Standard Methods for the Examination of Water and Wastewater Volume 4 - Softcover
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...
"synopsis" may belong to another edition of this title.
About the Author:
American Water Works Association (AWWA) is the leading organization of water management professionals in the United States.
James K. Edzwald, Ph.D., is Professor Emeritus at the University of Massachusetts where he was Professor of Civil and Environmental Engineering from 1984 2006. He is a former President of the Association of Environmental Engineering Professors and served on the Board of Trustees as Vice President. Dr. Edzwald was twice honored with teaching awards at the University of Massachusetts and in 1990 he received the College of Engineering Alumni Association Outstanding Faculty Award. Dr. Edzwald is a member of AAEE, ASCE, AWWA, AEESP, IWA, and the NEWWA.
"About this title" may belong to another edition of this title.
- PublisherTheClassics.us
- Publication date2013
- ISBN 10 1230398732
- ISBN 13 9781230398730
- BindingPaperback
- Number of pages42
(No Available Copies)
Search Books: Create a WantIf you know the book but cannot find it on AbeBooks, we can automatically search for it on your behalf as new inventory is added. If it is added to AbeBooks by one of our member booksellers, we will notify you!
Create a Want