A Science of Impurity: Water Analysis in Nineteenth Century by Christopher Hamlin

By Christopher Hamlin

A technological know-how of Impurity is the 1st specified historical past of the mobilization of chemistry (and later bacteriology) to fulfill the general public call for for stable water. It additionally deals a standpoint on figuring out how sleek actual sciences are tapped to make sure public strong.
A technological know-how of Impurity explores the social framework during which chemists got here to paintings on difficulties of water caliber, the ideas they used to review the surroundings, their conclusions and their function in facing a anxious public.
For historians of technology, researchers and planners within the water undefined.

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2 The thrust of Murray's argument was that the finding of a particular combination of salts, here sodium chloride and calcium sulphate, in the residue of a sample which had been evaporated, was no proof that those salts existed in the water. It was equally possible to believe that recombination had taken place during evaporation, and that the original water had contained calcium chloride and sodium sulphate. In Murray's view there was no way to determine which was the case. and bases existed as binary compoundsthe question was which ones.

54 John Murray, 'An Analysis of the Mineral Waters of Dunblane and Pitcaithly,' pp 347-63. 55 Ibid, pp 347-8. 56 John Murray, Elements of Chemistry, 2 vols (Edinburgh: Creech, 1810) I, pp 42-50. 57 Murray, 'An Analysis of the Mineral Waters of Dunblane and Pitcaithly,' p 350. 58 Ibid, p 348. 59 William Henry, The Elements of Experimental Chemistry, 4th American from the 7th London ed. v. chemistry, p 710; Richard Kirwan, Essay on Mineral Waters, pp 136-40, 164. For a more modern < previous page page_44 next page > < previous page page_45 next page > Page 45 treatment see Jones, Solution, pp 22-9, 142-3; Coley, 'Physicians and the Chemical Analysis of Mineral Waters,' pp 142-4.

For the lasting presence of this problem and similar experiments see A B Northcote, 'On the Water of the River Severn at Worcester,' Phil. Mag. 4th series 34 (1867): 262. 61 Murray, 'An Analysis of the Mineral Waters of Dunblane and Pitcaithly,' p 349. 62 Ibid, p 354. 63 John Murray, 'A General Formula for the Analysis of Mineral Waters,' 93-98, 169-77. See also his 'Analysis of Sea Water, with Observations on the Analysis of Salt Brines,' Phil. Mag. 1st series 51 (1818): 10-25, 91-103. 64 Murray, 'General Formula,' p 95.

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