Izindlela Ezihlukene Zezinzwa Ze-Oxygen Yezokwelapha

Izindlela ezihlukene zezinzwa ze-oxygen yezokwelapha yilezi: izinzwa ze-electrochemical, izinzwa ze-oxygen ze-fluorescent

1. Electrochemical oxygen sensor

Izakhi zokuzwa komoya-mpilo we-Electrochemical zisetshenziswa kakhulu ukukala okuqukethwe komoyampilo emoyeni osemoyeni.Lezi zinzwa zihlanganiswe emshinini we-RGM ukukala ukugxila kokunikezwa komoya-mpilo.Zishiya izinguquko zamakhemikhali kusici sokuzwa, okuholela ekuphumeni kukagesi ngokulingana nezinga le-oxygen.Izinzwa ze-Electrochemical ziguqula amandla amakhemikhali abe amandla kagesi ngokusebenzisa i-oxidation nezinqubo zokunciphisa.Ihlinzeka ngokukhipha ugesi kudivayisi ngokulingana nephesenti le-oxygen ku-cathode ne-anode.Inzwa ye-oxygen isebenza njengomthombo wamanje, ngakho-ke ukulinganiswa kwe-voltage kwenziwa nge-resistor yomthwalo.Umphumela wamanje wenzwa yomoya-mpilo ulingana nezinga lokusetshenziswa komoya-mpilo yinzwa ye-oxygen.

Umphumela wamanje wenzwa ye-electrochemical ngokuvamile ulinganiswa ngama-microamp (a).Lokhu kwamanje kwenzeka lapho ama-electron edlula inqubo ye-oxidation ku-anode futhi ama-ion ahlakazeka esixazululweni se-electrolyte esuka enqubweni yokunciphisa umoya-mpilo ku-cathode.

2. Inzwa ye-oxygen ye-Fluorescent

Izinzwa ze-Optical oxygen zisekelwe kumgomo we-fluorescence quenching of oxygen.Bathembele ekusetshenzisweni kwemithombo yokukhanya, izitholi zokukhanya nezinto ezikhanyayo ezisabela ekukhanyeni.Izinzwa zomoya-mpilo ezisekelwe ku-luminescence zithatha indawo yezinzwa zomoya-mpilo we-electrochemical emikhakheni eminingi.

Umgomo wokucisha i-oxygen fluorescence yamangqamuzana kade yaziwa.Amanye ama-molecule noma ama-compounds fluoresce (okungukuthi, akhipha amandla okukhanya) lapho evezwe ekukhanyeni.Kodwa-ke, uma ama-molecule e-oksijini ekhona, amandla okukhanya adluliselwa kuma-molecule e-oksijini, okuholela ekunciphiseni kwe-fluorescence.Ngokusebenzisa umthombo wokukhanya owaziwayo, amandla okukhanya atholiwe alingana ngokuphambene nenani lama-molecule komoyampilo kusampula.Ngakho-ke, lapho kutholwa i-fluorescence encane, kufanele kube khona ama-molecule e-oksijini engeziwe kusampula yegesi.

Kwezinye izinzwa, i-fluorescence itholwa kabili phakathi nesikhathi esaziwayo.Esikhundleni sokulinganisa isamba se-fluorescence, ukwehla kwe-fluorescence ngokuhamba kwesikhathi (okungukuthi, ukucisha i-fluorescence) kuyalinganiswa.Le ndlela yesikhathi esekwe ekuboleni ivumela imiklamo yezinzwa elula.

Inzwa ye-oxygen ye-fluorescent engu-LOX-02-F iyinzwa esebenzisa ukucishwa kwe-oxygen nge-fluorescence ukuze ilinganise amazinga komoyampilo akhona.Nakuba inesakhiwo esifanayo sekholomu kanye nosayizi we-4-series njengezinzwa ezijwayelekile ze-electrochemical, ayimumbi umoya-mpilo futhi inenzuzo yokuphila isikhathi eside (iminyaka engu-5).Lokhu kwenza kube usizo kumadivayisi afana nama-alamu okuphepha okuphelelwa umoya komoya-mpilo egumbini aqapha ukwehla okungazelelwe kumazinga komoyampilo kugesi elicinene eligcinwe emoyeni wasendlini.