Pigments through the Ages - Pigments in Oil - WebExhibits
What are Oil Paints? Oil paints are comprised of pigments ground with oils, most commonly linseed oil The mixture of pigment and oil is then dried to the consistency of butter, causing the applied paint to dry slowly without changes in color intensity
According to the National Institute of Environmental Health Sciences, lead is a metal that occurs naturally deep within the ground It also occurs naturally in small amounts in ore, silver, zinc and copper Despite the fact that it occurs in small amounts, there is an abundant supply of lead .
Cadmium is a naturally occurring toxic heavy metal with common exposure in industrial workplaces, plant soils, and from smoking Due to its low permissible exposure to humans, overexposure may occur even in situations where trace quantities of cadmium ,