Implementation of spiked recovery experiments and calculation of recovery rates

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Ukuqaliswa kokuhlolwa kokutakula okuxubile nokubalwa kwamazinga okuthola kabusha

Ukuhlolwa kokutakula kuwuhlobo "lwesivivinyo sokulawula".Uma izingxenye zesampula ehlaziywe ziyinkimbinkimbi futhi zingacacile ngokuphelele, inani elaziwayo lengxenye elinganisiwe liyengezwa kusampula, bese liyalinganiswa ukuze kubhekwe ukuthi ingxenye engeziwe ingatholwa yini ngokomthamo ukuze kunqunywe ukuthi ingabe likhona iphutha elihlelekile kusampula. inqubo yokuhlaziya.Imiphumela etholiwe ivamise ukuvezwa njengephesenti, ebizwa ngokuthi “iphesenti lokutholwa”, noma “ukuthola kabusha” ngamafuphi.Ukuhlolwa kokutholwa kwe-spiked kuyindlela evamile yokuhlola ekuhlaziyeni amakhemikhali, futhi kuyithuluzi elibalulekile lokulawula ikhwalithi.Ukuthola kabusha kuyinkomba yobuningi yokunquma ukunemba kwemiphumela yokuhlaziya.

Ukutholwa okuphikisiwe isilinganiso sokuqukethwe (inani elilinganiselwe) kunani elingeziwe lapho izinga elinokuqukethwe okwaziwayo (ingxenye elinganiselwe) yengezwa kusampula engenalutho noma ingemuva elithile elinokuqukethwe okwaziwayo futhi kutholwa indlela emisiwe.

Ukutholwa kwe-spiked = (inani elilinganisiwe lesampula eliyi-spiked – inani elilinganisiwe lesampula) ÷ inani le-spiked × 100%

Uma inani elingeziwe lingu-100, inani elilinganisiwe lingu-85, umphumela yizinga lokutakula lika-85%, elaziwa ngokuthi ukutholwa kwe-spiked.

Ukuthola kabusha kuhlanganisa ukutholwa okuphelele nokutholwa okuhlobene.Ukuthola kabusha okuphelele kuhlola iphesenti lesampula elingasetshenziselwa ukuhlaziya ngemva kokucubungula.Lokhu kungenxa yokuthi kukhona ukulahlekelwa okuthile kwesampula ngemva kokucubungula.Njengendlela yokuhlaziya, ukululama okuphelele ngokuvamile kuyadingeka ukuze kube kukhulu kuno-50% ukuze kwamukeleke.Isilinganiso sento elinganisiwe eyengezwe ngokomthamo ku-matrix engenalutho, ngemva kokwelashwa, ezingeni.Izinga lihlanjululwe ngokuqondile, hhayi umkhiqizo ofanayo nokwelashwa okufanayo.Uma okufanayo, ungafaki nje i-matrix ukubhekana nayo, kungase kube nezinto eziningi ezithonya ezivikelwe yilokhu, ngakho-ke zilahlekelwe inhloso yokuqala yokuhlolwa kokululama ngokuphelele.

Kunezinhlobo ezimbili zokululama okuhlobene ngokuqondile.Eyodwa iyindlela yokuhlola yokuthola futhi enye iyindlela yokuhlola yokuphinda uthole isampula elicijile.Owokuqala uwukwengeza into elinganisiwe ku-matrix engenalutho, ijika elijwayelekile nalo liyafana, lolu hlobo lokunquma lusetshenziswa kakhulu, kodwa kukhona izinsolo zokuthi ijika elijwayelekile linqunywa ngokuphindaphindiwe.Eyesibili iwukwengeza into elinganisiwe kusampula yokugxilisa okwaziwayo ukuze iqhathaniswe nejika elijwayelekile, elibuye lingezwe ku-matrix.Ukutholwa okuhlobene kuhlolwa ngokuyinhloko ukuze kutholakale ukunemba.


Isikhathi sokuthumela: Jun-02-2022