Kwenziwa kanjani Ukunqunywa Kokuqukethwe Kwe-nitrogen nge-Kjeldahl Method?

Indlela ye-Kjeldahl isetshenziselwa ukunquma okuqukethwe kwe-nitrogen kumasampula ezinto eziphilayo kanye ne-inorganic. Sekuyiminyaka engaphezu kwe-100 indlela ye-Kjeldahl isetshenziswe ekunqumeni i-nitrogen ezinhlobonhlobo zamasampuli. Ukunqunywa kwe-Kjeldahl nitrogen kwenziwa ekudleni naseziphuzweni, enyameni, ekuphakeleni, okusanhlamvu kanye nefolishi ukuze kubalwe okuqukethwe kwamaprotheni. Futhi indlela ye-Kjeldahl isetshenziselwa ukunqunywa kwe-nitrogen emanzini angcolile, inhlabathi kanye namanye amasampula. Kuyindlela esemthethweni futhi ichazwa ngezindlela ezijwayelekile ezahlukahlukene njenge-AOAC, USEPA, ISO, DIN, Pharmacopeias kanye neziqondiso ezahlukahlukene zaseYurophu.

[DRK-K616 Automatic Kjeldahl Nitrogen Analyzer] iyisistimu yokulinganisa i-nitrogen ezenzakalelayo ngokuzenzakalelayo esekelwe endleleni yakudala yokunquma i-nitrogen ye-Kjeldahl. Ithuluzi lingabona ukukhishwa kwemfucuza okuzenzakalelayo kanye nomsebenzi wokuhlanza weshubhu lokugaya, futhi liqedele kalula ukukhipha udoti okuzenzakalelayo nomsebenzi wokuhlanza okuzenzakalelayo wenkomishi ye-titration. Isetshenziswa kakhulu ekudleni, ugwayi, ukuqapha indawo ezungezile, imithi, ucwaningo lwesayensi nokufundisa, ukugadwa kwekhwalithi kanye neminye imikhakha, ukunqunywa kokuqukethwe kwe-nitrogen noma amaprotheni.

Izici:

1. Ukuthulula okuzenzakalelayo kanye nomsebenzi wokuhlanza, ohlinzeka ngokusebenza okuphephile nokonga isikhathi. Idizayini yezicabha ezimbili yenza ukusebenza kuphephe futhi kuhlanzeke.

2. Ukugeleza kwesitimu kuyalawuleka, okwenza ukuhlola kube lula futhi kuhambisane nezimo. Imonitha yesikhathi sangempela yezinga lokushisa le-distillate izomisa ngokuzenzakalelayo ukusebenza kwethuluzi lapho izinga lokushisa le-distillate lingajwayelekile ukuze kuqinisekiswe ukunemba kwemiphumela yokuhlola.

3. Inemodi yokugcoba kabili ukuze ihlangabezane nezimfuneko ezihlukene zokuhlola, ukunciphisa izinga lobudlova lokusabela kwe-asidi-base, futhi ithulule ngokushesha ishubhu lokugaya ukuze kuvinjelwe ohlolayo ukuthi axhumane ne-reagent eshisayo ngemva kokukhishwa kwe-distillation futhi avikele ukuphepha komhloli. Iphampu yokudosa enembayo ephezulu kanye nesistimu ye-titration iqinisekisa ukunemba kwemiphumela yokuhlolwa.

4. Isibonisi sombala wokuthinta kwe-LCD, ukusebenza okulula futhi okulula, okucebile ngolwazi, okuvumela abasebenzisi ukuthi bakwazi ngokushesha ukusetshenziswa kwethuluzi.

5. Ithuluzi linezinzwa eziningi ezifana nomnyango wokuphepha endaweni, ishubhu lokugaya elikhona, i-condensate meteor, ijeneretha yesitimu, njll. Lonke ulwazi lungaphansi kolawulo ukuze kuqinisekiswe ukuphepha kokuhlolwa nomsebenzi.

6. I-nitrogen analyzer yangempela ezenzakalelayo, ukufakwa kwe-alkali okuzenzakalelayo ne-asidi okuzenzakalelayo, ukucwiliswa kwe-asidi okuzenzakalelayo, i-automatic titration, ukulahlwa kwemfucuza okuzenzakalelayo, ukuhlanza okuzenzakalelayo, ukulungisa okuzenzakalelayo, ukuchithwa kweshubhu lokugaya okuzenzakalelayo, ukutholwa kwephutha okuzenzakalelayo, ukuqapha okugcwele kwezinga lesixazululo okuzenzakalelayo, ukuqapha okuzenzakalelayo okungaphezu kwezinga lokushisa. , imiphumela yokubala okuzenzakalelayo.