近十几年来,二烷基硫醚作为贵金属元素的一种新型萃取剂受到了人们的重视.A.B.Hиколаев等曾指出金(Ⅲ)和钯(Ⅱ)可从硝酸和盐酸介质中用二烷基硫醚R_2S(R是C_4H_9-C_(10)H_(21)—的烷基)的苯或其他有机溶剂的溶液萃取出来;银和汞(Ⅱ)可从硝酸介质中被萃取出来;铂(Ⅳ)用二烷基硫醚萃取则很差;铱(Ⅲ)则非常差,其他元素不被萃取. In recent ten years, dialkyl sulfide as a precious metal element of a new extractant has received great attention.ABHиколаев, etc. have pointed out that gold (III) and palladium (II) from nitric acid and hydrochloric acid medium with dialkyl Sulfides R 2 S (R is alkyl of C 4 H 9 C 10 H 21) - or other organic solvents; silver and mercury (II) can be extracted from nitric acid; platinum ) Is very poorly extracted with dialkyl sulfides; iridium (III) is very poor, and other elements are not extracted.