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Memórias do Instituto Oswaldo Cruz

Print version ISSN 0074-0276On-line version ISSN 1678-8060

Mem. Inst. Oswaldo Cruz vol.51  Rio de Janeiro Dec. 1953

https://doi.org/10.1590/S0074-02761953000100008 

Considerações sôbre a dosagem do nitrogênio pelo método de Kjeldahl

Pedro Fontana1 

Instituto Oswaldo Cruz, Laboratório de Bioquímica, Brasil


RESUMO

1. É feita uma revisão do método de KJELDAHL até 1950. 2. É dada a descrição de um método, trabalhando com amostras de material biológico contendo 0,14 a 0,70 mg de N. O desvio padrão encontrado foi de 0,0007 mg.

ABSTRACT

1. The determination of organic nitrogen by the KJELDAHL method is reviewed up to 1950. 2. A method is described in which samples of biological material containing from 0.14 to 0.70 mg. N were employed. The accuracy of the obtained results was evaluated and their standard deviation was found to be 0.0007 mg. Research is beeing carried out on kjeldahlization curves of different materials which is the object of a further paper.

 

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