Ukusetyenziswa kwe-GC-NS kuvavanyo lokhuseleko lokutya

I-chromatography-mass spectrometry (GC-MS) yindlela enamandla yohlalutyo esetyenziswe ngokubanzi kuvavanyo lokhuseleko lokutya. Indlela yokuhlanganisana ngokwahlukana negesi yegesi ye-chromatographys kunye nezakhono zohlalutyo lwe-smass moloctrometry ukwenza uhlalutyo oluchanekileyo lweematriki zokutya okuntsonkothileyo. Oku kulandelayo sisishwankathelo sokubaluleka, izicelo kunye nezibonelelo ze-GC-Nk ekuqinisekiseni ukhuseleko lokutya.

I-GC-ms ibalulekile ekuchongeni nasekuqinisekiseni ukungaziphathi kakuhle kunye neentsalela ekutyeni. Imvakalelo yayo ephezulu kunye nokukhetha amandla kunye nokukhetha amandla okwenza ilungele ngokukhethekileyo ekuhlalutyeni okuhlalutyayo, kunye neendlela eziguqukayo, kunye nezinzileyo kwimicimbi yokhuseleko lokhuseleko. Ubuchwephesha bubalulekile ekufumaneni izinto eziyingozi ezinjengeyeza lokufaka izitshabalalisi, izinyithi ezinzima, kunye nezinye izinto ezinokubakho umngcipheko kwimpilo yabathengi.

Ngolwazi oluthe kratya malunga ne-vials ye-autosampler ye-chromatography, ibhekisa kweli nqaku: I-2ml automampler vials ye-chromatography yegesi

Ukusetyenziswa kwe-GC-ms kukhuseleko lokutya

I-1. Uhlalutyo lwentsalela ye-pesticide Ngezinto ezixhalabisayo malunga nezipikli zeyeza kwimpilo yabantu kunye nokusingqongileyo, iiarhente ezilawulayo zifuna uvavanyo olungqongqo ukuqinisekisa ukuba ukutya kuhlangatyezwane nemigangatho yokhuseleko. I-GC-Nks iyakwazi ukubona iintsalela ezininzi zentsalela ngaxeshanye, zisenza ukhetho olusebenzayo lweelebhu zenza uhlalutyo olubanzi.

2. Ukufunyanwa okungcolisekileyo: I-GC-Nks isetyenziselwa ukuhlalutya iintlobo ezahlukeneyo zokutya, kubandakanya i-mycotoxins, iikhemikhali zeshishini, kunye nokungcoliseka kwendalo. Indlela yobuchule iyakwazi ukwahlula umxube onobunzima, ke ukulandela umkhondo wezinto ezingcolisekileyo ezinokuthi zingabonwe zinokufunyanwa. Obo buchule bubalulekile ekuqinisekiseni ukuba iimveliso zokutya zingenazinqwaba eziyingozi kunye nokukhusela impilo yoluntu.

I-3. I-flavour kunye nohlalutyo lwe-aroma: Ukongeza kuvavanyo loKhuseleko, i-GC-MS ikwasetyenziselwa incasa kunye nohlalutyo lokutya. Ngokuhlalutya izihloko eziguqukayo ezinoxanduva lokunambitha kunye ne-odor, abavelisi banokuphucula umgangatho wemveliso kunye nomthengi wabathengi. Esi sicelo sibalaselisa ukungahambi kakuhle kwe-GC-NS, engaphelelanga kwimicimbi yokhuseleko.

4. Uhlalutyo lwesondlo: I-GC-MS inokusetyenziselwa ukuhlalutya umxholo wesondlo sokutya, njengamafutha acids kunye neevithamini. Esi sicelo sibaluleke ngokukhethekileyo ekuqinisekiseni amabango esondlo abavelisi. Iilebheli ezichanekileyo zesondlo zinceda abathengi benze ukhetho lokutya olunolwazi.

