A Manual of the Detection of Poisons by Medico-chemical Analysis |
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Page 17
A fragment is heated in a test - tube with some nitric acid , to form arsenic acid ; a
few drops of nitrate of silver , and , afterwards , dilute ammonia , drop by drop ,
are added , when the reddish brown precipitate of arsenate of silver should be ...
A fragment is heated in a test - tube with some nitric acid , to form arsenic acid ; a
few drops of nitrate of silver , and , afterwards , dilute ammonia , drop by drop ,
are added , when the reddish brown precipitate of arsenate of silver should be ...
Page 18
vapor , a solution of arsenic acid ( or of arsenions acid if the heat was not kept up
for a sufficiently long time , or not sufficient nitric acid added ) ; the liquid is
carefully neutralized with ammonia , and then a few drops of nitrate of silver
added , a ...
vapor , a solution of arsenic acid ( or of arsenions acid if the heat was not kept up
for a sufficiently long time , or not sufficient nitric acid added ) ; the liquid is
carefully neutralized with ammonia , and then a few drops of nitrate of silver
added , a ...
Page 25
To effect this reduction , the sulphide or the acids of arsenic , prepared from the
sulphide by oxidation , may be employed . But , even if the ... fusion with nitrate of
soda . Some highly concentrated or , better still , fuming nitric acid is ARSENIC .
To effect this reduction , the sulphide or the acids of arsenic , prepared from the
sulphide by oxidation , may be employed . But , even if the ... fusion with nitrate of
soda . Some highly concentrated or , better still , fuming nitric acid is ARSENIC .
Page 26
concentrated or , better still , fuming nitric acid is poured on the residue , in the
porcelain capsule , and the acid evaporated at a gentle heat . If the residue which
is now left is still of a dark color , this treatment with nitric acid has to be repeated
...
concentrated or , better still , fuming nitric acid is poured on the residue , in the
porcelain capsule , and the acid evaporated at a gentle heat . If the residue which
is now left is still of a dark color , this treatment with nitric acid has to be repeated
...
Page 27
of the nitric and nitrous acids ; the only safe indication for this is the appearance
of the thick sulphuric acid vapors , and the evaporation must be continued until
this takes place . - ( Meyer , Annalen der Chemie und Pharmacie , Bd . 66 . p .
237 . ) ...
of the nitric and nitrous acids ; the only safe indication for this is the appearance
of the thick sulphuric acid vapors , and the evaporation must be continued until
this takes place . - ( Meyer , Annalen der Chemie und Pharmacie , Bd . 66 . p .
237 . ) ...
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A Manual of the Detection of Poisons by Medico-Chemical Analysis (Classic ... Friedrich Julius Otto No preview available - 2015 |
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added addition alcohol alkaloid ammonia analyst antimony apparatus appear applied arsenious acid becomes boiling carbonate carbonate of soda cause caustic characteristic Chemical Chemistry Chimie chloride cloth collected color completely concentrated consists containing contents copper cyanide deposited described detection dilute dish dissolved distillate drop easily edition effect escaping ether evaporation examination excess experiments filter filtrate flame formed glass heated hydrochloric acid iron lead liquid London manner Marsh mass matter means metallic method mirror mixed mixture necessary nitrate of silver nitric acid observed obtained odor operation organic matter oxide Paris passed placed poison porcelain portion potassa potassium poured precipitate prepared presence produced pure quantity reaction reduction remains removed residue resulting retort salts separated soda soluble solution substances sufficient sulphide of arsenic sulphureted hydrogen sulphuric acid takes tion trace treated treatment tube volatile vols washed whole yellow zinc
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Page 179 - ANNALES DE CHIMIE, ou Recueil de memoires concernant la chimie et les arts qui en dependent [/rant vol.
Bibliographic information
| Title | A Manual of the Detection of Poisons by Medico-chemical Analysis |
| Author | Friedrich Julius Otto |
| Translated by | William Elderhorst |
| Publisher | H. Baillière, 1857 |
| Length | 170 pages |
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