ixabiso ityhubhu uvavanyo cod

I-16mm ye-COD Test Tube yityhubhu ekhethekileyo yeglasi eyenzelwe uvavanyo lwe-Chemical Oxygen Demand (COD) elabhoratri. Inobubanzi obuyi-16mm, inika indawo eyaneleyo yokuqokelela isampulu kunye nohlalutyo. Ityhubhu yenziwe ngeglasi ephezulu, iqinisekisa ukuqina kunye nokuhambelana kweekhemikhali kwimilinganiselo echanekileyo nethembekileyo yeCOD.

Imfuno ye-oksijini yemichiza luvavanyo olubalulekileyo lokuvavanya umgangatho wamanzi amdaka kunye namanzi amdaka phambi kokuba alahlwe. Uvavanyo lwe-Chemical Oxygen Demand (COD) luqikelela imfuneko ye-oksijini yamanzi amdaka kwaye isetyenziselwa ukubeka iliso kunye nokulawula ukukhutshwa, kunye nokuvavanya ukusebenza kwezityalo zonyango. Impembelelo yokukhutshwa kwamanzi amdaka okanye asetyenzisiweyo kumanzi afunyenweyo iqikelelwa yimfuno yawo ye-oxygen. Oku kungenxa yokuba ukukhutshwa kweoksijini emanzini endalo kunciphisa amandla ayo okugcina ubomi basemanzini. Uvavanyo lwe-COD ke ngoko lwenziwa njengesiqhelo kwiilabhoratri zamanzi kunye neenkampani zoshishino.

I-COD Test Tube yenziwe ngeglasi ye-borosilicate, enokunciphisa utshintsho lwe-pH kunye neengcoliseko ezinokuphuma kwiglasi ye-soda-lime. Ityhubhu yokuvavanya ukwetyisa kweglasi ingasetyenziselwa uhlalutyo kumaqondo obushushu angaphezu kwama-130 degrees Celsius. Yenziwe ngokugcinwa kwebhubhoratri kwiinjongo ezahlukeneyo eziqhelekileyo kwaye inokubamba phantse nantoni na.

I-Aijiren ivelisa i-COD Test Tube yokuvavanya umgangatho wamanzi. I-COD Test Tube ingasetyenziswa kwiintlobo ngeentlobo zezixhobo zokuhlalutya. Ngenxa yokuba uhlalutyo lufuna ukufudumeza, ii-reagents kwi-COD Test Tube zifuna ukufudumeza okuphezulu kobushushu okanye ezinye ii-chemical reactions ezinamandla, ezichaphazela umgangatho weglasi. Ngeemfuno eziphezulu, i-Aijiren isebenzisa iglasi ye-inert ekumgangatho ophezulu ukuvelisa i-COD Test Tube, eyenza kube lula ukwenzeka kweekhemikhali.

Iityhubhu zoVavanyo lwe-COD eziveliswe yi-Aijiren zihlala zisetyenziselwa imifuniselo yemibala yokwetyisa. Olu hlobo lovavanyo luneemfuno eziphezulu ze-COD Test Tubes kwaye lunoluhlu olubanzi lwezicelo. Amachiza, i-petroleum, ikhemikhali, umgangatho wamanzi, njl.njl. zonke kufuneka zisebenzise imifuniselo ye-colorimetric yokwetyisa. umfuniselo. Iityhubhu zoVavanyo lweCOD zika-Aijiren zinokuhlangabezana kakuhle neemfuno zezinto ezityiwayo kuvavanyo lokugaywa kombala.

Iityhubhu zoVavanyo lwe-COD eziveliswe yi-Aijiren zihlala zisetyenziselwa ukubona imfuno ye-oksijini yemichiza. Iglasi esetyenziswa kwi-COD Test Tubes eveliswe ngu-Aijiren inokumelana nobushushu obuphezulu, ukumelana nokugqwala, kwaye inokukhusela iisampulu ngaphandle kokuchaphazela iziphumo zovavanyo. Imathiriyeli ekrwada ye-Aijiren ikumgangatho ophezulu kunye namava emveliso Ininzi, ngamaxabiso emveliso athandekayo, ngumboneleli okumgangatho ophezulu wezinto ezityiwayo zechromatographic.

