I-Chromatography iyindlela yokuhlaziya isetshenziswa kabanzi izimboni eziningi, njengemithi, ukuhlaziya imvelo kanye nokukhiqizwa kwesiphuzo. I-Chromatography ivumela ososayensi futhi abacwaningi ukuba bahlukanise, bakhombe bese banciphise izingxenye ezihlukile ngaphakathi kwezingxube ukuthola ukuqonda okubalulekile kwezakhi zesampula eziyinkimbinkimbi. Isici esisodwa esibalulekile se-chromatography sibandakanya ukulungiswa kwesampula - umsebenzi odlalwe ngeama-headspace vials.

Ukuqonda i-chromatography kanye nokuhlaziywa kwesampula:

I-Chromatography isebenza ngomgomo wokufuduka okuhlukile kwamakhompiyutha ngezigaba zeselula (ezinjenge-liquid noma igesi) ngamanani ahlukile ngezigaba ezijwayelekile (ezingafaka izinto eziqinile noma eziwuketshezi). Lokhu kuvumela amasampula ahlukaniswe njengoba izingxenye zawo zidlula ngamanani ahlukahlukene ngezigaba ezijwayelekile njenge-chromatography ye-chromatography (GC) kanye nezinzuzo zokuhlaziywa kwesampula zazo.

Ukubaluleka kokulungiswa kwesampula:

Ngaphambi kokuthi ihlaziywe kusetshenziswa i-Chromatography, amasampula kufanele alungiselele amasampula afanele ukuze aqinisekise imiphumela efanele nethembekile. I-PREP ifaka izinyathelo ezinjengokukhishwa, i-filtration, i-dilution kanye nokusulwa phansi njengoba kudingeka ngokuya ngemvelo yazo ye-matrix kanye nokuhlaziywa okufisayo.

Amasu wokulungiselela isampula yendabuko kungenzeka anele lapho ephatha amakhompiyutha aguqukayo noma aguquguqukayo; Yilapho ukuhlaziya kwe-Headespace kuza usizo.

Ukuhlaziywa kwe-HeadSpace nezinhloko ze-Headspace:

Ukuhlaziywa kwe-HeadSpace kungenye indlela yokuhlola amakhompiyutha aguqukayo kanye nama-semivolatile akhona kwisampula ngaphandle kokujova ngokuqondile ku-chromatograph, esebenzisa isigaba sayo se-vapor ngenhla esitsheni esivaliwe. Kuyasiza ikakhulukazi lapho ubhekene nezinhlanganisela ezingabola, usabele, noma ube nzima ukuhlukanisa amasu wokujova okujwayelekile.

Ama-headspace vialsziyiziqukathi eziklanywe ngokukhethekile ukubamba amasampula awuketshezi kanye nesigaba se-vapor ngaphezulu kwayo. Ifakwe nge-Septum kanye ne-cap ukuvala ngokuqinile amakhompiyutha aguqukayo abaleke, ama-vials afudumele abangela ukuthi la ma-volula avele angene ekhanda (isikhala esingenalutho ngaphezulu kwe-liquid) lapho aqongelela khona. Inaliti yesirinji ingabe isibhoboza le septum yokufaka okuqukethwe kwayo ngqo ku-chromatograph ukuze ihlaziywe.

Izinzuzo ezi-5 zama-headpace vials ku-chromatography:

Ukugcina Ubuqotho Besampula:Ubuchwepheshe be-HeadSpace buvimbela umjovo oqondile wamasampula ayinkimbinkimbi noma angasebenza, ukugcina ubuqotho besampula ngenkathi ugwema ukungcoliswa kwekholomu.

Ukuzwela:Ngenxa yokuhlushwa kwabo okuphezulu kwi-Headspace kunesigaba se-liquid, amakhompiyutha aguqukayo athambekele ekuboneni okuningi kokutholwa lapho ekhona ezindaweni ezinamakhanda.

