I-QuEChERS (NgokuKhawuleza, eLula, ayibizi kakhulu, iSebenza, iRugged kwaye iKhusekile) kumazwe ngamazwe kwiminyaka yakutshanje iphuhlise uhlobo lwesampulu ekhawulezayo yokulungiselela ubuchule bokubhaqwa kwemveliso yezolimo. Yaqala ukuphuhliswa ngu-M Anastassisdes wesebe lezolimo lase-United States (2003), kwaye emva kokuqinisekiswa okubanzi kunye nokuphuculwa, indlela ye-QuEChERS yabekwa phambili ngokusemthethweni. Iindlela zokulungiselela ze-QuEChERS ze-SPE pesticide residues upgrade version, iyafana ne-SPE yokucoca isiphumo, kodwa inyathelo lokucubungula lifutshane ngakumbi, lineempawu zokulondoloza ixesha, ukusebenza okuphezulu, uqoqosho kunye nokwamkelwa ngokuthe ngcembe luhlalutyo jikelele lwabasebenzi. Ukusebenzisa ikiti ye-QuEChERS, kuphela amanyathelo alula ambalwa afunekayo ukugqiba ukulungiswa kwesampulu yohlalutyo lweentlobo ezininzi kunye ne-residue ye-pesticide.

I-BM - Q imveliso yochungechunge iyona nyathelo ilungileyo le-Shenzhen BM Life Science esekelwe kuphuhliso lweemveliso ze-QuEChERS ezikhawulezayo, uchungechunge lwesampulu lunokusetyenziswa ekuboneni ama-residu e-pesticide, ukufunyanwa kwentsalela yezilwanyana zezilwanyana, izongezo zokutya, ukufumanisa kunye nezinye iinkalo. Olu hlobo lwemveliso lunokusetyenziswa ezininzi, ezininzi iintlobo ezahlukeneyo ze-adsorbent, ezifana ne-BM - GCB depigmentation, BM - PSA ukususa iprotheni kunye ne-organic acids, i-BM - NH2 ukususwa kwe-asidi ye-organic, i-BM - i-WCX ihlambulule izinto ze-alkaline, i-BM - C18 susa amanqatha kunye nezinye izinto eziphilayo, i-alumina isusa amanqatha, i-anhydrous magnesium sulfate yokususwa komswakama.Ukongezelela, ngokudibanisa ezinye iityuwa ze-buffer, inokunceda ukukhupha ngcono iziyobisi.Iindlela ezahlukeneyo zokuhlanganisana zingamkelwa ukuze zilungelelanise iimfuno ezahlukeneyo zonyango. .

Iimpawu zothotho lweBM-Q:
★Izinga eliphezulu lokuchacha kwamachiza:isantya esanelisayo sokuchacha kuninzi lwezitshabalalisi ezikwincam ephezulu.
★Uluhlu olubanzi lwezicelo:uhlalutyo lweesampulu ezahlukeneyo.
★Ubulula benkqubo:indlela ilula, amanyathelo okusebenza amancinci, kwaye umphumo wezinto zabantu malunga nokuchaneka kwendlela ungancitshiswa, ngelixa ukusebenza kwebhubhoratri kunokuphuculwa kunye nokuhamba kwebhubhoratri kunokuphuculwa.
★Iziphumo zithembekile:izinto ezisisiseko ezisisiseko zivela kumboneleli ofanayo, kwaye ukuhambelana kunye nokuzinza kokujoliswe kuko kunokwethenjelwa ngakumbi.
★Ukhuseleko lokusingqongileyo lwemveliso:ukusetyenziswa kwe-solvent kuncinci, ukukhuseleka kokusingqongileyo okucocekileyo, emva kokufaka i-solvent, kunokutywina isitya ngokukhawuleza, ukunciphisa umonakalo kumqhubi.

