Iyo kemikari yeokisijeni inoda (COD) yekuyera nzira, ingave nzira yereflux, nzira yekukurumidza kana yephotometric nzira, inoshandisa potassium dichromate seyo oxidant, sirivheri sulfate secatalyst, uye mercury sulfate seyo masking agent ye chloride ions. Pasi peiyo acidic mamiriro e sulfuric acid Kutemerwa kweCOD Kutsinhana nzira yakavakirwa pakugaya system. Nechikonzero ichi, vanhu vakaita basa rakawanda rekutsvagisa nechinangwa chekuchengetedza reagents, kuderedza kushandiswa kwesimba, kuita kuti mashandiro acho ave nyore, nekukurumidza, kwakaringana uye akavimbika. Iyo yekukurumidza digestion spectrophotometric nzira inosanganisa zvakanakira nzira dziri pamusoro. Zvinoreva kushandisa chubhu yakavharwa sechubhu yekugaya, kutora shoma shoma yemvura sampu uye reagents muchubhu yakavharwa, ichiiisa mune diki diki tembiricha digester, ichiipisa painopisa tembiricha yekugaya, uye kushandisa spectrophotometer Iyo COD kukosha ndeye. yakatemerwa nefotoometry; tsanangudzo yechubhu yakavharwa ndeye φ16mm, kureba i100mm ~ 150mm, kuvhura nemadziro emadziro e 1.0mm ~ 1.2mm muromo wemhepo, uye chivharo chekuisa chisimbiso chinowedzerwa. Iyo yakavharwa chubhu ine acid inodzivirira, yakanyanya tembiricha kuramba, kumanikidza kuramba uye anti-kuputika zvinhu. Chubhu yakavharwa inogona kushandiswa pakugaya, inonzi digestion chubhu. Imwe mhando yechubhu yakavharwa inogona kushandiswa kugaya uye inogona zvakare kushandiswa se colorimetric chubhu ye colorimetry, iyo inonzi digestion colorimetric chubhu. Iyo diki yekudziya digester inoshandisa aluminium block semuviri wekudziya, uye maburi ekudziya anogoverwa zvakaenzana. Iyo dhayamita yegomba i φ16.1mm, kudzika kwegomba i50mm ~ 100mm, uye tembiricha yekudziisa ndiyo tembiricha yekugayira. Panguva imwecheteyo, nekuda kwehukuru hwakakodzera hwechubhu yakavharwa, iyo digestion reaction fluid inotora chikamu chakakodzera chenzvimbo muchubhu yakavharwa. Chikamu chechubhu chekudya chine reagents chinopinzwa mugomba rekupisa remoto, uye pasi pechubhu rakavharwa rinopisa pakupisa kwe165 ° C; chikamu chepamusoro chechubhu yakavharwa yakakwirira kudarika gomba rekupisa uye rinosangana nenzvimbo, uye pamusoro pemuromo wechubhu inoderedzwa kusvika anenge 85 ° C pasi pekutonhora kwechisikigo kwemhepo; Musiyano wetembiricha unovimbisa kuti mvura inobuda muchubhu diki yakavharwa iri mune inofashaira zvishoma pane tembiricha isingaperi. Iyo compact COD reactor inogona kugarisa 15-30 yakavharwa machubhu. Mushure mekushandisa chubhu yakavharwa yekuita digestion, kuyerwa kwekupedzisira kunogona kuitwa pane photometer uchishandisa cuvette kana colorimetric chubhu. Samples ine COD values ye100 mg/L kusvika 1000 mg/L inogona kuyerwa pawavelength ye600 nm, uye samples ine COD value ye15 mg/L kusvika 250 mg/L inogona kuyerwa pawavelength ye440 nm. Iyi nzira ine hunhu hwekuita nzvimbo diki, kuderera kwesimba rekushandisa, diki rejenti kushandiswa, kushomeka kwemarara emvura, kuderera kwesimba rekushandisa, kushanda kuri nyore, kwakachengeteka uye kwakagadzikana, kwakaringana uye kwakavimbika, uye kwakakodzera kutsunga kukuru, nezvimwe, kugadzira. nekuda kwekukanganisa kweiyo classic standard nzira.
Lianhua COD precast reagent vials kushanda matanho:
1. Tora akawanda COD precast reagent vials (range 0-150mg / L, kana 20-1500mg / L, kana 200-15000mg / L) uye uiise pa test tube rack.
2. Kunyatsotora 2ml yemvura yakasvibiswa uye uiise muNo. 0 reagent tube. Tora 2ml yemuenzaniso kuti uedzwe mune imwe reagent chubhu.
3. Simbisa chivharo, zunza kana kushandisa musanganisi kuti usanganise mhinduro yacho zvakakwana.
4. Isai test chubhu mu digester uye digest pa 165 ° kwemaminitsi makumi maviri.
5. Kana nguva yapera, bvisa test tube uye uisiye kwemaminitsi maviri.
6. Isai test tube mumvura inotonhora. Maminitsi maviri, inotonhorera kusvika kukamuri tembiricha.
7. Pukuta rusvingo rwekunze rwechubhu yekuedza, isa nhamba ye0 muCOD photometer, shandisa "Blank" bhatani, uye chinyorwa chicharatidza 0.000mg / L.
8. Isa mamwe machubhu ebvunzo munhevedzano uye tinya bhatani re "TEST". Kukosha kweCOD kucharatidzwa pachiratidziri. Unogona kudzvanya bhatani rekudhinda kuti utsikise zvabuda.
Nguva yekutumira: May-11-2024
