Ana amfani da hanyar Kjeldahl don tantance abun ciki na nitrogen a cikin samfuran kwayoyin halitta da na inorganic. Fiye da shekaru 100 ana amfani da hanyar Kjeldahl don ƙayyade nitrogen a cikin samfurori masu yawa. Ƙaddamar da Kjeldahl nitrogen an yi shi ne a cikin abinci da abin sha, nama, ciyarwa ...
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