Cov txiaj ntsig RF yog dab tsi?
Cov txiaj ntsig RF yog dab tsi?

Video: Cov txiaj ntsig RF yog dab tsi?

Video: Cov txiaj ntsig RF yog dab tsi?
Video: Tuag lod tseem hlub. Ep77 2024, Kaum ib hlis
Anonim

Tus nqi RF (hauv chromatography) Qhov kev ncua deb mus los ntawm ib qho khoom muab faib los ntawm qhov kev ncua deb mus los ntawm qhov hnyav pem hauv ntej. Rau ib tug muab system ntawm ib tug paub qhov kub thiab txias, nws yog ib tug yam ntxwv ntawm cov khoom thiab yuav siv tau los txheeb xyuas cov khoom.

Raws li txoj cai, tus nqi RF qhia koj li cas?

Cov Rf nqi qhia tias cov xim tshwj xeeb yog soluble hauv cov kuab tshuaj npaum li cas los ntawm qhov siab npaum li cas cov xim txav ntawm daim ntawv. Ob pigments nrog tib yam Rf nqi tej zaum yuav zoo tib yam molecules. Me me Rf nqi yuav qhia tau tias loj dua, tsawg soluble pigments thaum lub siab soluble pigments muaj ib Rf nqi nyob ze ib.

Tom qab ntawd, lo lus nug yog, dab tsi yog RF qhov tseem ceeb ntawm cov xim? Rf = (qhov deb txav los ntawm cov xim) / (nruab nrab txav los ntawm hnyav)

  • Rf rau carotene = 9.7cm / 9.8cm = 0.99.
  • Rf rau xanthophylls = 7.2cm / 9.8cm = 0.73.
  • Rf rau chlorophyll a = 5.1cm / 9.8cm = 0.52.
  • Rf rau chlorophyll b = 3.7cm / 9.8cm = 0.38.

Ib yam li ib tug yuav nug, tus nqi RF siab txhais li cas?

Txhais . Rf = nrug deb taug kev los ntawm cov khoom / deb mus los ntawm hnyav pem hauv ntej. A heev rf (Piv txwv li 0.92) yuav xa mus rau ib yam khoom uas tsis yog-polar. Piv txwv li, cov khoom no tau txav mus rau 92% ntawm tag nrho cov kev ncua deb ntawm cov kuab tshuaj mus. Ib qho qis Rf nqi (0.10) yuav xa mus rau ib yam khoom uas muaj polar heev.

Dab tsi yog tus nqi Rf sawv rau hauv chromatography?

retardation factor

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