Ukumisela iisampulu ezisemgangathweni yinto ekufuneka yenziwe rhoqo ngexesha lovavanyo. Ukuthatha uvavanyo olunxulumene neempawu zokuvavanya umgangatho wamanzi njengomzekelo, ngokumisela iisampulu ezisemgangathweni, ngokuthelekisa ixabiso elilinganisiweyo nexabiso lesalathiso sesampulu esemgangathweni, umntu unokugqiba ukuba impazamo yesixhobo sokuvavanya ingaphakathi koluhlu oluchaziweyo, kwaye omnye unokuqinisekisa ukuba indlela yokulinganisa yomvavanyi ichanekile na. Ke ngoko, ukumisela iisampulu ezisemgangathweni kubaluleke kakhulu ekuthembekeni kovavanyo.
Oku kulandelayo kuza kwazisa inkqubo yokumisela isampuli esemgangathweni ye-phosphorus iyonke, yiza uze kujonga.
Inyathelo lokuqala kukulungiselela izinto ezikhethekileyo zeLianhua Technology ze-total phosphorus-potassium dihydrogen phosphate (KH2PO4), amanzi acociweyo, i-beaker, i-stirging rod, kunye ne-1000mL volumetric flask ngaphambi kokuba icwangciswe.
Inyathelo lesibini kukuthatha i-potassium dihydrogen phosphate encinci (KH2PO4) uze uyomise kwi-110℃ kangangeeyure ezi-2, uze uyikhuphe emva kokuba ipholile.
Inyathelo lesithathu kukulinganisa ngokuchanekileyo i-0.2197 g ye-potassium dihydrogen phosphate eyomileyo (KH2PO4) uze uyibeke kwi-beaker, wongeze malunga ne-100 ml yamanzi acociweyo, uvuselele ide inyibilike ngokupheleleyo, uze wongeze i-5 mL ye-analytical grade sulfuric acid, uze uyidlulisele kwi-volumetric flask (i-beaker ingahlanjwa kathathu ngamanzi acociweyo, kwaye isisombululo sokuhlamba sifakwe kwi-volumetric flask), uze ekugqibeleni udibanise i-1000 mL.
Ngoku, isampulu ye-phosphorus epheleleyo engama-50 mg/L sele ilungile. Isampulu esemgangathweni elungisiweyo ingasetyenziselwa ukuvavanya nokulinganisa izixhobo, kwaye ubomi beshelufu ngokubanzi ziinyanga ezi-6.
Le ingentla yindlela yokumisela isampuli iyonke ye-phosphorus esemgangathweni kule ngxaki. Ndilandele ukuze ufunde ulwazi oluthe kratya ngovavanyo!
Ixesha leposi: Matshi-31-2025
