| Kjeldahl apparatus | <apparatus, chemistry> An apparatus for distilling ammonia arising from acid decomposition of an organic compound; used in nitrogen analysis. (05 Mar 2000) |
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| Kjeldahl method | More specifically see: macro-Kjeldahl method, micro-Kjeldahl method. (05 Mar 2000) |
| Kjeldahl, Johan | <person> Danish chemist, 1849-1900. See: Kjeldahl apparatus, Kjeldahl method, macro-Kjeldahl method, micro-Kjeldahl method. (05 Mar 2000) |
| macro-Kjeldahl method | A procedure for analyzing the content of nitrogenous compounds in urine, serum, or other specimens, usually to determine relatively large amounts of nitrogen (e.g., 20 to 100 mg); the specimen is treated with a digestion mixture (copper sulfate and sulfuric acid), heated thoroughly, and made alkaline with a solution of sodium hydroxide; ammonia is then distilled from the mixture, trapped in a boric acid-indicator solution, and titrated with standard hydrochloric or sulfuric acid. (05 Mar 2000) |
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| micro-Kjeldahl method | A modification of the macro-Kjeldahl method designed for the analysis of nitrogenous compounds in relatively small quantities, e.g., specimens in which the total content of nitrogen is in the range of 1 to a few mg. (05 Mar 2000) |
| Kjeldahl's m. |
(1883), a method of determining the amount of nitrogen in an organic compound. It consists in heating the material to be analyzed with strong sulfuric acid. The nitrogen is thereby converted to ammonia, which is distilled off and caught in tenth normal solution of sulfuric acid. By titration the amount of ammonia is determined, and from this the amount of nitrogen is estimated.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Kjeldahl's method (test) |
see under method.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Kjeldahl's t. |
(for nitrogen), see under method.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
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제품명 |
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보험코드 | 성분/함량 | 구분/보험급여 |
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