Ukunemba Okuningi:Ukuhlaziywa kwe-HeadSpace kunikeza inani elinembile lamakhompiyutha aguqukayo ngezingqinamba zokuhlanza ezihambisana nokujova izakhi ze-matrix ezingezona ezesampula.

Kunciphise imiphumela ye-matrix:Amakhompiyutha aguqukayo angasuswa ku-matrix yawo eyinkimbinkimbi ukuze anciphise ukuphazamiseka kanye nemiphumela kaMatrix ekuhlaziyeni kwe-chromatomagraphic.

Isicelo ebanzi:Ama-headspace vials asetshenziswa kakhulu ezimbonini ezihlukene, ekuhlaziyweni kwamakhompiyutha aguqukayo kumasampula wezemvelo azothola ukuvela kwezinhlanzi ezisele emithi yezemithi kanye nokuhlaziywa kwephunga, phakathi kokunye ukusetshenziswa.

Ama-headspace vialsyimpahla ebaluleke kakhulu kwi-Chromatography, ikakhulukazi yokuhlaziya amakhompiyutha aguqukayo kanye nama-semivolatile kumasampula ayinkimbinkimbi. Ngokusebenzisa ama-headpace vials ocwaningweni lwabo, abacwaningi bangaqinisekisa ukunemba, ukuzwela, kanye nokwethembeka ekuhlaziyweni kwabo; ukuhlinzeka ngokuqonda okuthe xaxa kusampula yesampula kuyo yonke imboni.

Izinselelo ezi-4 nokucatshangelwa kokuhlaziywa kwekhanda:

Yize ukuhlaziya kwekhanda kunikeza izinzuzo eziningi, abacwaningi kumele babhekane nezinselelo ezithile kanye nokucatshangelwa lapho beqhuba le ndlela yokuhlaziywa:

Ukulingana:Ukusungula ukulingana phakathi kwesigaba se-vapor kanye nesampula kungaba nzima futhi kulimaze ukunemba kwemiphumela, ngaleyo ndlela kudingekile abacwaningi ukuthola isikhathi esihle sokulingana ngohlobo ngalunye lwesampula.

Isampula Matrix:Imiphumela ye-matrix kumele icatshangwe lapho kwenza ubungako obunembile. Imiphumela ye-matrix ingaba nomthelela omubi ekutheni ikhishwe kanjani amakhompiyutha aguqukayo futhi ahlukaniswe phakathi kwezigaba zoketshezi nezithombi ze-vapor. Ngakho-ke kufanele bahlolwe ngokucophelela ukuze banciphise futhi baqinisekise ukucaciswa okuqondile.

Ukukhetha kwe-Vial:Lapho ukhetha ama-vials afanelekile e-HeadSpace ukuze ahlaziywe, ukucatshangelwa okuningi okufana nevolumu, izinto ezibonakalayo nekhwalithi ye-septum kumele kubhekwe. Isibonelo, amasampula anezingcindezi eziphakeme ze-vapor angahle adinge amavolumu aphezulu we-vial ukuvikela ukucindezela ngokweqile kwamasampula abo.

Imvolumu wesampula:Ivolumu yesampula ebekwe emgabeni ithonya lokuqoshwa kwalo kwamakhompiyutha aguqukayo ekhanda lekhanda, okwenza ukulinganisa isampula ivolumu enokhiye wokuhlaziya okuhlaziya ukuze ufinyelele usayizi ofanele.

Ama-6 amasu namasu wokuhlaziywa kwe-headSpace:

Ukuhlaziywa kwe-HeadSpace akusona isiyalo esingaguquki; Esikhundleni salokho, ukuvela kwalo kumakwe kabusha okusha okuqhubekayo kanye nokuqala kwamasu enoveli ukufeza izinselelo ezahlukahlukene zokuhlaziya:

I-Dynamic Headpace:Amasu we-HeadSpace ashukumisayo ahlanganisa i-headspace ngegesi i-inert ukuze asuse ngokuqhubekayo amakhompiyutha aguqukayo, ngaleyo ndlela asheshise isikhathi sokulingana ukuze ahlaziye ngokushesha kanye nokukhishwa kwesampula okwengeziwe.

