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A Rapid Gas Evolution Method for Calcium Carbonate Equivalent in Liming Materials
Author(s) -
Horton J. H.,
Newsom D. W.
Publication year - 1953
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1953.03615995001700040029x
Subject(s) - citation , calcium carbonate , information retrieval , computer science , history , chemistry , library science , organic chemistry
W the increased use of various low grade liming materials for reducing soil acidity, a rapid method for determining the calcium carbonate equivalent of these materials is needed. Edson (1) has presented a rapid titration method. This method requires a 30minute digestion period and the results are only within a 10% interval. Pierce and Haenisch (2) describe a carbon dioxide evolution method which employs a carbon dioxide absorption material such as potassium hydroxide. This method is time-consuming since carbon dioxide must be evolved slowly for complete absorption. 'The method proposed is a modification of the gas evolution method described by Pierce and Haenisch (2). The apparatus employed is shown in figure 1. A /^= ^/^ ^