Ukuhlela amasampula ajwayelekile kuyinto edinga ukwenziwa njalo ngesikhathi sokuhlolwa. Uma sithatha ukuhlolwa okuhlobene nokuhlola izinkomba zekhwalithi yamanzi njengesibonelo, ngokuhlela amasampula ajwayelekile, ngokuqhathanisa inani elilinganisiwe nenani elibhekiselwe lesampula ejwayelekile, umuntu anganquma ukuthi iphutha lethuluzi lokuhlola lingaphakathi kobubanzi obubekiwe, kanti omunye angaqinisekisa ukuthi indlela yokulinganisa yomhloli ilungile yini. Ngakho-ke, ukuhlela amasampula ajwayelekile kubaluleke kakhulu ekuthembekeni kokuhlolwa.
Okulandelayo kuzokwethula inqubo yokucushwa kwesampula ejwayelekile ye-phosphorus iyonke, woza uzobheka.
Isinyathelo sokuqala ukulungiselela izinto ezikhethekile ze-Lianhua Technology ze-total phosphorus-potassium dihydrogen phosphate (KH2PO4), amanzi acwengekile, i-beaker, i-stirging rod, kanye ne-volumetric flask engu-1000mL ngaphambi kokuyilungiselela.
Isinyathelo sesibili ukuthatha inani elincane le-potassium dihydrogen phosphate (KH2PO4) bese uyomisa ku-110℃ amahora ama-2, bese uyikhipha ngemva kokupholisa.
Isinyathelo sesithathu ukukala ngokunembile u-0.2197 g we-potassium dihydrogen phosphate eyomile (KH2PO4) bese uyibeka ebhekheni, engeza cishe u-100 ml wamanzi acwecwe, uvuselele kuze kuncibilike ngokuphelele, bese ufaka u-5 mL we-analytical grade sulfuric acid, bese uyidlulisela ebhekheni elinomthamo (ibhekheni lingahlanzwa kathathu ngamanzi acwecwe, bese isixazululo sokuhlanza singezwa ebhekheni elinomthamo), bese ekugcineni sincibilikiswa sibe ngu-1000 mL.
Manje, isampula ejwayelekile ye-phosphorus engu-50 mg/L isilungile. Isampula ejwayelekile elungiselelwe ingasetshenziswa ukuhlola nokulinganisa amathuluzi, futhi isikhathi sokuphila seshelufu ngokuvamile siyizinyanga eziyi-6.
Okungenhla kuyindlela yokulungiselela isampula ejwayelekile ye-phosphorus ephelele kule nkinga. Ngilandele ukuze ufunde ulwazi olwengeziwe lokuhlola!
Isikhathi sokuthunyelwe: Mashi-31-2025