Isigaba sesigaba esiqinile se-micro (SPME):I-SPME yindlela yokukhipha amakhompiyutha aguqukayo futhi aguquguqukayo ngokuqondile kusuka ku-Headspace esebenzisa i-fiber ehlanganiswe nesigaba sokuma. Lokhu kuqeda isidingo sokulungiswa kwesampuli owuketshezi ngenkathi kwanda ukuzwela.

Govuza i-Bar Surptive Extraction (SBSE):I-SBSE ifaka phakathi kokulekisa ibha ye-camera ehlanganisiwe kusampula yakho ukuze ibambe amakhompiyutha aguqukayo, bese uyibuyisela emuva ekuhlaziyeni kwe-headspace devil ukuze ihlaziywe - ukuzwela okuncishisiwe ngemiphumela emincane ye-matrix.

I-HeadSpace i-chromatography yegesi emibili (HS-GCXGC):Le ndlela eyinkimbinkimbi ihlanganisa i-chromatogragraph enezici ezimbili ezinobukhulu obunezinhlangothi ezimbili ngokuhlaziywa kwe-headSpace, inika amandla ukuhlukaniswa okuhle kwamasampula amabumba abunzima. Le ndlela ibaluleke kakhulu lapho ubhekene namasampula anezibalo eziphakeme zezakhi.

I-HeadSpace SOLID-SAGET ETRAMIC Extraction (HS-SPDE):I-HS-SPDE iyindlela ehlanganisa amasu aqinile esigaba se-microd.

Amasu we-Headspace Trap:Lezi zindlela zifaka ukudonsa amakhompiyutha aguqukayo ezintweni zokwenziwa kosethu bese uzigxila ngaphambi kokuhlaziywa. Ukudonswa kwe-Cryogenic kuthuthukisa zombili izinzwa nemikhawulo yokutholwa.

Vula imininingwane futhi uthuthukise ulwazi lwakho lwe-Chromatography manje.Thola izimpendulo eziphelele kuma-FAQ aphezulu we-50 HPLC VIALS kule ndaba efundwayo: Imibuzo evame ukubuzwa kaningi ku-HPLC VIALS

Ukuhambisana nokulawulwa kwekhwalithi:

Ukuhlaziywa kwe-HeadSpace kudlala indima ebalulekile ekuqinisekiseni ukuhambisana nemithetho ebekwe izimboni zokukhiqiza ezemithi nezokudla. Ngezinhlangano ezilawulayo ezibeka amazinga aphezulu okuphepha komkhiqizo nekhwalithi, ukuhlaziywa kwe-headSpace kudlala indima ebalulekile ekuhlangabezaneni nalezo zindinganiso:

Imboni Yezemithi:Ukuhlaziywa kwe-solvents okuseleyo kubalulekile ekutholeni imihlahlandlela yemithi. Ukuhlaziywa kwe-HeadSpace kuvumela abakhiqizi ukuthi bathole ngokushesha futhi banciphise noma yiziphi izinsalela ezivela ezinqubweni zokukhiqiza ezisele ekukhiqizeni imishanguzo ehlala ingaphephile ukusetshenziswa.

Ukuphepha Kokudla nekhwalithi:Ukungcola ngamakhompiyutha aguqukayo afana nama-Vocs angahlehlisa ukuphepha kokudla kanye nekhwalithi, kepha ukuhlaziya kwe-headSpace kusiza ukubona okungcolisiwe ukuze kuqhubeke imikhiqizo engcolisiwe.

Imithetho yezemvelo:Ukuqapha umoya nekhwalithi yamanzi yizingxenye ezihlanganayo zokulondolozwa kwemvelo, ngokuhlaziywa kwe-headSpace okuhlinzeka ngemininingwane ebalulekile yezinqumo zokulawula.

