Methanethiol is an important odorant from pig houses, but it can be difficult to measure due to low concentrations, high volatility and becauseit easily reacts to form dimethyl disulphide. A method was developedfor sampling and measuring methanethiol with minimum artefact formation using sorbent materials and thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS). As odour from pig production can be a nuisance to neighbours, a non-thermal plasma system for odour removal was tested on emissions from pig houses. The experiments showed good removal for some odorants, especially indole and 3-methyl-1H-indole, and a high degree of particle removal. Gas/particle partitioning of odorants in a pig house was also investigatedand a method for measuring odorants in particles by filters and TDGC-MS was developed and evaluated. Only low concentrations and low fractions of odorants were found in the particle phase, thus the contribution to odour from particles was evaluated to be limited
