I-COD (imfuno yeoksijini yeoksijini) luvavanyo olusetyenziswa ngokubanzi olusetyenzisiweyo emanzi nge-oxygen efunekayo ekufumaneni i-organic kunye ne-inorganic into emanzini. Yiparamitha ebalulekileyo yokuvavanya umgangatho wamanzi kunye nokusebenza kakuhle kweenkqubo zonyango zamanzi amdaka.

Ukuqonda okunzulu malunga nendlela i-cod isebenza ngayo kuvavanyo lwamanzi, nceda ujonge kweli nqaku:"Umgaqo wokuSebenza we-VOD vial. "

Iityhubhu zovavanyo ze-COD

Iityhubhu ezikumgangatho ophakathi zisenziwa ngokubanzi ze-5.0 ze-borossililicate glass, ezinokuchasana ngokupheleleyo kwi-thermal eyothukisayo kunye nokukhukuliseka kwamachiza. Ityhubhu yovavanyo elungileyo ye-CoD kufuneka kube lula ukuyisebenzisa, kulula ukuyifaka kwaye ikhuphe isisombululo, kwaye ingabi nakukhathazeka ekuvusweni.

Iityhubhu zovavanyo ze-COD zenziwa ngokukodwa i-tube zeglasi esetyenziswayo kwinkqubo yohlalutyo lweCOD. Ezi tyhubhu ziqukethe inani elaziwayo le-potassium dichissromate (iarhente ye-oxidiching) kunye ne-sulfuric acid, kunye ne-catalyst. Iimpawu eziphambili ze

Iityhubhu zovavanyo ze-COD zibandakanya:

Umthamo: I-10 ml, kunye nobungakanani obuninzi be-12 ml

Ukuphakama: I-10 ± 0.02 cm

Ububanzi: 1.58 ± 0.02 cm

Intamo yangaphakathi: 0.95 ± 0.02 cm

Intamo yangaphandle: 1.50 ± 0.02 cm

Umgangatho weglasi ophezulu ophambili uqinisekisa uhlalutyo oluchanileyo lwezilwanyana kweziphumo ze-COD.

Inkqubo yovavanyo lweCoD

II-16mm yovavanyo lwe-16mmInkqubo ibandakanya la manyathelo alandelayo:

1. Isampulu yamanzi okanye amanzi amdaka (okwesiqhelo i-2 ml) yongezwa kwityhubhu yovavanyo lwe-CoD equlethe i-Degagement Reagent kunye ne-catalyst.

2. Ityhubhu igcinwe nge-polyproplene, i-PTFE-LEED-LEED-LEED-PHEAD NOKUGQIBELA KWI-BLOGEST kwi-PROGEST nge-150 ° C kwiiyure ezi-2.

3. Ngexesha lenkqubo yokufudumeza, umcimbi owenziwayo kwisampulu i-oxidods yi-potassium dichromate, yiyinciphisa kwi-chromium eluhlaza ehlanganisiweyo.

I-4. Ugxininiso lwe-CoD lugqitywe ngokulinganisa isampulu yediyithiweyo usebenzisa i-spectraphotometer kwi-wavelength ekhethekileyo, kuxhomekeka kuluhlu lwe-COD:

Uluhlu oluphantsi (5-150 PPM): Ilinganiselwe kwi-420 NM

Uluhlu oluphezulu (20-1500 PPM): Ukulinganiswa nge-620 NM

Ufuna ukwazi ngakumbi malunga netyhubhu ye-COD, nceda ujonge eli nqaku: I-COD yovavanyo lwe-COD kunye ne-PP CAP YOKUHLAZIYWA KOLWAZI

Ukulungiselela isampulu kunye nokuphatha

Amanzi amdaka kunye neesampulu ze-loges zinokuqulatha i-prools okanye i-charments. Iisampulu ezinjalo zinokuba homogening nge-blender ngaphambi kovavanyo ukuphucula ukuchaneka kunye nokuphindaphinda. Isixa samanzi afunekayo ukusifa isampulu ixhomekeke kuluhlu lwe-COD yetyhubhu yovavanyo.

I-COD RANS kunye nezicelo

Iityhubhu zovavanyo ze-CODziyafumaneka kwi-ranges eyahlukileyo yokuhlalisa iimodeli ezahlukeneyo:

Uluhlu oluphantsi: 5-150 i-PPM

Uluhlu oluphezulu: 20-1500 PPM

Ezi nqanaba zilungele ukuhlalutya iintlobo ezahlukeneyo zamanzi, kubandakanya:

a. Amanzi aphantsi konyango

b. Amanzi amdaka avela kwimithombo yomida yezamashishini nakwimizi-mveliso

c. Amanzi avela kwizityalo zonyango lwamanzi amdaka

d. Amanzi angaphezulu kunye namanzi aphantsi komhlaba

Ngokusebenzisa okufanelekileyoItyhubhu ye-CODUluhlu ngokusekwe kwi-cod yokugxila kwe-cod, iziphumo ezichanekileyo zinokufumaneka kulawulo lwenkqubo yokujonga amanzi esebenzayo kunye nenkqubo yonyango.

Ngolwazi oluthe kratya malunga neetyhubhu zovavanyo lwe-COD kunye nezicelo zazo kuhlalutyo lwamanzi, zibhekisa kweli nqaku:"Indlela i-COD ye-COD isetyenziswa ngayo kuhlalutyo lwamanzi."

Ngaphambili:

I-HPLC yahluka njani kwi-ion chromatography? Amanqaku ama-4

Okulandelayo:

Indima yeSepta kwi-GC PROPACE Vials

Iimpawu: I-COD-Declootion-Tube-Umthengisi I-COD-Tube i-cod-tube I-COD-Declove-Ixabiso I-COD-Vee-Tube Umvelisi we-cod-tube Umthengisi we-COD-Tube I-16mm-cod-vial I-COD-Tube-Ixabiso I-COD-vial

Umbuzo