The relative sensitivity factors of a ''khROMDET-1020'' photoionizatio
n detector employing various types of lamps have been measured. Tests
have been carried out with a number of volatile organic compounds, suc
h as acetone, benzene, o-xylene, n-pentane, n-hexane, n-octane, n-buta
nol, that are frequently used as solvents and are typical air pollutan
ts.