Biochemical notes : laboratory work. First and second parts.

  • Gies, William John, 1872-1956.
Date:
1906
Catalogue details

Licence: Public Domain Mark

Credit: Biochemical notes : laboratory work. First and second parts. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    31. Summary of cation processes, 9-30. In the subjoined summary the methods heretofore described for the detection of cations are indicated in a manner intended to favor easy review. I. Original Solution + HCl, etc. (11). Filter (?) : Pbecipitate (?) Filtrate 4-H2^) etc. (13). Filter (?) : See II. 1 II. Original Solution. Filter : Precipitate (?) Filtrate See 13. Eeject. Process 15 (precipitation of phosphates and oxalates). I Precipitate (15) A. Preliminary tests: ((.. Phosphate, test 16. h. Oxalate, test 17. B. Solution of precipitate (19-20) Test for iron, (?) 21 Filtrate (i5) + (NHi)2S, etc. (24) Filter : Precipi- - ,. K . I TATE (?) b. Removal of iron and phos«]j Manga- F1LTRATE+ (NHJjCOj, etc. (26) Filter: phate, 22. Filter: Precipitate Filtrate (22) s- Keject. Combine with filtrate 15. nese(?) Test 24. Precipitate Filtrate+ Na2HP04, Calcium. etc. (28). Filter: Test 26. I Precipitate Magnesium. Test 28. Filtrate Eeject. III. Original Solution. A. Flame tests, 29 : Sodium, potassium. B. Ammonia, 30 : Ammonium. G O <J bo s s o U Methods for the detection of cations of metals of groups V and VI in the absence of cations of metals of groups I-IV. 32. Since calcium, magnesium, sodium, potassium and ammonium are the leading inorganic cations contained in biological liquids, and since the cations of the metals of groups I-IV are usually absent, the following plan of analysis leads to a more speedy detection of the cations of greatest biological importance. 33. Test for sodium, ijoiassium and ammonium as was previously indicated (29-30).