Isicelo ezimbonini ezahlukene:

Ama-headspace vialsuthole ukusetshenziswa kwezimboni eziningi:

Izemithi:Ukuhlaziywa kwe-HeadSpace kubalulekile ekutholeni izixazululo ezisele ezikhona ezingubeni zezidakamizwa nasekuqinisekiseni ukuphepha kweziguli ngokuqinisekisa ukuthi ngabe ama-solvents anobungozi ahlala emazingeni amukelekayo.

Ukudla nesiphuzo:Ama-Aroma Compounds adlala indima ebalulekile ekwakheni okuhlangenwe nakho kwezinzwa esizihlanganisa nokudla neziphuzo, kanye nokuhlaziywa kwekhanda kunikeza indlela yokuhlonza nokuthola ukuthuthukiswa komkhiqizo kanye nezinhloso zokulawula ezisezingeni.

Ukuqapha imvelo: Ama-headspace vialsNikeza indlela ephumelelayo yokulinganisa amakhompiyutha ajwayelekile ezinto eziphilayo (ama-Vocs) akhona emoyeni, emanzini, kanye namasampula enhlabathi - alungele ukuhlolwa kokungcola kanye nemithetho yezemvelo.

I-Forensics: Ukuhlaziywa kwe-HeadSpace kungasiza abaphenyi be-forensic ekutholeni amakhompiyutha aguqukayo ezigcawini zobugebengu ngamanani alandelwayo. Idlala ingxenye ebalulekile yophenyo luka-Arson, ukushesha kokuhlonza kanye nokuhlaziywa kwezidakamizwa.

Ama-flavour namakha:Ukwakheka kwamafutha nokuqamba amafutha kuvame ukuba yinkimbinkimbi impela, kuvame ukuhlanganisa amakhulu ezinto eziguqukayo. Ukuhlaziywa kwe-HeadSpace kusiza abasebenza amakha kanye nakunginambitheka kangcono lezi zingxube eziyinkimbinkimbi.

Intuthuko nezinkomba ezizayo:

Intuthuko yezobuchwepheshe ilethe ushintsho lwezinguquko ku-chromatography, kufaka phakathi ukuhlaziywa kwe-headspace. Ukuthuthuka okuqhubekayo ku-vial design, ukuzwela kwamathuluzi kanye namasu wokuhlaziywa kwedatha athuthukisa ukunemba nokusebenza kahle ekuhlaziyweni kwe-headSpace; Ngaphezu kwalokho, ukuhlanganisa ikhanda eliphakeme namanye amasu we-chromatographic afana ne-mass spectrometry eselule amakhono ayo ngokwengeziwe.

Imizamo yocwaningo ifuna ukubhekana nezinselelo ezifana nesikhathi sokulingana kanye nemiphumela ye-matrix, ngenkathi kudala amaphrothokholi ajwayelekile ezinhlobo ezahlukahlukene zezinsampula nezinhlobo ezanele ezizoholela emiphumeleni ethembekile futhi engaguquki.

Isilingisi

Ama-headspace vialsbaguqule indlela amakhompiyutha aguquguqukayo ahlaziywa nge-chromatography. Ukubaluleka kwabo ekugcineni ubuqotho besampula kanye nokwenza ngcono ukuzwela akunakugcizelelwa, ngenkathi ukusetshenziswa kwazo kuqhubeka ukunwebeka ngenxa yentuthuko eqhubekayo kwezobuchwepheshe nezendlela - okunikeza ukuqonda okubalulekile kuyo yonke imboni kanye nemiyalo yesayensi ngokufanayo.

Ngcono amakhono akho okulungiselela i-Chromatography Fantral Shayina namuhla! Funda amasu wokubumba kanye nokucinga ama-headspace vials kule ndaba efundwayo:Konke mayelana nokuphamba kwe-vial: Umhlahlandlela onemininingwane ye-13mm & 20mm

Okwedlule:

Ngiyikhetha kanjani i-Septum efanele ye-HPLC ye-HPLC yami?

Olandelayo:

Ama-Vers aphansi abiza i-Chromatography Vers ye-Petrochemistry