Abstract
Particles in suspension come mainly from pollutant emissions generated by industry, traffic, home heating, etc. Due to these particles, various diseases can occur, such as lung cancer, asthma, cardiovascular diseases. An important problem is represented by the particles with an aerodynamic diameter of less than 10 micrometers, which pass through the nose and throat and enter the alveoli of the lungs causing inflammation and intoxication. This paper aimed to establish the chemical composition of residual powders in a production hall from the automotive industry, to identify the source of release. For this, the infrared spectrometry (FTIR) method, the inductively coupled plasma optical emission spectrometry (ICP-OES) method, and the x-ray spectrometry (XRF) method were used. Two samples of dust from different locations of the production hall were analyzed, as well as a substance used in the process, to determine whether the dust came from its use. A series of safety data sheets for substances used in the technological process was also analyzed. The results obtained from the qualitative and quantitative determinations were evaluated considering the chemical composition of all substances involved, leading to the identification of the residual dust release source.
Highlights
In order to ensure the protection of human health, knowing the aspects regarding the environmental factors is an essential activity
This paper presents some results of research elaborated in order to establish the chemical composition of some residual powders from a production hall in the automotive industry, to identify the source of release
The determination of the chemical composition of the residual powders to identify the source of release was performed for three samples: two of these samples were in the form of powder (Kefel powder – Sample 1 and injection powder – Sample 2) and one in the form of a liquid (Molykote white liquid – Sample 3)
Summary
In order to ensure the protection of human health, knowing the aspects regarding the environmental factors is an essential activity. Suspended powders are small fragments of solids or liquids that can float in the air. If they are small enough in diameter to maintain stability in the air or any other gas, they may form an aerosol. Larger and even visible powders, with diameters up to 1000 μm, due to their weight, tend to deposit very quickly. They can cause irritation to the eyes, nose, or throat, these particles are not small enough to reach the lungs. Breathable particles are those located in the range of 0.005 μm - 10 μm, but only those in the range 0.1 - 10 μm are of increased interest because particles with a diameter smaller than 0.1 μm can be expired [1]
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