Alumina(A/B/N)Alumina solid phase extraction column/kholomo ea SPE

Alumina ke acid e tloaelehileng ea lewis, Setsi sa athomo sa aluminium ha se na li-electrone tse peli.E na le adsorbent e matla ea polar, e tšoanang le ea silicone, Ho na le maemo a mararo a phahameng a ts'ebetso ea acidity, alkalinity le ho se nke lehlakore;Alumina e boetse e na le phello e khethehileng ho li-electrone tsa hydrocarbon tse nkhang hamonate, E molemo ho feta silicone e maemong a phahameng a pH.Mekhoa e ka sehloohong ea ho boloka ke lewis acid / base action, polarity le ion exchange.

Alumina ea asitiThepa ea asiti ea lewis ea alumina-A (pH = 4.5) e ile ea ntlafatsoa, ​​mofuta ona oa adsorbent o na le ts'ebetso e ntle bakeng sa metsoako e ruileng ea elektronike.Ho phaella moo, ha pretreatment le tharollo acidic, adsorbent na le fokolang cationic thepa, bokaholimo ho ka etsahala ho boloka ho se nke lehlakore le hampe qosoa dintho (tse kang electroneutral kapa asiti anions), Ha e khone ho boloka tefiso positive.The fokolang ion phapanyetsano thepa thepa. e boetse e etsa hore ho be bonolo ho boloka lisebelisoa tse mpe tsa tefiso.

Alumina ea motheoBokaholimo ba Alumina-B(pH=10) bo ratoa ho boloka lisebelisoa tse ntle kapa tsa haedrojene.Aluminium oxide e tšoaroang ka tharollo ea alkaline e na le thepa ea anionic le mosebetsi oa phapanyetsano ea cationic.Ho phaella moo, le hoja bokaholimo bo na le litšobotsi tsa lewis base, bo ka bolokoa bakeng sa sampole ea elektronike, joalo ka metsoako ea amine e sa nke lehlakore.Bokhoni bo tlase haholo bakeng sa alumina e sa nke lehlakore le acidic.Ho phaella moo, tlamo e matla ea hydrogen e ka fumanoa ho alumina-b, kahoo phello ea sampuli ea polar cationic e boetse e totobetse.

Alumina e sa nke lehlakoreAlumina-N(pH = 7.5) e boetse e na le polar adsorbent e matla.Tlas'a boemo ba pH e phahameng, alumina e tsitsitse ho feta ea sehlopha se sebetsang se sa sebetseng.Likaroloana tse ntle li netefatsa katleho e ntle ea ho ntša, kahoo bethe e nyenyane ea cylindrical (50mg) ke sehlahisoa se sebelisoang ka ho fetisisa.The adsorbent ha e nke lehlakore ka motlakase 'me e na le ho boloka metsoako e ruileng ea elektroniki joalo ka li-amine tse nkhang hamonate le tse mafura.Ka nako e ts'oanang, ho boetse ho na le bokhoni ba ho boloka metsoako e nang le lihlopha tsa electronegative tse kang liathomo tse nang le oksijene, phosphorus le sulfur.Alumina-N e ka sebelisoa bakeng sa ho ntša le ho arola lintho tse polar kapa tse seng polar ka lisampole tse qhibilihang ka metsing le tse se nang metsi.

Melemo ea sehlahisoa:

★ Boleng ba sehlahisoa bo tsitsitse, ho ikatisa hantle, ho kheloha ha maemo ho lekanyelitsoeng (RSD) <5%.

★ Pakete e hloekile 'me ha ho na tšitiso e se nang letho.

★ Sekhahla sa ho hlaphoheloa se phahame, 'me sekhahla sa ho hlaphoheloa ha ho eketsa sampole 10 ~ 100ppm ke sebaka se setle ka ho fetisisa sa 95% ~ 105%.

★ Ts'ebetso ea litšenyehelo tsa sehlahisoa ke har'a lihlahisoa tse ntle ka ho fetisisa lefatšeng.

Sebaka sa kopo:

★ Mobu;Oli;Makeli a 'mele (plasma/moroto joalo-joalo);Lijo;Lithethefatsi joalo-joalo.

Tšebeliso e tloaelehileng:

★ Petroleum, li-distillates tsa oli e tala ea maiketsetso, metsoako ea tlhaho ea maiketsetso.（N）

★ Sudan e khubelu, malachite tala, divithamini, lithibela-mafu, oli e nkhang hamonate, li-enzyme, glycosides le lihomone, joalo-joalo.（N）

★ Karohano ea metsoako ea radioactive, lijenereithara tsa isotope.（A,B）

★ The phospholipids, steroids, catecholamine.（B）

★ Lisebelisoa tsa lijo / fepa.（A,N）

★ Meriana e bolaeang likokoanyana, litlama, karohano ea lintho tse silafatsang.（N,B）

★ Non-polar organic adsorbents, oli le lipid karohano

★ Metsoako ea tlhaho ea maiketsetso e arotsoe.

★ Lihlahisoa tsa tlhaho, li-pigments tsa limela.

★ Japanese JPMHLW mokhoa oa molao: chefo e bolaeang likokoanyana lijong.

★ Mekhoa ea AOAC le EPA.

Boitlamo ba boleng:

★ Re etsa bonnete ba hore sehlahisoa se seng le se seng sea tšoaneleha, re amohela maemo a thata a taolo ea boleng le ho etsa tlhahlobo e 'ngoe le e 'ngoe ea batch.

★ Etsa bonnete ba hore sehlahisoa se seng le se seng ha se na tšitiso e se nang letho, 'me tekanyo ea ho hlaphoheloa ha sampole e phahametse ea naha, e fihla boemong bo phahameng ka ho fetisisa ba mofuta o tšoanang oa lihlahisoa.

Boitlamo ba tšebeletso:

★ Re fana ka tšehetso ea litsebi tsa setsebi mahala.

Lintlha tsa Odara