Tsis siv neeg Kjeldahl nitrogen txiav txim ntsuas ntsuas kev ua haujlwm:
Cov kev ua haujlwm ua haujlwm tau ua hauv cov qauv ntsuas ntsuas yog raws li hauv qab no: dilution, reagent ntxiv, distillation, titration, effluent paug, xam, luam ntawv.
Dilution: dilute tus qauv digested nyob rau hauv lub digestive raj nrog dej distilled.
Ntxiv cov reagents: suav nrog lye, boric acid absorption tov, titrating acid.
Distillation: Dhau cov qauv hauv lub raj xa dej mus rau hauv qhov cub kub kom nqus cov pa ammonia hauv cov qauv.
Titration: Titration ntawm cov tshuaj absorbed thaum lub sij hawm los yog tom qab distillation.
Cov kua dej ntws tawm: tshem cov kua khib nyiab los ntawm lub plab zom mov thiab lub khob tau txais.
Xam thiab luam tawm: xam thiab luam tawm cov txiaj ntsig raws li kev ua haujlwm.
Cov txheej txheem kuaj ua qauv:
(1) Nruab qhov ntsuas thiab txuas cov kav dej.
(2) Qhib lub condensate, tso lub raj khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob
(3) Muab lub raj digestive uas muaj cov kua hauv plab thiab teeb tsa cov kev coj ua thiab kev ua haujlwm ua ntej pib qhov kev xeem. Lub sijhawm nrhiav kom pom muaj nuj nqi tiag tiag yog qhib rau tib lub sijhawm. Ntxiv boric acid absorption tov, dilute dej thiab lye rau hauv tsis siv neeg Kjeldahl apparatus; Cov ammonia tsim los ntawm chav distillation yog absorbed los ntawm condensation nrog boric acid thiab ces titrated nrog tus qauv acid.
(4) Kev sim ua tiav thiab cov txiaj ntsig tau tshwm sim. Nws tuaj yeem luam tawm, tshem tawm cov khib nyiab thiab ntxuav tau. Thawj qhov parameter input screen yog tso tawm.
Post lub sij hawm: Feb-28-2022