Kolu vavanyo kusetyenziswa i-reagent engenanto endaweni yesiqhelo samanzi esingenanto ekubhekiswa kuyo kwimiyalelo yokusebenza yephotometer ngokubanzi. I-reagent blank ilungiswa ngokudibanisa amanzi adityanisiweyo okanye adibeneyo kwi-tube ye-reagent kwaye emva koko ukugaya ityhubhu ngendlela efanayo nesampuli yamanzi.
Akuyimfuneko ukulungiselela i-reagent engenanto ngexesha ngalinye uvavanyo luqhutywa. I-tube engenanto ye-reagent inokulungiswa ngeveki kwaye isetyenziswe ngokuphindaphindiweyo kunye nazo zonke iisampuli ezilungiselelwe ukusuka kwibhetshi efanayo yeetyhubhu ze-reagent. I-reagent engenanto kufuneka igcinwe ebumnyameni phakathi kokusetyenziswa.

Ngovavanyo lwe-tube ye-Aijiren COD, umsebenzisi ngamnye unokwenza lula ukukhangela amanzi abukhali kwaye achanekileyo.
Ixesha elifunekayo kwinkqubo yokulinganisa lifutshane kakhulu, ngakumbi uhlalutyo oluqhelekileyo kunye nokulinganisa uchungechunge, ngelixa linciphisa kakhulu umsebenzi.
Ityhubhu yoVavanyo lwe-COD iqulethe idosi echanekileyo ye-reagent. Ke ngoko, uluhlu olugqithisileyo lweekhemikhali luyaphetshwa kwaye ukhuseleko lomsebenzi luyaphuculwa.

Iinkcukacha zoVavanyo lweMfuno yeOksijini yeMichiza:

I-2mL yesampula yamanzi okanye i-watse yamanzi yongezwa kwi-tube ye-glass ye-16mm yenkcubeko equlethe i-reagent digestion kunye ne-catalyst. I-tube ifakwe i-polypropylene, i-PTFE ifakwe i-cap kwaye ishushu kwi-block digester kwi-150C ngeeyure ze-2. I-chromium ye-Hexavalent e-orenji iyancitshiswa ibe yi-chromium e-greenish trivalent. Uluhlu lokuhlalutya kwindlela ye-spectrophotometric yi-5-150ppm (ilinganiswe kwi-420nm).

I-COD Tubetests esetyenzisiweyo iqulethe i-asidi eqinile ye-sulfuric kunye nezinye iikhemikhali, ngoko ke ii-reagents kufuneka ziphathwe ngononophelo. Iziqulatho zombhobho kufuneka zilahlwe ngokuhambelana neemfuno zamagunya asekuhlaleni.
Ezi ityhubhu zovavanyo ziqinisekisiweyo ze-SGC. Le mibhobho ingasetyenziswa kube kanye kuphela, ngoko ayinakuphinda isetyenziswe.

Ukusebenzisa isifudumezi sedijithali kuvavanyo lwe-COD, seta ubushushu kwisiboniso sedijithali ukuya kwi-150°C. Akukho akhawunti kufuneka isifudumezi simiselwe kwiqondo lobushushu elingaphezulu kwelo lichaziweyo njengoko oku kunokubangela ingozi ngokunyuka koxinzelelo kwiityhubhu zeCOD.

