A Manual of the detection of poisons by medico-chemical analysisH. Baillière, 1857 - 170 pages |
From inside the book
Page 20
... porcelain dish , and , after having been sufficiently concentrated , united with the first filtrate . The whole of the liquid should amount to about a pint . + The chemist will readily understand the object of this operation 20 THE ...
... porcelain dish , and , after having been sufficiently concentrated , united with the first filtrate . The whole of the liquid should amount to about a pint . + The chemist will readily understand the object of this operation 20 THE ...
Page 24
... porcelain dish , and a little water poured on it ; the precipitate is then divided into a thin , homogeneous paste , by means of a feather , and ammonia added , drop by drop , as long as solution takes place , or until an excess of the ...
... porcelain dish , and a little water poured on it ; the precipitate is then divided into a thin , homogeneous paste , by means of a feather , and ammonia added , drop by drop , as long as solution takes place , or until an excess of the ...
Page 25
... porcelain capsule , and evaporated to dryness at a gentle heat ; the sulphide of arsenic , if present in the precipitate , remains , mixed with the organic matter , as a dark - brown resi- due . § 12. The only conclusive proof of the ...
... porcelain capsule , and evaporated to dryness at a gentle heat ; the sulphide of arsenic , if present in the precipitate , remains , mixed with the organic matter , as a dark - brown resi- due . § 12. The only conclusive proof of the ...
Page 26
... porcelain capsule , and the acid evaporated at a gentle heat . If the residue which is now left is still of a dark color , this treat- ment with nitric acid has to be repeated , until the residue , while moist , appears of a yellow ...
... porcelain capsule , and the acid evaporated at a gentle heat . If the residue which is now left is still of a dark color , this treat- ment with nitric acid has to be repeated , until the residue , while moist , appears of a yellow ...
Page 27
... porcelain dish , yields the pure sulphide . §14 . Fresenius recommends to effect the destruction of the organic matter of the residue in question - the residue from the evaporation of the ammoniacal solu- tion of the crude sulphide of ...
... porcelain dish , yields the pure sulphide . §14 . Fresenius recommends to effect the destruction of the organic matter of the residue in question - the residue from the evaporation of the ammoniacal solu- tion of the crude sulphide of ...
Common terms and phrases
acetate acidulated added alcohol alkaline alkaloid ammonia analysis antimony apparatus application arseneted hydrogen arsenious acid becomes boiling brucine carbonate of potassa carbonate of soda caustic potassa caustic soda Chemical Chemistry Chimie Chimique chlorate of potassa chloric acid chloride color colorless concentrated conicine containing copper crystals cyanide cyanide of potassium deposited detection dilute dissolved distillate drop edition ethereal solution evaporation excess filter filtrate flame formed gentle heat glass hydrochloric acid hydrocyanic acid hydrogen gas insoluble liquid London mass mercury metallic method mirror mixed mixture morphine nicotine nitrate of silver nitric acid obtained odor organic matter oxalic acid oxide Paris particles phosphorus Physique placed planches poison porcelain porcelain dish portion potassium poured presence produced pure reagents reduction reduction-tube residue retort salts spots strychnine substances under examination sulphate sulphide of antimony sulphide of arsenic sulphocyanide sulphureted hydrogen sulphuric acid tion Traite treated Treatise tube veratrine volatile vols white precipitate zinc
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