Vol. 6, Issue 2, Part A (2024)

Ultraviolet rays are an invisible form of light. These rays are located directly after the violet end of the visible spectrum. The sun is the main natural source of ultraviolet radiation. Violet rays are also emitted from lightning or lightning وAny other electrical spark in the air. These rays can be generated artificially by passing an electric current through a gas or vapor such as mercury vapor. Ultraviolet rays are an electromagnetic wave with a shorter wavelength than visible light but longer than x- rays. It is called ultraviolet because the wavelength of violet is the shortest among the colors of the spectrum. Its wave range starts from 400 nanometers to 10 nanometers, and its energy starts from 3 eV to 124 eV. Ultraviolet rays are sometimes called black rays because they cannot be seen with the naked eye, and they are usually symbolized by the first two letters of their name “v.b.” and they have many applications in medicine and lighting. Chemistry, ultraviolet rays are found in sunlight, It is emitted by electric arcing or black light. As ionizing rays, they may cause a chemical reaction and cause many. Of incandescent or fluorescent materials. Many people have realized the effect of ultraviolet rays on the body, causing cases of sunstroke, but the spectrum of these rays has other effects that may be beneficial or harmful to human health, and excessive exposure to these rays may cause skin cancer. And from sunburn. Also, learning a Ultraviolet rays cause damage It destroys harmful organisms and has other beneficial effects. On the other hand, ultraviolet rays Ultraviolet (UV) technology is the use of electromagnetic radiation in the ultraviolet Violet part of the electromagnetic spectrum. This type of radiation is characterized by high energy and the ability to affect materials, Organic and bioactive in multiple ways, making it useful in several large-scale applications.

1** Ultraviolet spectrum**: The electromagnetic spectrum is divided into several sections, including ultraviolet rays. Violet. The UV spectrum includes the short (C-UV), medium (B-UV), and long (A-UV) rays. Each one has unique properties and different effects ** Disinfection of water and air**: UV technology is considered effective in disinfecting and sterilizing water and air by influencing Microorganisms such as bacteria, viruses and fungi, by exposing them to UV rays** Industrial manufacturing and surface treatment**: UV technology is used in industries such as printing, painting, Gluing, and 3D manufacturing, where ultraviolet rays can be used to harden plastic materials And photovoltaic resins quickly and effectively. ** Medical and health applications**: Ultraviolet rays are used in many medical applications such as treating skin diseases and medical sterilization, as well as in the manufacture of medical instruments and medical devices. ** Industrial and research applications**: The technology is used in many industrial applications, such as the polymer industry and plastics, as well as in scientific research in fields such as chemistry and molecular biology. Ultraviolet (UV) technology is used to diagnose coordination complexes for several purposes, including: **Determining the electronic structure**: Ultraviolet-Vis-UV (visible) spectroscopy can be used to study the electronic structure of the complex. This technique depends on the electronic absorption of the complexes, which changes with the change in structure the chemical balance within the solution.