Abstract: A fungicidal composition comprising as active ingredient a 2-(O-[substituted]alkyl)-2-thio-1,3,2-oxathiophospholane of the Formula I ##STR1## wherein R.sub.1,R.sub.2, R.sub.3 and R.sub.4 independently from each other stand for hydrogen, C.sub.1-6 alkyl, C.sub.2-6 alkynyl andX represents halogen, hydrogen, C.sub.1-6 alkyl or mercapto. The process for the preparation of the compounds of the Formula I involves phosphorous pentasulfide, alcohols and pyridine. The compositions are wide spectrum fungicides, particularly useful in combating Sclerotinia sp., Penicillium sp., Alternaria sp., Fusarium sp., Phytophthora infestans and powdery mildew.

Abstract: In an electrode arrangement for corona discharges, preferably for use in apparatus for purification of air and other gases and/or air conditioning, an electrode connected to one pole of a high voltage DC source is provided from which project corona discharge electrodes. The other pole of the DC source is connected to a field electrode, which is arranged within the region affected by the corona discharge electrode. With this electrode arrangement, not only particles but also aerosols and gases can be separated out.