Welding smoke is a mixture of very fine particles and gases. This smoke can contain, such materials as chromium, nickel, arsenic, asbestos, manganese, silica, beryllium, cadmium, nitrogen oxides, phosgene, acrolein, fluorine compounds, carbon monoxide, cobalt, copper, lead, ozone, selenium, and zinc and they can be extremely toxic. Generally, welding fumes and gases come from the base material being welded or the filler material, but can also come from the paint and other materials on the metal being welded. Chemical reactions can also occur from the heat and even the arc light. These reactants can also be toxic.
Health effects of welding exposures can be difficult to list. The smoke may contain materials not listed or assumed. The individual components of welding smoke can affect just about any part of the body, including the lungs, heart, kidneys, and central nervous system.
Exposure to metal fumes such as zinc, magnesium, copper, and copper oxide can cause metal fume fever. Symptoms of metal fume fever may occur 4 to 12 hours after exposure, and include chills, thirst, fever, muscle ache, chest soreness, coughing, wheezing, fatigue, nausea, and a metallic taste...
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