. See water deprivation test.
References in periodicals archive ?
The steady-state indoor terpenoid mass concentration, [C.
Mass concentrations of coarse and fine CAPs were relatively strongly correlated with endotoxin and glucan levels (r = 0.
The comparison will include soot mass concentration, solid particle number concentration as well as size distribution.
One of the main indicators influencing the quality of the finished tincture is the indicator of the mass concentration of the crude extract--total concentration of all dissolved substances.
The SWW supplied into an experienced aerotank is administered with surfactant (or surfactant-containing composition) with a constant mass concentration of [S.
By following Einstein's theory of Gravitation, it's well known that a mass concentration would deform locally the Space-Time and the observed shapes of distant galaxies seen through the concentration would be deflected and distorted.
There was an 80% increase in the mass concentration of iodine in bread with the introduction of the fortifying supplement.
This property quantifies the mass ratio of moisture between the phases of refrigerants or, more specifically, the mass concentration of moisture in the vapor phase divided by the mass concentration of moisture in the liquid phase of the refrigerant.
46 wt%), the mass concentration of calcium oxide (CaO) is 0.
The new Thermo Scientific Particulate Matter Continuous Emissions Monitoring System (PM CEMS) improves accuracy by offering true mass concentration that meets the National Institute of Standards and Technology (NIST)-traceable standards for customers seeking to comply with the Utility Mercury and Air Toxics Standards (MATS), Portland Cement Maximum Achievable Control Technology (MACT), and the Industrial/Commercial/Institutional Boiler MACT.

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