Indlela yokulinganisa imfuno yekhemikhali ye-oksijini (COD), nokuba yindlela ye-reflux, indlela ekhawulezayo okanye indlela ye-photometric, isebenzisa i-potassium dichromate njenge-oxidant, i-sulfate yesilivere njenge-catalyst, kunye ne-mercury sulfate njenge-agent yokufihla i-ion ye-chloride. Ngaphantsi kweemeko ze-asidi ye-asidi ye-sulfuric Ukumiselwa kwe-COD yokumisela indlela esekelwe kwinkqubo yokugaya. Ngesi siseko, abantu baye benza umsebenzi omninzi wophando ngenjongo yokugcina i-reagents, ukunciphisa ukusetyenziswa kwamandla, ukwenza umsebenzi ube lula, ukhawuleza, uchanekile kwaye uthembekile. Indlela ye-spectrophotometric yokugaya ngokukhawuleza idibanisa izibonelelo zeendlela ezingentla. Kubhekiselele ekusebenziseni ityhubhu etywiniweyo njengetyhubhu yokugaya, ukuthatha isampuli encinci yamanzi kunye ne-reagents kwityhubhu etywiniweyo, ibeke kwi-digester encinci yeqondo lokushisa, ukuyifudumeza kwiqondo lokushisa rhoqo lokugaya, kunye nokusebenzisa i-spectrophotometer Ixabiso le-COD li. igqitywe yifotoometry; ukucaciswa kwetyhubhu etywiniweyo yi-φ16mm, ubude buyi-100mm ~ 150mm, ukuvuleka ngodonga oluyi-1.0mm ~ 1.2mm ngumlomo ojikelezayo, kunye nesimbozo sokutywinwa kwe-spiral siyongezwa. Ityhubhu etywiniweyo inokumelana ne-asidi, ukumelana nobushushu obuphezulu, ukumelana noxinzelelo kunye neempawu zokuchasana nokudubula. Ityhubhu evaliweyo ingasetyenziselwa ukwetyisa, ebizwa ngokuba yityhubhu yokwetyisa. Olunye uhlobo lwetyhubhu etywiniweyo lunokusetyenziselwa ukwetyisa kwaye lunokusetyenziswa njengetyhubhu ye-colorimetric ye-colorimetry, ebizwa ngokuba yi-digestion colorimetric tube. I-digester encinci yokufudumala isebenzisa ibhloko ye-aluminium njengomzimba wokufudumeza, kwaye imingxuma yokufudumeza ihanjiswa ngokulinganayo. Idayamitha yomngxuma yi φ16.1mm, ubunzulu bomngxuma yi-50mm ~ 100mm, kunye neseti yobushushu bobushushu bobushushu bokwetyisa. Kwangaxeshanye, ngenxa yobungakanani obufanelekileyo betyhubhu etywiniweyo, ulwelo lokuphendula lokugaya luthatha umlinganiselo ofanelekileyo wendawo kumbhobho etywiniweyo. Inxalenye yetyhubhu yokugaya equkethe i-reagents ifakwe kwimbobo yokufudumala ye-heater, kwaye i-bottom ye-tube evaliweyo ishushu kwiqondo lokushisa elihlala li-165 ° C; indawo ephezulu yombhobho evaliweyo iphezulu kunomngxunya wokufudumeza kwaye ibonakaliswe kwindawo, kwaye umphezulu womlomo wombhobho uyancipha ukuya kwi-85 ° C phantsi kokupholisa kwendalo komoya; Umahluko kwiqondo lobushushu uqinisekisa ukuba ulwelo reaction kwityhubhu encinane etywiniweyo ikwimo kancinane abilayo reflux kule ubushushu rhoqo. I-compact COD reactor inokufaka i-15-30 iityhubhu ezitywiniweyo. Emva kokusebenzisa ityhubhu etywiniweyo yokusabela kokugaya, umlinganiselo wokugqibela unokwenziwa kwi-photometer usebenzisa i-cuvette okanye i-colorimetric tube. Iisampulu ezinamaxabiso e-COD ye-100 mg / L ukuya kwi-1000 mg / L inokulinganiswa kwi-wavelength ye-600 nm, kunye neesampuli ezinexabiso le-COD le-15 mg / L ukuya kwi-250 mg / L inokulinganiswa kwi-wavelength ye-440 nm. Le ndlela ineempawu zokusebenza kwendawo encinci, ukusetyenziswa kwamandla aphantsi, ukusetyenziswa kwe-reagent encinci, ukunciphisa ulwelo lwenkunkuma, ukusetyenziswa kwamandla aphantsi, ukusebenza okulula, okukhuselekileyo kunye nokuzinza, kuchanekile kwaye kuthembekile, kwaye kukulungele ukuzimisela okukhulu, njl. ngenxa yeentsilelo zendlela yomgangatho oqhelekileyo.
Lianhua COD precast reagent reagent amanyathelo okusebenza:
1. Thatha i-COD precast reagent vials (uluhlu lwe-0-150mg / L, okanye i-20-1500mg / L, okanye i-200-15000mg / L) kwaye uzibeke kwi-tube rack rack.
2. Thatha ngokuchanekileyo i-2ml yamanzi adibeneyo kwaye uyibeke kwi-No. Thatha i-2ml yesampuli ukuze ihlolwe kwenye ityhubhu ye-reagent.
3. Qinisa i-cap, xuba okanye usebenzise umxube ukuxuba isisombululo ngokucokisekileyo.
4. Faka ityhubhu yokuvavanya kwi-digester kwaye ugaye kwi-165 ° imizuzu engama-20.
5. Xa ixesha liphelile, khupha ityhubhu yokuvavanya kwaye uyishiye imizuzu emi-2.
6. Faka ityhubhu yovavanyo emanzini abandayo. Imizuzu emi-2, ipholile kwiqondo lokushisa.
7. Sula udonga lwangaphandle lwetyhubhu yokuvavanya, faka i-tube ye-No.
8. Beka ezinye iibhubhu zokuvavanya ngokulandelelana kwaye ucinezele iqhosha elithi "TEST". Ixabiso le-COD liya kuboniswa kwisikrini. Ungacinezela iqhosha lokushicilela ukuprinta iziphumo.
Ixesha lokuposa: May-11-2024
