Simple aldehydes, such as formaldehyde, acetal-dehyde and acrolein, are known to be hazardous air pollutants. Aldehydes are emitted from incomplete burning of various organic compounds and from various chemicals, and are formed by photochemical reaction with hydrocarbons in the atmosphere.

Volatile ketones are used as solvents in various chemical plants and laboratories and are emitted into the atmosphere. The toxicity of ketones is, in general, not as high as that of aldehydes. Carbonyl compounds are significant in environmental chemistry, i.e. in rainwater and as a photochemical oxidant.

Separation of aldehydes and ketones is very important for the determination of volatile aldehydes. Usually, analysis of aldehydes is performed by de-rivatization and gas chromatography (GC) or high performance liquid chromatography (HPLC). Selective and sensitive gas chromatographic methods for separation of aldehydes and ketones are described below.

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Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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