a) Lub wavelength ntau yam uas nthuav tawm qhov nqus tau zoo tshaj plaws yog 600-670 nm, uas sib haum rau cov xim txiv kab ntxwv thiab liab me ntsis.
Dab tsi wavelength absorbs lub teeb tshaj plaws?
Plant pigment molecules nqus lub teeb nyob rau hauv lub wavelength ntau ntawm 700 nm txog 400 nm; Cov kab no yog hu ua photosynthetically-active radiation. Violet thiab xiav muaj qhov luv tshaj wavelengths thiab lub zog tshaj plaws, whereas red muaj qhov ntev tshaj plaws wavelengths thiab nqa lub zog tsawg tshaj plaws.
Dab tsi muaj xim muaj qhov nqus tau siab tshaj?
Liab yog lub teeb pom kev qis tshaj plaws thiab violet yog qhov siab tshaj. Ib yam khoom muaj xim nyob ntawm lub teeb nws pom. Yog hais tias nws absorbs lub teeb nyob rau hauv lub liab thiab daj cheeb tsam ntawm lub spectrum, nws yuav muaj ib tug xiav xim. Nov yog piv txwv.
Puas yog lub wavelength siab dua txhais tau tias nqus tau ntau dua?
Ib qho tseem ceeb xav txog yog lub wavelength ntawm hluav taws xob siv rau kev ntsuas. Nco ntsoov tias ntau dua qhov molar absorptivity, qhov siab dua qhov absorbance.
Vim li cas lub wavelength ntawm lub teeb teeb ntawm qhov siab tshaj plaws absorbance?
Rau kev tshuaj ntsuam spectrophotometric, peb ib txwm xaiv lub wavelength ntawm qhov siab tshaj plaws absorbance rau ob lub laj thawj: (1) Qhov rhiab heev ntawm kev tsom xam yog qhov zoo tshaj plaws ntawm qhov siab tshaj plaws absorbance; uas yog, peb tau txais cov lus teb siab tshaj plaws rau qhov muab cov concentration ntawm cov tshuaj ntsuam xyuas.
