In my thesis I researched and presented volatile aldehyde pollutants, their sources, health effects and different possibilities of reducing their concentration in the air. I reviewed the literature on quantitative determination of formaldehyde in indoor air and described several different techniques for sampling and analysis. The most widely used are passive samplers based on 2,4-dinitrophenylhydrazine, which require only quantitative washing of the reaction products from the sampler and quantification by HPLC. I used this method in my experiments, where I analysed different volatile aldehyde pollutants from samplers that had been exposed to air in several different locations of the Vasa museum in Stockholm for seven days. Finally, I compared my results to the ones taken from the first monitoring session six months ago.
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