Ra. Ketola et al., ANALYSIS OF VOLATILE ORGANIC SULFUR-COMPOUNDS IN AIR BY MEMBRANE INLET MASS-SPECTROMETRY, Analytical chemistry, 69(22), 1997, pp. 4536-4539
The suitability of membrane inlet mass spectrometry (MIMS) for the ana
lysis of volatile organic sulfur compounds (VOSCs) in air samples was
studied, A custom-made gas calibrator proved to be a more accurate, ra
pid, and convenient way to produce gas standards than gas bags, and th
erefore, it was used in the evaluation of the suitability of MIMS for
the analysis of VOSCs in air samples, The detection limits of volatile
sulfur compounds were a few micrograms per cubic meter, the measured
dynamic ranges were 4 orders of magnitude, the calculated correlation
coefficients were between 0.9972 and 0.9994 at concentration levels of
10-370 mu g/m(3), and repeatabilities defined as a relative standard
deviation of six successive injections were in the range of 1.3-7.3%.
The results indicate that MIMS is an excellent method for the analysis
of VOSCs in air samples.