Standard Methods for the Examination of Water and Wastewater Volume 4 download pdf
Standard Methods for the Examination of Water and Wastewater Volume 4 download pdf
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Author: American Public Health Association
Number of Pages: 42 pages
Published Date: 12 Sep 2013
Publisher: Theclassics.Us
Publication Country: United States
Language: English
ISBN: 9781230398730
File Name: Standard.Methods.for.the.Examination.of.Water.and.Wastewater.Volume.4.pdf
Download Link: Standard Methods for the Examination of Water and Wastewater Volume 4
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 edition. Excerpt: ... equal to the content of sulfate (S04). SODIUM, POTASSIUM, AND LITHIUM. Evaporate to dryness the filtrate from the precipitation of barium sulfate. Add a few cubic centimeters of hot water and then a saturated solution of barium hydroxide until a slight film collects on the top of the solution. Filter and wash the precipitate with hot water. Add to the filtrate an excess of ammonium hydroxide and ammonium carbonate solution. Filter, evaporate the filtrate to dryness, dry, and ignite at low red heat to expel ammonium salts. Repeat the operations including the addition of barium hydroxide until no precipitate is obtained by barium hydroxide or by ammonium hydroxide and ammonium carbonate. Evaporate the final filtrate to dryness in a weighed platinum dish, dry, cool, Potassium 59 and weigh the residue. Dissolve the residue in a few cubic centimeters of water, filter, wash the filter paper twice with hot water, then ignite the filter paper in the platinum dish. Cool and weigh the residue. Subtract this weight from the first weight including the residue. The difference is the weight of the chlorides of sodium and potassium and lithium. If it is not desired to separate sodium and potassium the weight of sodium and potassium as sodium may be calculated from this difference by multiplying it by 0.394. POTASSIUM. First procedure.--Add to the solution of the chlorides of sodium and potassium a few drops of dilute hydrochloric acid (1 to 3) and 1 cc. of 10 per cent platinic chloride (PtCU) for each 30 mg. of the combined chlorides. Evaporate to a thick syrup on the water bath, then remove dish and allow it to come to dryness at laboratory temperature. Treat the residue cold with 80 per cent alcohol and filter. Wash the precipitate with 80 per cent...
Read online Standard Methods for the Examination of Water and Wastewater Volume 4 Buy and read online Standard Methods for the Examination of Water and Wastewater Volume 4 Download Standard Methods for the Examination of Water and Wastewater Volume 4 ebook, pdf, djvu, epub, mobi, fb2, zip, rar, torrent Download to iPad/iPhone/iOS, B&N nook Standard Methods for the Examination of Water and Wastewater Volume 4 ebook, pdf, djvu, epub, mobi, fb2, zip, rar, torrent
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Standard Methods for the Examination of Water and Wastewater Volume 4. American Public Health Association
Author: American Public Health Association
Number of Pages: 42 pages
Published Date: 12 Sep 2013
Publisher: Theclassics.Us
Publication Country: United States
Language: English
ISBN: 9781230398730
File Name: Standard.Methods.for.the.Examination.of.Water.and.Wastewater.Volume.4.pdf
Download Link: Standard Methods for the Examination of Water and Wastewater Volume 4
---------------------------------------------------------------
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1920 edition. Excerpt: ... equal to the content of sulfate (S04). SODIUM, POTASSIUM, AND LITHIUM. Evaporate to dryness the filtrate from the precipitation of barium sulfate. Add a few cubic centimeters of hot water and then a saturated solution of barium hydroxide until a slight film collects on the top of the solution. Filter and wash the precipitate with hot water. Add to the filtrate an excess of ammonium hydroxide and ammonium carbonate solution. Filter, evaporate the filtrate to dryness, dry, and ignite at low red heat to expel ammonium salts. Repeat the operations including the addition of barium hydroxide until no precipitate is obtained by barium hydroxide or by ammonium hydroxide and ammonium carbonate. Evaporate the final filtrate to dryness in a weighed platinum dish, dry, cool, Potassium 59 and weigh the residue. Dissolve the residue in a few cubic centimeters of water, filter, wash the filter paper twice with hot water, then ignite the filter paper in the platinum dish. Cool and weigh the residue. Subtract this weight from the first weight including the residue. The difference is the weight of the chlorides of sodium and potassium and lithium. If it is not desired to separate sodium and potassium the weight of sodium and potassium as sodium may be calculated from this difference by multiplying it by 0.394. POTASSIUM. First procedure.--Add to the solution of the chlorides of sodium and potassium a few drops of dilute hydrochloric acid (1 to 3) and 1 cc. of 10 per cent platinic chloride (PtCU) for each 30 mg. of the combined chlorides. Evaporate to a thick syrup on the water bath, then remove dish and allow it to come to dryness at laboratory temperature. Treat the residue cold with 80 per cent alcohol and filter. Wash the precipitate with 80 per cent...
Read online Standard Methods for the Examination of Water and Wastewater Volume 4 Buy and read online Standard Methods for the Examination of Water and Wastewater Volume 4 Download Standard Methods for the Examination of Water and Wastewater Volume 4 ebook, pdf, djvu, epub, mobi, fb2, zip, rar, torrent Download to iPad/iPhone/iOS, B&N nook Standard Methods for the Examination of Water and Wastewater Volume 4 ebook, pdf, djvu, epub, mobi, fb2, zip, rar, torrent
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