Table of Contents
What is the principle of turbidimetry?
In turbidimetry, an incident beam of visible light is passed through a sample in a cuvette, and the intensity of the transmitted light is then measured. As Ag:Ab complexes form, light is increasingly scattered away from the incident light path, resulting in a reduction in transmitted light intensity.
What is Nephelo turbidimetry?
nephelometry and turbidimetry, in analytical chemistry, methods for determining the amount of cloudiness, or turbidity, in a solution based upon measurement of the effect of this turbidity upon the transmission and scattering of light.
What is the source of light in Nephelo turbidity meter?
Suitable monochromatic light sources include light emitting diodes, lasers and mercury lamps. As the concentration of particles increases, more particles reflect the incident light, which increases the intensity of the scattered light.
Which light is measured in turbidimetry?
Turbidimetry is based on the measurement of the loss of intensity of transmitted light in an emulsion (or solution containing fine particles) due to the scattering effect of particles suspended in it. Nephelometry is based on the measurement of scattered light by a solution containing fine particles.
What is the principle of turbidimetry Mcq?
Principal :- Turbidimetry is concerned with the measure of the intensity of the transmitted light as a function of concentration of the suspended particle in a suspension. The intensity of transmitted light is measured in a line i.e 180° to the incident light.
Which turbidity meter works on the principle of scattering of light?
Turbidity is an optical property of water based on the amount of light scattered and absorped by collodial and suspended particles. The turbidity value measured in FNU, FTU, NTU etc. is the quantitative statement of this qualitative phenomenon.
What is principal of turbidimetry a light scattered B light transmitted C A and BD none of the above?
Principal :- Turbidimetry is concerned with the measure of the intensity of the transmitted light as a function of concentration of the suspended particle in a suspension. The intensity of transmitted light is measured in a line i.e 180° to the incident light. Hence concentration is more transmission is less.
What is nephelometry and turbidimetry?
Principle and Theory of Nephelometry and Turbidimetry: The principle of nephelometry and turbidimetry is based on the scattering or absorption of light by solid or colloidal particles suspended in solution.
What are the common radiation sources used in Nephelo-turbidimetric analysis?
Mercury arc lamp or Laser light are some of the commonest radiation sources used in nephelo-turbidimetric analysis however later is advantageous owing to its capability of emitting monochromatic beam compared to tungsten lamp, which exceptionally emits polychromatic light beam
How is scattered light measured in nephelometry?
In nephelometry light is passed through the sample solution (suspended particles) directly and the amount of scattered radiation is measured generally at 90°C (Fig.6). The measurement of intensity of scattered light as a function of concentration of dispersed phase is the basis of analysis of nephelometry.
How do you measure turbidimetry?
Turbidity can be measured using the techniques of turbidimetry or nephelometry (from nephelo =cloud (Greek)). Turbidimetry is the measurement of turbidity by quantifying the degree of ‘attenuation’ of a beam of light of known initial intensity.