I-HOD ePhezulu eliPhezulu le-CoD
Ukuvavanywa kwemfuno yeoksijini (CoD) kubalulekile ekuvavanyeni umgangatho wamanzi, ngakumbi kulawulo lwamanzi amdaka kunye nokuhlolwa kwendalo. Iityhubhu ze-COD zizinto ezikhethekileyo zelebhu ezenzelwe ukuqhuba kakuhle ukulinganisa ngokuchanekileyo kwe-organic ingcoliseko yamanzi kwiisampulu zamanzi. Nantsi into ekufuneka uyazi ngezixhobo ezibalulekileyo:
1️⃣ Iindidi zeetyhubhu ze-COD
Iityhubhu ze-COD ziza kuYilo olwahlukeneyo, kubandakanya:
- Iityhubhu zangaphambiEzi tyhubhu ziqukethe i-redagents eyimfuneko kunye ne-catalysts, yenza lula inkqubo yokulungiselela isampulu. Umzekelo, i-lovibond® ibonelela nge-CoD vebe ye-COD ye-VLR elinganisa amanqanaba e-COD ukusuka kwi-2-60 mg \ / l, ibenza balungele uvavanyo olukhawulezileyo.
- Iityhubhu zenkcubeko yeglasi: Ngokwenziwe kwiglasi ephezulu ye-borosilicate, ezi tyhubhu zenzelwe ukumelana namaqondo obushushu aphezulu kwiinkqubo zokugaya. Bahlala beza ne-Polyproplene Caps ifakwe kwi-ptfe ukuqinisekisa ukutywina okukhuselekileyo kunye nokuthintela ungcoliseko.
2️⃣ Uluhlu lokuhlalutya
Iityhubhu ezahlukeneyo ze-COD zilungelelaniswe ranges ezithile zohlalutyo. Umzekelo, ezinye iityhubhu zenzelwe ukugxininisa kwe-5-150 PPM) ngelixa abanye benokuphatha i-ranges ephezulu (20-1500 PPM). Okuhluziweyo kuvumela iilebhu zokukhetha ityhubhu efanelekileyo ngokusekwe kwiimfuno zabo zovavanyo.
3️⃣ Ukunciphisa ukusetyenziswa
Iityhubhu ezininzi ze-COD zenzelwe ukuhambelana nezixhobo zelebhu zelebhu ezifana nebhloko ye-biesters kunye nee-spectrameters. Oku kujongwa ngemvume yokungqinelana kunye nokuphucula ukusebenza kweenkqubo zovavanyo. Iinketho zangaphambi kweSepta zikwaququzelela ukungena kube lula ukufumana i-Innelitions xa usebenzisa i-autosamplers.
4️⃣ Izicelo
Iityhubhu ze-COD zisetyenziswa ngokubanzi kwizicelo ezahlukeneyo, kubandakanya:
- Unyango lwamanzi amdaka: Ukubeka iliso ekusebenzeni kweenkqubo zonyango ngokulinganisa umthwalo wezinto eziphilayo.
- Ukuvavanywa kokusingqongileyo: Ukuvavanya ifuthe lokungcolisa kwimizimba yamanzi.
- Iinkqubo zemizi-mvelisoUkuqinisekisa ukuthotyelwa kwemigaqo yokusingqongileyo ngokubeka iliso kumgangatho wezinto ezinamafutha.