Usoro nledo nke ihe siri ike kwụsịtụrụ: usoro gravimetric

1. Usoro nha nke ihe siri ike kwụsịtụrụ: usoro gravimetric
2. Ụkpụrụ usoro atụ
Wepụta ihe nlele mmiri na akpụkpọ anụ 0.45μm, hapụ ya na ihe nzacha ma kpoo ya na 103-105 Celsius ka ọ bụrụ ihe siri ike mgbe nile, ma nweta ihe nkwụsịtụ nke nkwụsịtụ mgbe akpọnwụsịrị na 103-105 ° C.
3. Nkwadebe tupu nnwale
3.1, oven
3.2 Ntụle nyocha
3.3.Drier
3.4.Akpụkpọ ahụ nzacha nwere oghere nke 0.45 μm na dayameta nke 45-60 mm.
3.5, oghere iko
3.6.Mgbapu mgbapụta
3.7 Kalama na-atụ arọ nke nwere dayameta dị n'ime nke 30-50 mm
3.8, tweezers ọnụ enweghị eze
3.9, mmiri distilled ma ọ bụ mmiri nke ịdị ọcha nhata
4. Nyocha nzọụkwụ
4.1 Tinye akpụkpọ ahụ nzacha n'ime karama na-atụ ihe na tweezers na-enweghị ezé, mepee okpu karama ahụ, tinye ya n'ime oven (103-105 Celsius) ma kpoo ya maka awa 2, wee wepụ ya ma mee ka ọ dị jụụ n'ime ụlọ. desiccator, ma tụọ ya.Tinyegharịa ihicha, dị jụụ, na ịdị arọ ruo mgbe ịdị arọ (ọdịiche dị n'etiti nha abụọ ahụ abụghị ihe karịrị 0.5mg).
4.2 Kpochapụ ihe nlele mmiri ahụ mgbe ị wepụsịrị ihe siri ike kwụsịtụrụ, tụọ 100ml nke ihe atụ agwakọtara nke ọma ma jiri mmiri na-ekpocha ya.Ka mmiri niile gafee nzacha akpụkpọ ahụ.Mgbe ahụ, were 10ml mmiri a na-ekpo ọkụ saa ugboro atọ, ma gaa n'ihu nzacha mmiri iji wepụ mmiri.Ọ bụrụ na ihe nlele ahụ nwere mmanụ, jiri 10ml nke ether petroleum na-asa ihe fọdụrụ ugboro abụọ.
4.3 Mgbe ị kwụsịrị nzacha mmiri ara ehi, jiri nlezianya wepụ akpụkpọ ahụ nzacha nke jupụtara na SS ma tinye ya na karama na-atụ ihe na ịdị arọ mbụ mgbe niile, tinye ya na oven ma kpoo ya na 103-105 ° C maka awa 2, wee bugharịa ya. n'ime a desiccator, hapụ ya ka ọ dị jụụ ka ụlọ okpomọkụ, na tụọ ya , ugboro ugboro ihicha, jụrụ, na-atụ ruo mgbe arọ dị iche n'etiti abụọ nha bụ ≤ 0.4mg.nke
5. Gbakọọ:
Ihe siri ike kwụsịtụrụ (mg/L) = [(AB)× 1000× 1000]/V
N'ime usoro a: A—— akpụkpọ anụ siri ike + nzacha na ịdị arọ karama na-atụ (g)
B——Membrane na ịdị arọ karama atụ (g)
V——mkpụrụ mmiri sample
6.1 Usoro a dabara adaba na usoro a dabara adaba maka mkpebi siri ike kwụsịtụrụ na mmiri mkpofu.
6.2 nkenke (nkwughachi):
Repeatability: Otu onye nyocha na nyocha ụlọ nyocha 7 nke otu ọkwa ịta ahụhụ, yana ụkpụrụ ọkọlọtọ (RSD) nke nsonaazụ enwetara ka ejiri gosipụta nkenke;RSD≤5% na-emezu ihe achọrọ.