is acknowledged for supplying the plasma samples tested.
References[l] B. Hedback and L. S. Hermann, Acta Med. Scand. suppl. 681 (1984) 129-134. [2] M. Schomerus, B. Spiegelhalder, B. Stieren, and M. Eichelbaum, Cardiovasc. Res. 10 (1976) 605-61 2. G. Neugebauer, Cardiovasc. Res. 12 (1978) 247-254 G. M. Thomson and L. K. Pannell, J. Anal. Toxicol. 5 (1981) [3] [4] 105-1 09. [5] S. R. Harapat and R. . 70 (1981) V. K. Piotrovskii, D. 0. Ruminatsev, and V. 1. Metelitsa, J. Chromatogr. 275 (1983) 95-200. P. A. Kapur, T. L. Aw, and E. Watson, J. Chrornatogr. 337 222 (1981) 507-51 1. 800-80 1 .(1 985) 160-1 65.
SummarySoil fumigants, like 1,3-dichIoropropene and metham-sodium (forming methyl isothiocyanate) diffuse into the atmosphere, thus presenting a hazard to people in the surroundings. A method is described in which a large volume (50 PI) of extractant, used to desorb the compounds from charcoal, is injected into a GC, equipped with two capillary columns. By way of Deans switching, the solvent is separated from the compounds of interest. Modification of a GC sampler makes unattended analyses possible.