ABSTRACT
This short chapter describes two associations of sulfur that have been exploited within the biological field and which have not been covered elsewhere in this book, namely the inorganic sulfur-selenium combinations and the organic sulfurphosphorus compounds. It is true that sulfur can form a vast array of inorganic compounds with many elements, as has been admirably covered in the chapter on sulfur chemistry, and details of inorganic toxicities (e.g. the airborne toxins, sulfur dioxide and hydrogen sulfide) have been mentioned in other chapters and can also be gleaned from excellent comprehensive works on toxicology (Ellenhorn and Barceloux 1988, Hayes 1982, Kurt 1983, Lilis 1983, Rom and Barkman 1983, Sorbo 1972).
