The organic analysis of potable waters / by J. A. Blair.

  • Blair, J. A. (James Andrew)
Date:
1891
Catalogue details

Licence: Public Domain Mark

Credit: The organic analysis of potable waters / by J. A. Blair. Source: Wellcome Collection.

    113/136 (page 101)
    Table XXVT. Table giving the Results obtained when the Organic Carbon of Standard Solutions was estimated by the Sulphuric Acid and Permanganate Process. All the solutions were made of the same strength, so that 1 c.c. of the solution contained 1 milligrm. of the pure organic substance. Tartaric Acid.—Recrystallised and carefully dried. Gallic Acid.—On drying it was found to contain 9’5 per cent, of water of hydration. Salicine.—The pure substance used. Sulphate of Quinine was carefully dried before use. Substance. Tartaric acid, 2 milligrms. used » » 2 Gallic Salicine Quin, sulph. 3 2 2 2 2 2 2 li 1 li li li li Theoretical carbon. 0'640 0-640 0-960 0-894 0-894 0- 894 1- 091 1-091 1-091 0-818 0-643 0-964 0-964 0-964 0-964 Carbon obtained. 0-6781 Average for 2 milli 0’624 V grammes, 0-954 J 0-646. 0-8641 0-924 L 0-884. 0-864 J 1092 ] 0996 Averagefor2milli- 1-104 0-876 |0'642 0-804 [0-912 0-972 0-924 ; grammes, 1-090. Average for 1J * milligrammes, 0-915.