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Fertilizers - Determination of total nitrogen content - Titrimetric method after distillation by ISO/TC 134 Fertilizers, soil conditioners and beneficial substances is a reference work available to read on EtoBox.
What is Fertilizers - Determination of total nitrogen content - Titrimetric method after distillation about?
The method consists in reducing of nitrate to ammonia by chromium powder in acid medium, converting of organic and urea nitrogen into ammonium sulfate by digestion with concentrated sulfuric acid in the presence of a catalyst, distilling of the ammonia from an alkaline solution and absorbing in an excess of standard volumetric sodium hydroxide solution. The method is not recommended for materials containing more than 7 % of organic matter.
Who reads Fertilizers - Determination of total nitrogen content - Titrimetric method after distillation?
It is typically read by working professionals who need an authoritative practice reference.
Common subject areas: medicine, law, business, engineering.
- Author
- ISO/TC 134 Fertilizers, soil conditioners and beneficial substances
- Publisher
- ISO
- Published
- 1984
- Language
- EN
- Category
- reference
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