Narkar da iskar oxygen tana nufin adadin iskar oxygen da aka narkar a cikin ruwa, yawanci ana rubuta shi azaman DO, wanda aka bayyana a cikin milligrams na oxygen kowace lita na ruwa (a cikin mg/L ko ppm).Wasu mahadi na kwayoyin halitta suna lalata su a ƙarƙashin aikin ƙwayoyin cuta na aerobic, waɗanda ke cinye narkar da iskar oxygen a cikin ruwa, kuma narkar da iskar oxygen ba za a iya sake cika su cikin lokaci ba.Kwayoyin anaerobic a cikin ruwa za su ninka da sauri, kuma kwayoyin halitta za su mayar da jikin ruwa baki saboda lalata.wari.Adadin narkar da iskar oxygen a cikin ruwa alama ce don auna ikon tsarkake kai na jikin ruwa.An narkar da iskar oxygen da ke cikin ruwa, kuma yana ɗaukar ɗan lokaci kaɗan don dawo da yanayin farko, yana nuna cewa jikin ruwa yana da ƙarfin tsarkakewa mai ƙarfi, ko kuma gurɓataccen ruwa ba shi da mahimmanci.In ba haka ba, yana nufin cewa jikin ruwa ya ƙazantar da gaske, ikon tsarkake kansa yana da rauni, ko ma ikon tsarkakewa ya ɓace.Yana da alaƙa da kusanci da ɓangaren ɓangaren iskar oxygen a cikin iska, matsa lamba na yanayi, zafin ruwa da ingancin ruwa.
1.Aquaculture: don tabbatar da buƙatun numfashi na samfuran ruwa, saka idanu na ainihin lokacin abun ciki na oxygen, ƙararrawa ta atomatik, iskar oxygenation ta atomatik da sauran ayyuka.
2.Water ingancin kula da na halitta ruwa: Gano gurbatawa digiri da kai tsarkakewa ikon ruwa, da kuma hana nazarin halittu gurbatawa kamar eutrophication na ruwa.
3. Maganin najasa, alamun kulawa: tankin anaerobic, tanki na aerobic, tanki na iska da sauran alamomi ana amfani dasu don sarrafa tasirin maganin ruwa.
4. Sarrafa lalata kayan ƙarfe a cikin bututun samar da ruwa na masana'antu: Gabaɗaya, ana amfani da na'urori masu auna firikwensin tare da kewayon ppb (ug / L) don sarrafa bututun don cimma iskar oxygen sifili don hana tsatsa.Ana amfani da shi sau da yawa a cikin wutar lantarki da kayan aikin tukunyar jirgi.
A halin yanzu, mafi yawan narkar da mita oxygen akan kasuwa yana da ka'idodin aunawa guda biyu: Hanyar membrane da hanyar kyalli.To mene ne bambanci tsakanin su biyun?
1. Hanyar membrane (wanda kuma aka sani da hanyar polarography, hanyar matsa lamba akai-akai)
Hanyar membrane tana amfani da ka'idodin electrochemical.Ana amfani da membrane mai yuwuwa don raba platinum cathode, anode na azurfa, da electrolyte daga waje.A al'ada, cathode yana kusan hulɗar kai tsaye tare da wannan fim.Oxygen yana yaduwa ta cikin membrane a daidai lokacin da yake daidai da matsa lamba.Mafi girman matsin lamba na ɓangaren oxygen, yawancin oxygen zai wuce ta cikin membrane.Lokacin da narkar da oxygen ya ci gaba da shiga cikin membrane kuma ya shiga cikin rami, an rage shi a kan cathode don samar da halin yanzu.Wannan halin yanzu yana daidai da narkar da iskar oxygen.Bangaren mita yana jujjuya sarrafawa don canza ma'aunin halin yanzu zuwa naúrar tattarawa.
2. Fluorescence
Binciken mai kyalli yana da ginanniyar tushen haske wanda ke fitar da haske shuɗi kuma yana haskaka shimfidar haske.Abun mai kyalli yana fitar da jajayen haske bayan an yi farin ciki.Tun da kwayoyin oxygen na iya ɗaukar makamashi (sakamako mai kashewa), lokaci da ƙarfin haske mai ban sha'awa yana da alaƙa da kwayoyin oxygen.Tattaunawar tana da sabanin daidaito.Ta hanyar auna bambance-bambancen lokaci tsakanin hasken ja mai farin ciki da hasken tunani, da kwatanta shi tare da ƙimar ƙima na ciki, ana iya ƙididdige yawan ƙwayoyin iskar oxygen.Ba a cinye iskar oxygen yayin aunawa, bayanan sun tsaya tsayin daka, aikin yana da aminci, kuma babu tsangwama.
Bari mu bincika shi ga kowa da kowa daga amfani:
1. Lokacin amfani da na'urorin lantarki na polarographic, dumama aƙalla mintuna 15-30 kafin aunawa ko aunawa.
2. Saboda amfani da iskar oxygen ta hanyar lantarki, ƙaddamar da iskar oxygen a saman binciken zai ragu nan da nan, don haka yana da mahimmanci don motsa bayani yayin aunawa!A wasu kalmomi, saboda ana auna abun ciki na oxygen ta hanyar cinye iskar oxygen, akwai kuskuren tsari.
3. Saboda ci gaban da electrochemical dauki, da electrolyte maida hankali ne kullum ana cinyewa, don haka wajibi ne a ƙara electrolyte akai-akai don tabbatar da maida hankali.Don tabbatar da cewa babu kumfa a cikin electrolyte na membrane, ana buƙatar cire duk ɗakunan ruwa lokacin shigar da iska mai kai na membrane.
4. Bayan an ƙara kowane electrolyte, ana buƙatar sabon sake zagayowar aikin calibration (yawanci sifili calibration a cikin ruwa maras isashshen oxygen da slope calibration a cikin iska) sannan ko da an yi amfani da kayan aiki tare da diyya ta atomatik, dole ne ya kasance kusa. to Yana da kyau a daidaita wutar lantarki a zazzabi na maganin samfurin.
5. Ba za a bar kumfa a saman murfin da aka yi da shi ba a lokacin aikin ma'auni, in ba haka ba zai karanta kumfa a matsayin samfurin oxygen-cikakken samfurin.Ba a ba da shawarar yin amfani da shi a cikin tanki mai iska ba.
6. Saboda aiwatar da dalilai, da membrane shugaban ne in mun gwada da sirara, musamman sauki huda a cikin wani m matsakaici, kuma yana da gajere rayuwa.Abu ne mai amfani.Idan membrane ya lalace, dole ne a canza shi.
Don taƙaitawa, hanyar membrane shine cewa kuskuren daidaito yana da sauƙi ga ƙetare, lokacin kulawa yana da gajeren lokaci, kuma aikin ya fi damuwa!
Me game da hanyar fluorescence?Saboda ka'idar jiki, ana amfani da iskar oxygen ne kawai a matsayin mai haɓakawa yayin aikin aunawa, don haka tsarin ma'auni yana da 'yanci daga tsangwama na waje!Madaidaicin madaidaici, ba tare da kulawa ba, kuma mafi kyawun bincike ana barin su ba tare da kulawa ba har tsawon shekaru 1-2 bayan shigarwa.Shin da gaske hanyar kyalli ba ta da gazawa?Tabbas akwai!
Lokacin aikawa: Dec-15-2021