The correct answer is D. all of the above.
Antimony, cadmium, and arsenic are all harmful trace metals that can be found in fly ash. Fly ash is a byproduct of coal combustion, and it is often used as a construction material. However, fly ash can also contain harmful pollutants, including trace metals.
Antimony is a metalloid that is naturally found in the environment. It is also used in a variety of industrial applications, including batteries, semiconductors, and flame retardants. Antimony can be toxic to humans if it is inhaled or ingested. It can cause a variety of health problems, including respiratory problems, skin problems, and cancer.
Cadmium is a heavy metal that is also naturally found in the environment. It is used in a variety of industrial applications, including batteries, pigments, and stabilizers. Cadmium can be toxic to humans if it is inhaled or ingested. It can cause a variety of health problems, including kidney damage, bone disease, and cancer.
Arsenic is a metalloid that is naturally found in the environment. It is also used in a variety of industrial applications, including pesticides, herbicides, and wood preservatives. Arsenic can be toxic to humans if it is inhaled or ingested. It can cause a variety of health problems, including skin problems, nerve damage, and cancer.
Exposure to harmful trace metals in fly ash can occur through inhalation, ingestion, or skin contact. The health effects of exposure to these metals can vary depending on the type of metal, the amount of exposure, and the individual’s health.
If you are concerned about exposure to harmful trace metals in fly ash, you should talk to your doctor. You can also take steps to reduce your exposure, such as wearing a mask when working with fly ash and washing your hands thoroughly after handling it.