Uburyo bwo gupima ibintu byahagaritswe: uburyo bwa gravimetric

1. Uburyo bwo gupima ibintu byahagaritswe: uburyo bwa gravimetric
2. Gupima ihame ryuburyo
Shungura icyitegererezo cy'amazi hamwe na 0.45μm ya filteri ya membrane, uyisige kuyungurura hanyuma uyumishe kuri 103-105 ° C kugeza uburemere buhoraho, hanyuma ubone ibintu byahagaritswe nyuma yo gukama kuri 103-105 ° C.
3. Kwitegura mbere yo kugerageza
3.1
3.2 Impirimbanyi zisesenguye
3.3.Kuma
3.4.Akayunguruzo kayunguruzo gafite ubunini bwa 0.45 mm na diameter ya 45-60 mm.
3.5, ikirahure
3.6.Pompe
3.7 Gupima icupa rifite diameter y'imbere ya mm 30-50
3.8, amenyo atagira amenyo
3.9, amazi yatoboye cyangwa amazi yubuziranenge bungana
4. Suzuma intambwe
4. desiccator, no gupima.Subiramo gukama, gukonjesha, no gupima kugeza uburemere burigihe (itandukaniro riri hagati yuburemere bubiri ntabwo rirenze 0.5mg).
4.2 Shyira icyitegererezo cyamazi nyuma yo gukuraho ibintu byahagaritswe, bapima 100ml yicyitegererezo kivanze neza hanyuma uyungurure hamwe.Reka amazi yose anyure muyungurura.Noneho oza inshuro eshatu ukoresheje 10ml y'amazi yatoboye buri gihe, hanyuma ukomeze kuyungurura kugirango ukureho amazi.Niba icyitegererezo kirimo amavuta, koresha 10ml ya peteroli ether yoza ibisigazwa kabiri.
4 muri desiccator, reka bikonje mubushyuhe bwicyumba, hanyuma ubipime, byumye inshuro nyinshi, gukonjesha, no gupima kugeza igihe itandukaniro ryibiro riri hagati yuburemere bwombi ari ≤ 0.4mg.i
5. Kubara:
Ibihagaritswe byahagaritswe (mg / L) = [(AB) × 1000 × 1000] / V.
Muri formula: A —— ihagaritswe ikomeye + iyungurura membrane hamwe no gupima uburemere bw'icupa (g)
B —— Membrane no gupima uburemere bw'icupa (g)
V —— urugero rw'amazi
6.1 Ingano ikoreshwa yuburyo Ubu buryo burakwiriye kugena ibimera byahagaritswe mumazi mabi.
6.2 Icyitonderwa (gusubiramo):
Gusubiramo: Umusesenguzi umwe muri laboratoire ntangarugero 7 ingero zingana kurwego rumwe, hamwe no gutandukana bisanzwe (RSD) ibisubizo byabonetse bikoreshwa mukugaragaza neza;RSD≤5% yujuje ibisabwa.