Читать книгу Poisons, Their Effects and Detection - Alexander Wynter Blyth - Страница 45

§ 32. A general method of procedure has been published by W. Autenrieth.[43]

[43] Kurze Anleitung zur Auffindung der Gifte, Freiburg, 1892.

He divides poisonous substances, for the purposes of separation and detection, into three classes:—

1 Poisons capable of distillation from an acid aqueous solution.

2 Organic substances which are not capable of distillation from acid solutions.

3 Metallic poisons.

Where possible, the fluid or solids submitted to the research are divided into four equal parts, one of the parts to be kept in reserve in case of accident or as a control; one of the remaining three parts to be distilled; a second to be investigated for organic substances; and a third for metals. After the extraction of organic substances from part No. II. the residue may be added to No. III. for the purpose of search after metals; and, if the total quantity is small, the whole of the process may be conducted without division.