Inkcazo yenkqubo:

Isampulu yokuqhubela phambili:

Ukuqinisekisa ukufana kwesampulu.Ngaphambi kokusetyenziswa, iisampulu eziqinileyo ezifana neziqhamo kunye nemifuno kufuneka zinqunyulwe kwaye zifakwe kwi-homogenated, kwaye isampuli yemifuno kunye neziqhamo zidla ngokuba yi-10-15g, kunye ne-homogenation yomatshini we-high speed tissue homogenation (RPM 11000). r/min-24000 r/min).

Inyathelo 1: isampulu yotsalo:

Umlinganiselo olinganisiweyo wesampulu ephukileyo kwi-tube ye-BM-Q yokukhupha, yongeza i-solvents efanelekileyo yezinto eziphilayo kwi-tube ye-BM-Q yokukhupha, kunye ne-homogenizing okanye i-ultrasonic extraction isetyenziselwa ukuhlambulula i-liquid.

Inyathelo lesi-2: ukuhlanjululwa

Ngokutsho kwesampulu, khetha umbhobho wokucoca we-BM-Q ofanelekileyo, uze udibanise isicatshulwa kwi-tube yokucoca, ugubungele kakuhle kwaye udibanise kakuhle, kwaye i-centrifuge i-concentration ye-liquid concentration okanye isampuli ngqo. qhubeka nokucoca ulwelo lokucoca ukufezekisa umphumo ofanelekileyo wokucoca.

Amanqaku:

Xa iisampulu ijoyina umgca wokucoca, i-anhydrous magnesium sulfate inokuba nomkhuhlane kunye nesehlo segesi, Iingcebiso ze-vibration wave emva kwexesha elithile emva kokuvula ityhubhu ye-centrifuge ekhutshwe kwi-vibration wave kunye neminye imisebenzi.

Xa amanzi aqulethe umthamo omkhulu wamanzi ongezwa kumbhobho wokucoca oqukethe i-magnesium sulfate, nceda ungeze i-solvent ngaphambi kokuba ungeze isampuli ukukhusela umphumo we-caking yesampuli kunye ne-magnesium sulfate.

Nceda uqaphele ukutywinwa kwemveliso.Xa imveliso ikhutshwe, inokutywinwa kwisikhwama esitywiniweyo okanye igcinwe kwindawo eyomileyo okanye enomoya.

Iingxaki ezikhoyo kwindlela yoqobo ye-QuEChERS:

Kumbindi weasidi (orenji), umlinganiselo we-alkaline wokubuyisela isitshabalalisi siphantsi; Nakwi-matrix engathathi hlangothi, izibulali-zinambuzane ezibuthathaka zealkali ziyonakaliswa.

Izisombululo:

Kwinkqubo yokuhlalutya i-acidic medium (i-orange) ukujoyina i-extract HAC kunye ne-NaAc umxube, inokugcina inkqubo yesisombululo se-pH phakathi kwe-4 ukuya kwi-5, ukwenzela ukuba ukusombulula ingxaki yokubuyiswa kwe-alkaline pesticide kuchaphazelekayo.

BM-QUEChERS Ulwazi lweodolo
     Indlela yokulungiselela isampula, ecetywayo ngu-Anastassiades ngo-2003, isetyenziswe ngokubanzi ekufumaneni ukutya, iisampulu zamanzi ezisingqongileyo kunye nokungcola komhlaba.Imveliso yenkampani yethu iyasebenza kwisebe lezolimo laseTshayina, i-NY / T, i-AOAC kunye ne-eu EN.

Olu luhlu lweemveliso lunokuqonda ngokupheleleyo ukuhanjiswa okuzenzekelayo, ukulayishwa kunye nokupakishwa komgubo, ukuqonda i-automation, isikali kunye nemveliso yobuninzi, kunye nokwamkela ukwenziwa ngokwezifiso.

Wamkelekile abathengi abatsha nabadala ukuba babuze, baxoxe ngentsebenziswano kwaye bafune uphuhliso olufanayo!