Method for removing and for a qualitative - analytical determination of cyanide accomplished in contaminated

摘要

PCT No. PCT/EP88/01169 Sec. 371 Date Jul. 24, 1990 Sec. 102(e) Date Jul. 24, 1990 PCT Filed Dec. 16, 1988 PCT Pub. No. WO89/05708 PCT Pub. Date Jun. 29, 1989.A protective hood for a tool holder with a conical part and a draw-in member connected thereto is disclosed, wherein the protective hood has a cover piece, which is adapted to the conical part and envelops this conical part so as to be soil-proof, and a flexible clamping device, which locks detachably the draw-in member.