Colorimetry is a scientific technique for determining the color spectrum of solutions and solutions. The application of the Beer-Lambert law, which states that the application of the solute is equal to its application. It measures absorption power and wavelength between 400 nm and 700 nm (nanometer) rotation. from the point of view of the light spectrum of
different types of electromagnets.
Colorimeter Standards: Colorimeter is a light sensor that can be used to determine color combinations and solutions. The principle is based on the fact that when monochromatic light passes through chromatic compounds, chromatic compounds can absorb part of the light. The colorimeter is based on the photometric system, which states that a flame of energy (lo) penetrates the solution.
Part of the incident light is reflected (Ir).
Parts of the incident light (lt) are let through
Part of the fire incident swallowed your whole heart (la).
lo = Ir + lt + la
Here the value or light indicates Ir as high as lo and its values are sufficient to calculate la. The standard for the amount of light incident and transmitted is measured by holding Ir constant. The relationship between the number of lights applied
and to pay attention to the object (Beer-Lambert law)
Features of the colorimeter and their functions:
The basic components of a colorimeter are as follows.
- Light Source: The most commonly used light source and colorimeter is tungsten filament.
- The monochromator. It fashionably splits the light into different wavelengths under the beam.
- Sample holder: Test tubes or cuvettes with a color sample solution are located here. They are made of glass with a long visible wavelength.
- Photographic alarm system: When a fire breaks out in an alarm system, electricity is generated. This is reflected
- Gauge: (Galvanometer) This serves as a
a visitor device where it converts an electrical signal into a reading that corresponds to the power supply.
Application of the colorimeter
- Colorimeter is usually used to determine the color spectrum by measuring sensitivity or density.
- In the case of colorless compounds, the appropriate reagent is introduced, which gives a color when mixed. This is also thrown in the opposite color
known principles of standard solutions.
- The reaction pattern and color can be determined by checking the formation and removal speed of the hot rod.
- Colorimeter can also create a variable that allows it to identify a gift by validating the input.
Principles and Applications of the Spectrophotometer
Spectrophotometry is a method of determining the amount of light emitted by a chemical by measuring the intensity of light as light passes through the probe.
Solution. The basic premise is that light is absorbed or transmitted through certain types of air.
The spectrophotometer is an application of this
The heat of the sample absorbs. It works by transmitting light flux through a probe to measure the thermal energy of a sample. These materials are used to measure the correct color during production. Manufacturers and researchers often use them for sample solutions, photoelectric detectors and digital displays or measurement devices.
The probe usually consists of two probes, a spectrometer and a fotometer. a spectrometer is a device that produces, disperses and converts light. Cameras refer to photoelectric sensors that measure light energy.
Spectrometer: Produces the required long wavelength. First, the collimator (lens) transmits a vertical beam (photo) that passes through a monochromator (prism) to split it into several wavelengths (spectrum). Then the one who prefers waves (simple) leaves only the required long wavelength.
Camera: When the desired light intensity passes through the solution of the sample on the cuvette,
Application of spectrophotometer
The main use of spectrophotometers is limited because they are used in commercial and industrial applications. It helps to ensure that the selected color remains consistent from its original idea to its final finish. Some applications include:
i) Detection of English concentration
(ii) detecting impurities
iii) elucidation of the organic compound
(iv) monitor the level of dissolved oxygen in clean water and the aquatic environment.
v) identification of protein
vi) Identify a working group
vii) Clinical breathing tests
viii) Determination of the molecular weight of a compound
(ix) Visual and UV spectrophotometer can be used
Find out the classroom and state of purity as well as in the preparation of life.
Differences between colorimeter and spectrophotometer
Color spectroscopy and spectrophotometer are used for measurement english color palette. And their chemistry is used especially to measure color absorption by solution. The difference between a colorimeter and a spectrophotometer can be seen in the following areas:
- Function: Colorimeter is a device that measures the reception of a single color while the spectrophotometer measures the transmission or display of color in the longitudinal measurement function.
- Range colorimeter: operates only on light in the optical part of the electromagnetic spectrum, while the spectrophotometer works in infrared and ultraviolet light as well as optical light.
- Cost: Colorimeters are cheaper compared to spectrophotometers. Spectrophotometer has a much wider range
Extensive work that involves the work of painting. Therefore, it is more expensive than paint.