5. Ulawulo olusemgangathweni: Ukongeza ekuboneni ungcoliseko, i-GC-MS idlala indima ebalulekileyo kwinkqubo yokulawula imigangatho kwishishini lokutya. Ngokuqinisekisa ukungqinelana kwiiprofayili ze-flavound kunye nokuqulunqwa kwezithako, abavelisi banokugcina imigangatho ephezulu kwiimveliso zabo.

IZIBONELELO ZOKUSETYENZISWA KWE-GC-NMS ukuze kuvavanywe

Ubuntununtunu obuphezulu kunye nokukhetha: I-GC-MS inokubona i-quages ​​ngeendlela eziphantsi kakhulu (iinxalenye nganye), zenza ilungele ukuhlalutya ukuhlalutya.

Uhlalutyo olubanzi

Ukusetyenziswa koncedo: I-GC-MS inokuhlalutya ngeentlobo zeendlela ezahlukeneyo zokutya, kubandakanya iinyibiliki, ulwelo kunye neegesi.

Iziphumo

Ufuna ukwazi ngakumbi malunga nomahluko phakathi kwe-LC-Nks kunye ne-GC-Nks, nceda ujonge eli nqaku:Nguwuphi umahluko phakathi kwe-LC-Nks kunye ne-GC-Nks?

Amanyathelo okhuseleko kwi-GC-ms kwi-Det yokutya

Ukwenzela ukuba kuphuculwe ngokufanelekileyo ukuchaneka kwe-GC-MS ye-GC-MNS yeZithako zokutya, uhlalutyo lwenziwa ngokweyona meko yesicelo.

Okokuqala, uqonde ngokupheleleyo iimpawu zeesampulu zokutya ekufuneka zivavanywe, kwaye ngokwesayensi kunye nokuzikhetha indlela ye-GC-MS. Kwangelo xesha, yenza inkqubo yokuvavanywa ngokupheleleyo kunye nenkqubo yokusebenza, kwaye wenze umsebenzi wokulungiselela wokungena kunye nendlela ethile yokwenza isicelo se-chromatography yerhasi. Ukulawulwa ngokufanelekileyo kunye nokunciphisa izinto ezahlukeneyo ezingazinzanga kwinqanaba lokuvavanywa ukuthintela ifuthe lokufumana ukutya kwaye kuqinisekiswe ukuba ukuchaneka kwesicelo sokutya kuphuculwe.

Okwesibini, ziseta ngononophelo iiparamitha zegesi chromatography-mass spectrometry. Umzekelo: Ukuseta amaqondo obushushu kwibhokisi yekholamu, ukukhetha komthombo, ukhetho lwekholam yeChromatographic, njl. Njl. Yenza indalo iyonke yokuhlolwa kokutya ukuqinisekisa ukusebenza kunye nesayensi yokhetho lwesixhobo. Ngaphambi kokuba abasebenzi bovavanyo asebenzisa isixhobo se-GC-MS, kuya kufuneka bajonge ukuchaneka kwezixhobo kwakhona. Thelekisa iimvavanyo zovavanyo kwaye uzihlalutye ukuqinisekisa ukuba uvavanyo lokutya luhlangabezana neemfuno ze-chromatography-mass protrametry yetekhnoloji.

I-GC-Nks iye yaba liteknoloji yengqolowa yovavanyo lokutya lokutya kunye nemvakalelo yayo engafakwanga inyani, yokuqonda isiseko-nkqubela, kunye nokukwazi ukwenza uhlalutyo olubanzi lweentlobo ngeentlobo zeentlobo ezahlukeneyo zobulungisa. Ngokuphuhliswa okuqhubekayo kweemfuno ezilawulayo kunye nokulindelwa kwabathengi kukutya okukhuselekileyo, indima ye-GC-Nk kwishishini inokwanda ngakumbi. Ngokamkela le teknoloji yohlalutyo lohlalutyo, iilabhoratri zinganceda ekuqinisekiseni ukuba ukutya kukhuselekile ukutya ngelixa kugcinwa imigangatho esemgangathweni.