With the development of industrialization, there has been an increase in toxic heavy metal exposure in working environments. Heavy metals accumulate in the body over time and cause adverse health conditions. The heavy metals with the highest poisoning effect are lead, mercury and cadmium. Heavy metals enter the human body by mouth, respiration and skin and cause chronic and acute poisoning.

As the use of metals and heavy metals increased in industrial plants, a significant increase was observed in occupational diseases. Then, environmental problems started to occur due to pollution of soil and water resources. When lead, mercury and cadmium as well as heavy metals such as chromium, copper and arsenic are examined in ecological systems, it is seen that the enterprises have a great effect on this.

Heavy metals used in the enterprises affect building blocks as carcinogens and mutogens in workers and show allergen effects. If heavy metals exceed the concentration limit, they show poisoning effects on the human body.

Negative interactions due to metals and heavy metals have been busy more recently due to the increase in mining and industrial activities.

The Occupational Health and Safety Law, which was enacted in 2012, regulates the responsibilities and obligations for both employers and employees in order to ensure occupational health and safety in various businesses and to improve the existing health and safety conditions. Under the law, employers are obliged to ensure the health and safety of employees for their work in the workplace. Within this framework, they are obliged to have the necessary test, measurement and analysis studies in the working environment.

Authorized laboratories also carry out heavy metal exposure measurements within the scope of personal exposure measurements. However, these laboratories must be accredited from a national or international accreditation body in accordance with the standard of TS EN ISO / IEC 17025 General Requirements for the Competence of Testing and Calibration Laboratories.