Yore ango ma jutiyo kudu pi nyang oxygen ma unyai i pii?

Lembe ma jutimo i ngom mwa uketho i iye: "Nwangu pa oxygen ma unyai i pii - yore mi Iodometric" (GB7489-1987), "Nwangu pa oxygen ma unyai i pii - Yore mi Electrochemical probe" (HJ506-2009), man American ASTM standard (D888-05). Lembe aryo ma kwong ubedo yore ma dhanu zo ungiyo i China, man mir aryo utiye yore ma dhanu ungiyu kudu i US Environmental Protection Agency.

Lembe ma pire tek pa yore mi iodometric pi pimo oxygen ma jucwinyo: Ngec pa oxygen ma unyai i pii jutimo ku yore mi iodometric. Med manganese sulfate man alkaline potassium iodide solution i pii mi yubu manganese hydroxide precipitate. Ni lembe ma rwinyo pa manganese hydroxide, edoko nyathotho ku oxygen ma juyiko i pii mi yubu manganese sulfate. I ngei dakika apar wiye abic, medu sulfuric acid ma nyai uketho jamb tiyo ku potassium iodide ma ju medo i pii, man iodine madwong, oxygen ma nyai, man rangi pa pii doko col. Kwan wel moku pa pii ma jucwalo ku tiyo ku pipette, ti ku starch calu lanyuth, titrate ku rwom ma lac, man kwanu wel pa oxygen ma jucwalo i pii.

Yore mi pimo iodine utiye ku lembe matung tung man eber ungo pi pimo i kabedo, ma kelo kare malac mi nwangu. I pii ma algae dongo i iye, photosynthesis medu wel pa oxygen ma juwodho, ma copo ketho oxygen ma ni i pii udok i rwom ma malu. I kare eni, ebedo tek ni ngeyo oxygen ma jucwinyo i pii ku tic ku yore mi iodine, man adwogi mi pimo ne epe maber.

Lembe ma pire tek pa electrode polarography pi pimo dissolved oxygen: voltage ma rwom pare ucungo ikind electrodes aryo, man electrons wok kud i cathode ni anode, ma kelo diffusion current; I lyethu moko, diffusion current utiye marom ku rwom pa dissolved oxygen; Keth winjiri ma rwate ikind dwong pa oxygen ma kawoni man ma ukadhu; Jam tic ne loko kwan pa ammeter ni oxygen ma jucwinyo man enyutho wel pa oxygen ma jucwinyo iwi jamb kum.

Yore mi electrode polarography pi nyang oxygen ma unyai i pii utiye ku yore mayot man ma nyap, man bei piny ma jutiyo kudu utiye piny, ma en e yore ma dhanu zo tiyo kudu. Ento ka oxygen uthum, lum bi bedo iwi membrane man electrode, ma bi bedo oxygen gradient ma bi dwoko piny rwom pa tic. Ka semi permeable membrane unyothere, electrolyte copo bedu ma rac, ma copo nyayu rwinyo pa kero pa battery, man rwinyo ne bibedo marac calu dwong pa oxygen ma juyiko i pii. Pieno, eber ni loko electrolyte man semi permeable membrane kare ku kare.

Lembe ma pire tek mi fluorescence pi pimo dissolved oxygen: ler macol ma juloko jutiyo kudu ikum piny ma rieny pi nyayu anyonga igi man wodhu ler makwar. Ni lembe pa molecules mi oxygen, sawa man tego pa ler makwar ma nyayu anyonga utiye marom ku dwong pa oxygen molecules. Ni tiyo ku ler makwar ma rwate ku ler macol calu lanyuth, pimu tung tung mi ler makwar ma nyayu anyonga ku mac ma lanyuth, man por wel mi calibration ma iiye pi kwanu kadhiri pa oxygen molecules. I ngei timo lembe moko, wodhu oxygen ma nyai.

Yore mi fluorescence LDO pi pimo oxygen ma unyai i pii utiye yore mayot man ma nyap. Ka juporo ku yore ario ma kwong, yore mi fluorescence LDO mi pimo oxygen ma unyai i pii mitu ngo calibration, etiye ku kare mi dwoko wang lembe pio pio, adwogi mi pimo ma rwinyore, epe ku yeny mi pii, epe ku nyayu peko, edwoko piny kare mi yweyu, man epe ku gwoko piny.