I-F-, Cl-, NO2-, SO42-, Na+, K+, NH4+, Mg2+, Ca2+, njll. izinto ezidingekayo okufanele zitholwe ocwaningweni lwekhwalithi yomoya kanye nemvula.I-Ion chromatography (IC) iyindlela efaneleke kakhulu yokuhlaziywa kwalezi zinto ze-ionic.
Isampula yegesi yasemkhathini: Ngokuvamile sebenzisa ishubhu lokumunca eliqinile noma uketshezi lokumunca ukwenza isampula. Ukuze kuhlaziywe i-sulphur dioxide ne-nitrogen oxides, ngokuvamile kuyadingeka ukwengeza inani elifanele le-H2O2 kusixazululo sokumuncwa noma sokukhipha, oxidize SO2 kuya ku-SO42 -, bese emva kwalokho. nquma ngendlela ye-IC.
Isampula lemvula: Ngemva kokuthatha isampula, kufanele ihlungwe ngokushesha futhi igcinwe esiqandisini ku-4℃, futhi ihlaziywe ngokushesha okukhulu. Ukuze kuhlaziywe ama-cations, i-asidi efanele kufanele yengezwe ngemva kokusampula.
Isampula lezinhlayiya:Amasampula emvelo evolumu ethile noma isikhathi aqoqwa, futhi 1/4 yesampula eqoqiwe yasikwa ngokunembile.I-membrane ehlungiwe yasikwa ngesikelo esihlanzekile futhi yafakwa ebhodleleni lepulasitiki (i-polyester PET), amanzi e-deionized ayengezwa, akhishwa ngamagagasi e-ultrasonic, bese amavolumu alungiswa ngebhodlela le-volumetric.Ngemuva kokuthi okukhishiwe kuhlungwe ngolwelwesi lwesihlungi se-microporous esingu-0.45µm, lungahlaziywa; Amasampula othuli lwemvelo athululwe kumabhekha anamanzi amaningi akhishwe nge-deionized abese ekhishwa ngamaza e-ultrasonic, ahlungwa futhi anqunywe ngendlela efanayo engenhla.
Isikhathi sokuthumela: Apr-18-2023