Alumina(A/B/N)Alumina fa'atosina vaega fa'asili fa'asili/SPE koluma

Alumina o se lewis acid masani, O le alumini atom centre e leai ni electrons se lua. O loʻo i ai le malosi o le polar adsorbent, e tutusa ma le silicone, E tolu tulaga maualuga o gaioiga o le acidity, alkalinity ma le neutrality; E iai fo'i se aafiaga fa'apitoa o le alumina i leπelectrons o hydrocarbons manogi, E sili atu nai lo le silicone i tulaga maualuga o le pH. O faiga fa'atumauina o le lewis acid/base action, polarity ma le fesuiaiga o ion.

Acid aluminaLewis acid meatotino o alumina-A (pH=4.5) sa faaleleia, O lenei ituaiga o adsorbent e sili atu le faatumauina mo le mauoa electron tuufaatasiga. E le gata i lea, pe a muamua togafitiga ma vaifofo acidic, o le adsorbent e vaivai meatotino cationic, o le i luga e sili atu ona taofia mea le faaituau ma le lelei moliaga (e pei o electroneutral po acidic anions), E le mafai ona tausia se totogi lelei. e fa'afaigofie ai fo'i ona fa'atumauina le mea tau mea leaga.

Alumina faavaeO le pito i luga ole alumina-B(pH=10) e fa'amalieina e fa'atumauina a le lelei po'o le hydrogen - mea fa'apipi'i. O le oxide alumini ua togafitia i le vaifofo alkaline o lo'o i ai meatotino anionic ma galuega fesuia'i cationic. E le gata i lea, e ui lava o le pito i luga o loʻo i ai uiga o le lewis base, e mafai ona taofia mo le faʻataʻitaʻiga eletise, e pei o le amine le mautonu. O le gafatia e sili atu le maualalo mo alumina le mautonu ma acidic. E le gata i lea, e mafai ona maua le malosi o le hydrogen i luga o le alumina-b, o lea e manino ai foi le aafiaga o le polar cationic sample.

alumina fa'aletonuO le alumina-N(pH=7.5) ose fa'apipi'i malosi fo'i. I lalo o le tulaga o le maualuga o le pH, o le alumina e sili atu ona mautu nai lo le vaega o galuega e le faʻaogaina. O vaega sili ona lelei e faʻamautinoa ai le lelei o le faʻaaogaina, o le mea lea o le laʻititi laʻititi o le moega (50mg) o le oloa e masani ona faʻaaogaina. O le adsorbent e le faaituau le eletise ma e foliga mai e taofi mau mea faaeletonika e pei o amine manogi ma ga'o. I le taimi lava e tasi, o loʻo i ai foʻi le malosi e taofi ai mea faʻapipiʻi o loʻo i ai vaega eletise e pei o le okesene, phosphorous ma le sulfur atoms. Alumina-N e mafai ona faʻaaogaina mo le faʻaaogaina ma le vavaeeseina o mea polar poʻo mea e leai ni polar i faʻataʻitaʻiga e mafai ona solu vai ma e leai ni vai.

Tulaga lelei o oloa:

★ O le lelei o oloa e mautu, toe faʻaleleia lelei, uta faʻatusatusa tulaga masani (RSD) <5%.

★ E mama le afifiina ma e leai se faʻalavelave faʻalavelave faʻafuaseʻi.

★ E maualuga le maualuga o le toe faʻaleleia, ma o le toe faʻaleleia o le faʻaopoopoina o le faʻataʻitaʻiga 10 ~ 100ppm o le pito sili ona lelei o le 95% ~ 105%.

★ Faʻatinoga tau o oloa o se tasi o oloa sili ona lelei i le lalolagi.

Talosaga lautele:

★ Eleele; Suau'u; Suavai o le tino (plasma/urine etc.); Mea'ai; Vailaau ma isi.

Fa'aoga masani:

★ Suauʻu, suauʻu mata faʻapipiʻi faʻapipiʻi, mea faʻapipiʻi faʻapipiʻi.(N）

★ Sudan mumu, malachite green, vitamini, antibiotic, suauu manogi, enzymes, glycosides ma hormones, ma isi.(N）

★ Tu'ueseesega o mea fa'aalaiti, afi fa'aisotope.(A,B）

★ O le phospholipids, steroids, catecholamine.(B）

★ Mea'ai/fafaga fa'aopoopo.(A,N）

★ Pesticides, herbicides, tuueseeseina o mea filogia.(N,B）

★ E le o polar organic adsorbents, suauu ma lipid vavaeeseina

★ O mea faʻapipiʻi faʻapipiʻi e tuʻu eseese.

★ Mea fa'anatura, lanu mea'ai.

★ Japanese JPMHLW auala aloa'ia: vailaau fa'ala'alafaga i mea'ai.

★ AOAC ma auala EPA.

Tulaga lelei:

★ Matou te faʻamautinoa o oloa uma e agavaa, faʻaaogaina tulaga faʻatonutonu lelei ma faʻatino suʻesuʻega uma.

★ Faʻamautinoa o oloa uma e leai se faʻalavelave faʻafuaseʻi, ma o le faʻataʻitaʻiga toe faʻaleleia fua e sili atu nai lo le setete, e oʻo atu i le maualuga o le ituaiga o oloa tutusa.

Tautinoga tautua:

★ Matou te tuʻuina atu le lagolago faʻapitoa faʻapitoa mo le leai o se totogi.

Fa'amatalaga oka