Nzira dzakasiyana dzezvokurapa okisijeni sensors ndeidzi: electrochemical sensors, fluorescent oxygen sensors
1. Electrochemical oxygen sensor
Electrochemical oxygen sensing elements inonyanya kushandiswa kuyera oxygen iri mumhepo iri mumhepo.Aya ma sensors akabatanidzwa mumushini weRGM kuyera kusangana kweokisijeni.Vanosiya shanduko yemakemikari muchinhu chekunzwa, zvichikonzera kubuda kwemagetsi kuenzana nechiyero cheokisijeni.Electrochemical sensors inoshandura simba remakemikari kuita simba remagetsi kuburikidza neoxidation uye kuderedza maitiro.Inopa kubuda kwemagetsi kumudziyo wakaenzana nehuwandu hweokisijeni mu cathode uye anode.Iyo okisijeni sensor inoshanda seyazvino sosi, saka kuyerwa kwevoltage kunoitwa kuburikidza nemutoro wekudzivirira.Ikozvino kubuda kweiyo okisijeni sensor yakaenzana nechiyero chekushandiswa kweokisijeni neiyo okisijeni sensor.
Iyo inobuda ikozvino ye electrochemical sensor inowanzoyerwa mumamicroamp (a).Izvi zvazvino zvinoitika kana maerekitironi achipfuura nemuitiro yeoxidation paanode uye ayoni anopararira mumushonga we electrolyte kubva mukuderedza okisijeni pacathode.
2. Fluorescent oxygen sensor
Optical oxygen sensors yakavakirwa pamusimboti wefluorescence kudzimwa kweokisijeni.Ivo vanovimba nekushandiswa kwemwenje masosi, mwenje ma detectors uye luminescent zvinhu zvinosangana nechiedza.Luminescence-based oxygen sensors iri kutsiva electrochemical oxygen sensors muminda yakawanda.
Nheyo yemamolekyuli okisijeni fluorescence quenching yagara ichizivikanwa.Mamwe mamorekuru kana makomisheni efluoresce (kureva, anoburitsa simba rechiedza) kana akaiswa muchiedza.Nekudaro, kana mamorekuru eokisijeni aripo, simba rechiedza rinoendeswa kumamorekuru eokisijeni, zvichikonzera kushomeka kwefluorescence.Nekushandisa chitubu chechiedza chinozivikanwa, simba rechiedza rakaonekwa rinopindirana nenhamba yeokisijeni mamorekuru mumuenzaniso.Naizvozvo, iyo shoma fluorescence inoonekwa, iyo yakawanda okisijeni mamorekuru anofanirwa kunge aripo mumuenzaniso gasi.
Mune mamwe ma sensors, fluorescence inoonekwa kaviri mukati menguva inozivikanwa.Panzvimbo yekuyera yakazara fluorescence, kuderera kwefluorescence nekufamba kwenguva (kureva, fluorescence quenching) inoyerwa.Iyi nzira yekuora-yakavakirwa nguva inobvumira kuti zvive nyore sensor dhizaini.
Iyo pombi fluorescent oxygen sensor LOX-02-F inzwa inoshandisa fluorescence kudzimwa kweokisijeni kuyera ambient oxygen mazinga.Kunyangwe iine yakafanana columnar chimiro uye 4-yakatevedzana saizi seyakajairika electrochemical sensors, haitore okisijeni uye ine mukana wehupenyu hurefu (5 makore).Izvi zvinoita kuti zvive zvakakosha kumidziyo yakadai sekamuri yeokisijeni inopera kuchengetedza maaramu anotarisisa kudonha kamwe kamwe mumazinga eokisijeni mugasi rakamanikidzwa rakachengetwa mumhepo yemukati.
Nguva yekutumira: Kubvumbi-14-2022