Kukho iintlobo ezininzi zokutya, ikhonkco elide lokubonelela, kunye nobunzima kulawulo lokhuseleko. Itekhnoloji yokufumanisa yindlela ebalulekileyo yokuqinisekisa ukhuseleko lokutya. Nangona kunjalo, itekhnoloji ekhoyo yokufumanisa ijongene nemingeni ekubhaqweni kokhuseleko lokutya, njengokuchaneka kakubi kwezinto eziphambili, isampula ende yexesha lonyango lwangaphambili, ukusebenza kakuhle kokutyebisa, kunye nokukhetha okuphantsi kwezinto eziphambili zokubona ezifana nemithombo ye-ion ye-spectrometry, ekhokelela kuhlalutyo lwexesha lokwenyani lweesampulu zokutya. Sijongene nemiceli mngeni, iqela lethu eliphambili leengcaphephe elikhokelwa nguZhang Feng liphumelele uthotho lwenkqubela phambili yetekhnoloji kwicala lophando lwezinto eziphambili, amacandelo aphambili, kunye neendlela ezintsha zovavanyo lokhuseleko lokutya.
Ngokubhekiselele kuphando lwezinto eziphambili kunye nophuhliso, iqela liye lahlola indlela ethile ye-adsorption yezinto zonyango zangaphambili kwizinto ezinobungozi ekutyeni, kwaye yaphuhlisa uluhlu lwezinto ezikhethekileyo ze-adsorption micro nano structure pre-treatment materials. Ukufunyaniswa kwezinto ekujoliswe kuzo kumanqanaba omkhondo/amanqanaba aphezulu kufuna unyango lwangaphambili lokutyebisa kunye nokucocwa, kodwa izinto ezikhoyo zinamandla okutyebisa okulinganiselweyo kunye nokungonelanga okucacileyo, okukhokelela ekubhaqweni kobuntununtunu obungahlangabezani neemfuno zobhaqo. Ukuqala kulwakhiwo lwemolekyuli, iqela lihlalutye indlela ethile ye-adsorption yezinto zonyango lwangaphambili kwizinto ezinobungozi ekutyeni, yazisa amaqela asebenzayo anjenge-urea, kwaye yalungiselela uthotho lwezixhobo zesakhelo se-organic covalent kunye nolawulo lwebhondi yeekhemikhali. Isetyenziselwa ukutyebisa kunye nokuhlanjululwa kwezinto ezinobungozi ezifana ne-aflatoxins, iziyobisi zezilwanyana ze-fluoroquinolone, kunye ne-phenylurea herbicides ekutyeni, ixesha lokunyanga kwangaphambili lifutshane ukusuka kwiiyure ezimbalwa ukuya kwimizuzu embalwa. Xa kuthelekiswa neendlela zomgangatho wesizwe, uvakalelo lokubona lunyuswa ngamaxesha angaphezu kwekhulu, ukutyhutyha ubunzima bobugcisa bezinto ezicacileyo ezikhokelela kwiinkqubo zonyango zangaphambili kunye nokuqonda okuphantsi, okunzima ukuhlangabezana neemfuno zokubona.
Kuphando kunye nophuhliso lwamacandelo angundoqo, iqela liya kwahlula izinto ezintsha kwaye lidibanise kunye nemithombo ye-ion ye-spectrometry ukuze kuphuhliswe kakhulu i-mass spectrometry ion source components kunye ne-real-time mass spectrometry iindlela zokufumanisa ngokukhawuleza. Okwangoku, imicu yovavanyo yegolide ye-colloidal esetyenziswa ngokuqhelekileyo ukuze ihlolwe ngokukhawuleza kwindawo incinci kwaye iyaphatheka, kodwa ukuchaneka komgangatho kunye nobungakanani bayo buphantsi. I-mass spectrometry inenzuzo yokuchaneka okuphezulu, kodwa izixhobo zininzi kwaye zifuna iisampulu ende yonyango kunye neenkqubo zokwahlula i-chromatographic, isenza kube nzima ukusetyenziselwa ukubonwa ngokukhawuleza kwisiza. Iqela liphule i-bottleneck yemithombo ye-ion ekhoyo ye-mass spectrometry ye-ion kuphela enomsebenzi we-ionization, kwaye yazisa uluhlu lweeteknoloji zokuguqulwa kwezinto zokwahlula kwimithombo ye-ion spectrometry, eyenza imithombo ye-ion ibe nomsebenzi wokuhlukana. Inokucoca iimatrices ezintsonkothileyo zesampulu ezinjengokutya ngelixa i-ionizing izinto ekujoliswe kuzo, ishenxisa ulwahlulo olunzima lwechromatographic ngaphambi kohlalutyo lobunzima bokutya, kunye nokuphuhlisa uthotho lolwahlulo lwe-ionization edityanisiweyo yemithombo ye-ion yexesha lokwenyani. Ukuba imathiriyeli eprintiweyo ephuhlisiwe yemolekyuli idityaniswe ne-conductive substrate ukuphuhlisa umthombo omtsha we-ion spectrometry (njengoko kubonisiwe kuMzobo 2), indlela yokufumanisa i-mass spectrometry yexesha lokwenyani isekwe ukuze kufunyanwe i-carbamate esters ekutyeni, kunye nesantya sobhaqo ≤ imizuzwana engama-40 kunye nomda wobungakanani bomda we-μ wendlela yobhaqo ukuya kuthi ga kwi-0 yesizwe, isantya sobhaqo siye safikelela kumlinganiselo we-μkg wesizwe. kuncitshiswe ukusuka kumashumi emizuzu ukuya kumashumi emizuzwana, kwaye ubuntununtunu buphuculwe phantse ngamaxesha angama-20, ukusombulula ingxaki yezobuchwepheshe yokungachaneki ngokwaneleyo kwi-site yokukhangela ukhuseleko lokutya.
Ngo-2023, iqela liphumelele uluhlu lwempumelelo kwitekhnoloji yokuvavanya ukhuseleko lokutya, ukuphuhlisa i-8 entsha yokucoca kunye nezixhobo zokutyebisa kunye ne-3 entsha ye-mass spectrometry ion source elements; Faka isicelo samalungelo awodwa omenzi wechiza ali-15; I-14 lamalungelo awodwa omenzi wechiza agunyazisiweyo; Kufunyenwe copyright 2 software; Kuphuhliswe imigangatho ye-9 yokhuseleko lokutya kwaye kwapapashwa amanqaku angama-21 kwiijenali zasekhaya nezangaphandle, kubandakanywa amanqaku angama-8 e-SCI Zone 1 TOP.