Ikhadi Lokuhlola I-Isoprocarb Residue Detection
Mayelana
Le khithi ifanele ukutholwa kwekhwalithi ye-isoprocarb esele kusampula yekhukhamba elisha.
I-Isoprocarb iyisibulala-zinambuzane esithinta futhi sibulale, esisebenza ngokushesha, isibulala-zinambuzane esiyingozi kakhulu.Isetshenziswa kakhulu ukulawula i-rice planthopper, i-rice cicada nezinye izinambuzane erayisi, izihlahla zezithelo nezitshalo.Ubuthi bezinyosi nezinhlanzi.
Ukusebenza okuphezulu kwe-liquid chromatography-tandem mass spectrometry yasetshenziselwa ukunqunywa kwezinsalela ngenxa yokukhetha okuphezulu nokwelashwa okulula.CkuqhathaniswaI-HPLCizindlela,ikhithi yethukhombisa izinzuzo ezinkulu mayelana nokuzwela, umkhawulo wokuthola, okokusebenza kwezobuchwepheshe kanye nesidingo sesikhathi.
Amalungiselelo amasampula
(1)Ngaphambi kokuhlolwa, amasampula kufanele abuyiselwe ekamelweni lokushisa (20-30).℃).
Amasampula amasha kufanele athathwe ukuze kwesule inhlabathi futhi asikwe zibe izingcezu ezingaphansi kuka-1cm wesikwele.
(2) Kala isampula engu-1.00± 0.05g ube yithubhu ye-polystyrene centrifuge engu-15mL, bese wengeza ukukhishwa okungu-8mL, vala isivalo, ugobe phezulu naphansi ngesandla ama-30s, futhi uyiyeke ime umzuzu ongu-1.I-Supernatant liquid isampula okufanele ihlolwe.
Qaphela: Indlela yesampula ibhekise ezinyathelweni zokulawula amasampula okuphepha kokudla (i-aqsiq decree no. 15 of 2019).GB2763 2019 ukuze uthole inkomba.
Imiphumela
Okubi(-): Umugqa T kanye Nomugqa C womabili abomvu, umbala Womugqa T ujulile kunolayini C noma uyafana, okubonisa ukuthi i-isoprocarb kusampula ingaphansi kwe-LOD yekhithi.
Okuhle(+): Umugqa C ubomvu, umbala womugqa T ubuthakathaka kunomugqa C, okubonisa ukuthi i-isoprocarbl kusampula iphakeme kune-LOD yekhithi.
Akuvumelekile: Ulayini C awunawo umbala, okubonisa ukuthi imicu ayivumelekile.Kulokhu, sicela ufunde imiyalelo futhi, bese wenza kabusha isivivinyo ngomucu omusha.
Isitoreji
Londoloza amakhithi endaweni eyomile engu-2 ~ 30℃ kude nokukhanya.
Amakhithi azosebenza ezinyangeni eziyi-12.
