ICAR Research Data Repository for Knowledge Management
Error caused by carbon dioxide in determination of ammonium by direct steam distillation of tropical wetland rice soils
OAR@ICRISAT
View Archive Info| Field | Value | |
| Relation |
http://oar.icrisat.org/4002/
http://dx.doi.org/10.1007/BF02374523 |
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| Title |
Error caused by carbon dioxide in determination of ammonium by direct steam distillation of tropical wetland rice soils
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| Creator |
Sahrawat, K L
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| Subject |
Soil Science
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| Description |
Abstract A study was made with eight Philippine wetland rice soils to quantify the possible error caused by the CO2 evolved during direct distillation of soil suspensions in aerobic and anaerobic conditions with MgO. The error caused by CO2 was eliminated by absorbing the ammonia distilled in H2SO4, which was gently boiled to derive off the CO2 absorbed. The possible error caused by CO2 was not eliminated when boric acid was used for absorbing ammonia. The difference in NH4 + values determined by using sulfuric acid and boric acid methods gave an estimate of the error caused by CO2. It was found that CO2 evolved caused negative error in the NH4 + values obtained using the direct distillation of soil suspensions with MgO in presence of KCl. The magnitude of error was higher and significant with anaerobic soil samples but this error was negligible with aerobic soils. |
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| Publisher |
Kluwer
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| Date |
1982
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Language |
en
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| Rights |
—
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| Identifier |
http://oar.icrisat.org/4002/1/Plant_and_Soil_69_283-285_1982.pdf
Sahrawat, K L (1982) Error caused by carbon dioxide in determination of ammonium by direct steam distillation of tropical wetland rice soils. Plant and Soil, 69 (2). pp. 283-285. ISSN 0032-079X |
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