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Related Concept Videos

Density00:56

Density

18.8K
Density is an important characteristic of substances, crucial in determining whether an object sinks or floats in a fluid. Its SI unit is kg/m3, and its cgs unit is g/cm3. The density of an object helps in identifying its composition, and also reveals information about the phase of the matter and its substructure. The densities of liquids and solids are roughly comparable, consistent with the fact that their atoms are in close contact. However, gases have much lower densities than liquids and...
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Density, Specific Weight, Specific Gravity and Compressibility of Fluid01:27

Density, Specific Weight, Specific Gravity and Compressibility of Fluid

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Density, specific weight, specific gravity, and compressibility are fundamental properties of fluids. Density is the mass per unit volume, characterizing the mass of a fluid system. It influences buoyancy, pressure, flow dynamics, viscosity, thermal conductivity, and sound propagation. For instance, in pipeline design, accurate density measurements ensure that the pipeline can handle the fluid's mass.
Specific weight represents the weight per unit volume and is calculated by multiplying...
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Atomic Absorption Spectroscopy: Lab01:21

Atomic Absorption Spectroscopy: Lab

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For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
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Deriving the Speed of Sound in a Liquid01:09

Deriving the Speed of Sound in a Liquid

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As with waves on a string, the speed of sound or a mechanical wave in a fluid depends on the fluid's elastic modulus and inertia. The two relevant physical quantities are the bulk modulus and the density of the material. Indeed, it turns out that the relationship between speed and the bulk modulus and density in fluids is the same as that between the speed and the Young's modulus and density in solids.
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Precipitation Gravimetry01:03

Precipitation Gravimetry

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Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
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UV–Vis Spectroscopy: Beer–Lambert Law01:09

UV–Vis Spectroscopy: Beer–Lambert Law

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The Beer-Lambert law describes the relationship between absorbance and concentration, which combines the principles established by scientists Johann Heinrich Lambert and August Beer. Lambert's law states that when light passes through a medium, the loss in intensity is directly proportional to the original intensity and the path length of the light. Beer's law proposed that the transmittance of a solution remains constant if the product of concentration and path length is constant. The modern...
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Measuring the Densities of Aqueous Glasses at Cryogenic Temperatures
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Determining the density of liquid using gamma scattering method.

Huynh Dinh Chuong1, Nguyen Thi Hai Yen2, Nguyen Thi My Le3

  • 1Nuclear Technique Laboratory, VNUHCM-University of Science, Ho Chi Minh City, Viet Nam.

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
|May 12, 2020
PubMed
Summary

This study introduces a gamma scattering method to measure liquid density using a cylindrical tube. The method relies on a linear relationship between scattering peak ratio and density, achieving high accuracy (4.3% deviation).

Keywords:
DensityGamma scatteringMCNPMonte CarloNaI(Tl)

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Area of Science:

  • Nuclear Physics
  • Materials Science
  • Analytical Chemistry

Background:

  • Accurate liquid density determination is crucial for various scientific and industrial applications.
  • Traditional methods can be complex or require significant sample volumes.
  • Gamma scattering offers a non-invasive approach for density measurements.

Purpose of the Study:

  • To develop and validate a novel approach for determining liquid density using gamma scattering.
  • To establish a linear calibration model based on the ratio of gamma scattering peaks.
  • To investigate the influence of cylindrical tube diameter on the calibration model.

Main Methods:

  • Utilizing gamma scattering to measure the ratio (R) of scattering peak areas for liquids relative to water.
  • Establishing a linear calibration curve (R vs. density) for different cylindrical tube diameters.
  • Expressing calibration curve coefficients (slope, intercept) as functions of tube diameter.

Main Results:

  • A linear relationship between the scattering ratio (R) and liquid density was confirmed within a specific density range.
  • Calibration curve coefficients were successfully modeled as functions of tube inner diameter.
  • The method accurately determined the densities of five different liquids with a maximum relative deviation of 4.3%.

Conclusions:

  • The proposed gamma scattering method provides a reliable and accurate approach for liquid density determination.
  • The developed mathematical functions allow for precise calibration based on tube geometry.
  • This technique offers a practical alternative for density measurements in various liquid samples.