Kuyedzwa kweCOD chiratidzo chirinani chekusvibisa organic mumvura yetsvina yemaindasitiri ine cyanides uye zvinorema simbi. Kuyedzwa kweCOD kunopa mhinduro nekukurumidza kune shanduko yemamiriro ezvinhu asati atanga matambudziko akakomba. 

Muyedzo iyi reagent isina chinhu inoshandiswa pachinzvimbo chemvura yakajairwa isina chinhu inotaurwa mune yakajairika photometer yekushandisa mirayiridzo. Iyo reagent isina chinhu inogadzirwa nekuwedzera deionised kana distilled mvura kune reagent chubhu uye ipapo kugaya chubhu nenzira yakafanana neyeyemvura sampuli.
Izvo hazvifanirwe kugadzirira reagent isina chinhu pese panoitwa bvunzo. Iyo reagent isina chubhu inogona kugadzirirwa vhiki nevhiki uye inoshandiswa kakawanda nemasampuli ese akagadzirwa kubva kune imwechete batch reagent machubhu. Iyo reagent isina chinhu inofanira kuchengetwa murima pakati pekushandisa.

Kudiwa kwemakemikari okisijeni muyedzo wakakosha wekuongorora mhando yemvura inoyerera uye tsvina isati yaburitswa. Muedzo weChemical Oxygen Demand (COD) unofanotaura zvinodikanwa zveokisijeni mutsvina uye inoshandiswa pakutarisa nekudzora zvinobuda, uye kuongorora mashandiro echirimwa. Mhedzisiro yekuyerera kwetsvina kana tsvina yemvura pamvura inotambirwa inofanotaurwa nekudiwa kwayo kweokisijeni. Izvi zvinodaro nekuti kubviswa kweokisijeni kubva mumvura yakasikwa kunoderedza kugona kwayo kuchengetedza hupenyu hwemumvura. Iyo COD bvunzo saka inoitwa semazuva ese mumarabhoritari ezvemvura zvinoshandiswa nemakambani emaindasitiri.

NeAijiren COD chubhu bvunzo, mushandisi wega wega anogona kuita nyore kuona uye kuona kwemvura kwakaringana.
Iyo nguva inodiwa yekuyera maitiro inopfupikiswa zvakanyanya, kunyanya kuongororwa kwakajairwa uye kuyerwa kwakatevedzana, uku ichideredza zvakanyanya basa.
Iyo COD Yekuyedza chubhu ine chaiyo dosi reiyo reagent. Naizvozvo, yakawandisa kemikari inventory inodziviswa uye kuchengetedzwa kwebasa kunovandudzwa.

Details of Chemical Oxygen Demand Test:

2mL yemvura kana watse sampu yemvura inowedzerwa kune 16mm girazi tsika chubhu ine digestion reagent uye catalyst. Iyo chubhu yakavharwa ne polypropylene, PTFE yakavharwa kavha uye inopisa mu block digester pa 150C kwemaawa maviri. Iyo orange Hexavalent chromium yakaderedzwa kuita greenish trivalent chromium. Iyo analytical range ye spectrophotometric nzira ndeye 5-150ppm (yakayerwa pa420nm).

Iyo yakashandiswa COD Tubetests ine yakasimba sulfuric acid uye mamwe makemikari, saka reagents inofanirwa kubatwa nemazvo. Zviri mupombi zvinofanira kuraswa maererano nezvinodiwa nevakuru venzvimbo.
Aya machubhu ebvunzo ane SGC anosimbiswa. Aya machubhu anogona kushandiswa kamwe chete, saka haagone kushandiswa zvakare.

Kuti ushandise hita yedhijitari pabvunzo yeCOD, isa tembiricha padhijitari kuratidza kusvika 150°C. Hapana chikonzero kuti hita inofanira kuiswa patembiricha yepamusoro kupfuura iyo yataurwa sezvo izvi zvichigona kukonzera njodzi kuburikidza nekumanikidza kuvaka-up mumachubhu eCOD.

Inokodzera colorimeters uye test kits pamusika
Uyewo akakodzera zviridzwa uye test kits
Zvirinyore-ku-kuvhurika zvakavharwa mabhodhoro anobvisa njodzi yekukanganiswa-kusvibiswa
Wedzera hupenyu hwesherufu kusvika kumakore mashanu
Inoshandiswa pakuongorora mvura yetsvina yekanzuru; indasitiri yetsvina yemvura uye maitiro ekudzora maitiro; kuongororwa kwemvura yezvakatipoteredza

Vhura COD test chubhu, ibate pakona uye wowedzera zvishoma nezvishoma
2.0 mL ye pretreated sampuli mhinduro kubva kune reaction chubhu pasina kusanganisa kuitira kuti maviri akaparadzana akaturikidzana
Application
Kavha kepu yakachengeteka kuti uedze chubhu, bata chubhu nekavha, isa chubhu mubhodhoro rekuchengetedza uye zunza
(Kuchenjerera, test tube inopisa). Isa chubhu mumudziyo wekudziya. Tanga kudziyisa purogiramu.
Mushure memaawa maviri bvisa test tube kubva pakupisa block, bvumira kutonhora kusvika kukamuri tembiricha uye zunza zvinyoro
Reagent Bhodhoro
Chenesa kunze kwechubhu yebvunzo uye kuyera.
Gadzirisa photometer kusvika zero nekushandisa isina chinhu kukosha "NULL"

Kudiwa kwemakemikari okisijeni muyedzo wakakosha wekuongorora mhando yemvura inoyerera uye tsvina isati yaburitswa. Muedzo weChemical Oxygen Demand (COD) unofanotaura zvinodikanwa zveokisijeni mutsvina uye inoshandiswa pakutarisa nekudzora zvinobuda, uye kuongorora mashandiro echirimwa. Mhedzisiro yekuyerera kwetsvina kana tsvina yemvura pamvura inotambirwa inofanotaurwa nekudiwa kwayo kweokisijeni. Izvi zvinodaro nekuti kubviswa kweokisijeni kubva mumvura yakasikwa kunoderedza kugona kwayo kuchengetedza hupenyu hwemumvura. Iyo COD bvunzo saka inoitwa semazuva ese mumarabhoritari ezvemvura zvinoshandiswa nemakambani emaindasitiri.

NeAijiren COD chubhu bvunzo, mushandisi wega wega anogona kuita nyore kuona uye kuona kwemvura kwakaringana.
Iyo nguva inodiwa yekuyera maitiro inopfupikiswa zvakanyanya, kunyanya kuongororwa kwakajairwa uye kuyerwa kwakatevedzana, uku ichideredza zvakanyanya basa.
Iyo COD Yekuyedza chubhu ine chaiyo dosi reiyo reagent. Naizvozvo, yakawandisa kemikari inventory inodziviswa uye kuchengetedzwa kwebasa kunovandudzwa.

Muedzo weChemical Oxygen Demand (COD) unoshandiswa zvakanyanya sechiyero chekusvibiswa kwehupenyu kuburikidza nekuona huwandu hweokisijeni hunodiwa pakuita oxidation yemhando dzakaderedzwa dzinosanganisira organic matter, mumucherechedzo wemvura uchishandisa imwe oxidizing agent, tembiricha uye kuderedza nguva. Kuyedzwa kweCOD chiratidzo chirinani chekusvibisa organic mumvura yetsvina yemaindasitiri ine cyanides uye zvinorema simbi. Kuyedzwa kweCOD kunopa mhinduro nekukurumidza kune shanduko yemamiriro ezvinhu asati atanga matambudziko akakomba. Lovibond's COD vials inoenderana neBOTH Lovibond uye Hach® colorimeters.