Chemicals tested include VOCs, formaldehyde and other harmful particles.

Major pollutants reported by the study included acrolein, manganese compounds, sulfuric acid, formaldehyde, and acetaldehyde.

The gas phase includes carbon monoxide, ammonia, dimethylnitrosamine, formaldehyde, hydrogen cyanide and acrolein.

Other preservatives include formaldehyde (usually in solution), glutaraldehyde (kills insects), ethanol and methylchloroisothiazolinone.

Major pollutants indicated by the study include formaldehyde, sulfuric acid, acetaldehyde, manganese compounds, and chlorine dioxide.

The air toxics emitted from stationary engines include formaldehyde, acrolein, acetaldehyde and methanol.

These compounds include methanol, methyl amines, formaldehyde, and formate.

Common fixatives include formaldehyde, ethanol, methanol, and/or picric acid.

VOCs include benzene, formaldehyde, and butadienes which are known to cause health problems such as birth defects, cancer, and skin irritation.

Other separations include noble gases, N, O, freon and formaldehyde.