A Manual of the Detection of Poisons by Medico-chemical Analysis |
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Page 20
cut into shreds , if necessary ) , introduced into a porcelain dish , and about as
much pure concentrated hydrochloric acid added as is equal to the weight of the
dry substance contained in the mass , or a little more , and enough water to form
...
cut into shreds , if necessary ) , introduced into a porcelain dish , and about as
much pure concentrated hydrochloric acid added as is equal to the weight of the
dry substance contained in the mass , or a little more , and enough water to form
...
Page 24
For this purpose , the filter containing the moist precipitate is spread out in a
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 ...
For this purpose , the filter containing the moist precipitate is spread out in a
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 ...
Page 25
The ammoniacal solution , together with the washings , is then placed in a
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 ...
The ammoniacal solution , together with the washings , is then placed in a
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 ...
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
The solution , on evaporation in a 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
solution of ...
The solution , on evaporation in a 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
solution of ...
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A Manual of the Detection of Poisons by Medico-Chemical Analysis (Classic ... Friedrich Julius Otto No preview available - 2015 |
Common terms and phrases
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
Popular passages
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 |
| Export Citation | BiBTeX EndNote RefMan |