Ifanelekile kwii-colorimeters kunye nezixhobo zokuvavanya kwimarike
Kwakhona zifanelekile izixhobo kunye neekiti zokuvavanya
Ukuvula i-vials etywiniweyo ekulula ukuyivula isusa umngcipheko wokungcola
Yandisa ubomi beshelufu ukuya kwiminyaka emihlanu
Asetyenziselwa ukuvavanya amanzi amdaka kamasipala; Amanzi amdaka kwimizi-mveliso kunye novavanyo lolawulo lwenkqubo; uvavanyo lwamanzi kokusingqongileyo

Vula ityhubhu yovavanyo lwe-COD, yibambe nge-engile kwaye wongeze kancinci
2.0 mL yesisombululo isampuli pretreated ukusuka ityhubhu yokusabela ngaphandle ukuxuba ukuze umaleko ezimbini ezahlukeneyo
Isicelo
Screw cap ngokukhuselekileyo ukuze uvavanye ityhubhu, bamba ityhubhu ngekepusi, faka ityhubhu kwibhotile yokhuseleko kwaye ungcangcazele
(Isilumkiso, ityhubhu yovavanyo iba shushu). Beka ityhubhu kwibhloko yokufudumeza. Qalisa inkqubo yokufudumeza.
Emva kwe-2 h susa ityhubhu yokuvavanya kwibhloko yokufudumeza, vumela ukupholisa phantsi kwiqondo lokushisa kwaye ugubungele ngobumnene
Ibhotile yeReagent
Coca ngaphandle kwetyhubhu yovavanyo kunye nomlinganiselo.
Lungisa ifotometer ibe zero ngokusebenzisa ixabiso elingenanto "NULL"

Imfuno yeoksijini yemichiza luvavanyo olubalulekileyo lokuvavanya umgangatho wamanzi amdaka kunye namanzi amdaka phambi kokuba akhutshelwe. Uvavanyo lwe-Chemical Oxygen Demand (COD) luqikelela imfuneko ye-oksijini yamanzi amdaka kwaye isetyenziselwa ukubeka iliso kunye nokulawula ukukhutshwa, kunye nokuvavanya ukusebenza kwezityalo zonyango. Impembelelo yokukhutshwa kwamanzi amdaka okanye asetyenzisiweyo kumanzi afunyenweyo iqikelelwa yimfuno yawo ye-oxygen. Oku kungenxa yokuba ukukhutshwa kweoksijini emanzini endalo kunciphisa amandla ayo okugcina ubomi basemanzini. Uvavanyo lweCOD ke ngoko lwenziwa njengesiqhelo kwiilabhoratri zamanzi kunye neenkampani zoshishino.

Ngovavanyo lwe-tube ye-Aijiren COD, umsebenzisi ngamnye unokwenza lula ukukhangela amanzi abukhali kwaye achanekileyo.
Ixesha elifunekayo kwinkqubo yokulinganisa lifutshane kakhulu, ngakumbi uhlalutyo oluqhelekileyo kunye nokulinganisa uchungechunge, ngelixa linciphisa kakhulu umsebenzi.
Ityhubhu yoVavanyo lwe-COD iqulethe idosi echanekileyo ye-reagent. Ke ngoko, uluhlu olugqithisileyo lweekhemikhali luyaphetshwa kwaye ukhuseleko lomsebenzi luyaphuculwa.

Uvavanyo lwe-Chemical Oxygen Demand (COD) lusetyenziswa ngokubanzi njengomlinganiselo wokungcola kwezinto eziphilayo ngokumisela ubuninzi be-oksijini efunekayo kwi-oxidation yeentlobo ezincitshisiweyo ezibandakanya izinto eziphilayo, kwisampuli yamanzi usebenzisa i-agent ethile ye-oxidizing, ubushushu kunye nokunciphisa ixesha. Uvavanyo lwe-COD luphawu olungcono longcoliseko lwendalo kumanzi amdaka emizi-mveliso aneecyanides kunye neentsimbi ezinzima. Uvavanyo lwe-COD lunika impendulo ngokukhawuleza kwiimeko eziguqukayo ngaphambi kokuba kuphuhliswe iingxaki ezinzima. Iibhotile ze-COD zikaLovibond ziyahambelana ne-BOTH Lovibond kunye ne-Hach® colorimeters.