Yuav ua li cas koj xam optical rotation?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Rau cov khoom siv kho qhov muag, txhais los ntawm [α]^θ_λ = α / γl, qhov twg α yog lub kaum sab xis los ntawm lub dav hlau polarized lub teeb yog tig los ntawm kev daws ntawm huab hwm coj concentration γ thiab txoj kev ntev l. Ntawm no θ yog qhov kub ntawm Celsius thiab λ lub wavelength ntawm lub teeb uas qhov ntsuas tau ua.

Ib yam li ntawd, polarimeter ntsuas qhov kev hloov kho qhov muag li cas?

Kev ntsuas txoj cai A polarmeter yog ib qho instrument uas ntsuas lub kaum sab xis ntawm kev sib hloov los ntawm kev hla lub teeb polarized los ntawm cov khoom siv optically (chiral). Rau ntsuas optical rotation , Lub Teeb Emitting Diode (LED) tsim ib lub teeb ntawm lub teeb zoo tib yam.

Ib yam li ntawd, koj txiav txim siab ua haujlwm kho qhov muag li cas? Yooj yim li ntawd. Tam sim no, yog tias nws tsis sib xws ces kos rau chiral lossis asymmetric carbon atoms (carbons txuas rau plaub pawg sib txawv). Yog hais tias nws muaj chiral carbons ces nws optically nquag. Qhov kawg thiab qhov kev ntsuam xyuas tseem ceeb tshaj plaws yog qhov molecule yuav tsum tsis yog-superimposable ntawm nws daim iav duab.

Ib yam li ntawd ib tug yuav nug, dab tsi ua rau kho qhov muag rotation?

Lub magnetic teb nyob rau hauv cov kev taw qhia ntawm lub teeb propagating los ntawm cov khoom yuav ua rau tus kev sib hloov ntawm lub dav hlau ntawm linear polarization. Cov nyhuv Faraday no yog ib qho ntawm thawj qhov kev tshawb pom ntawm kev sib raug zoo ntawm lub teeb thiab electromagnetic cuam tshuam.

Dab tsi yog units ntawm kev sib hloov tshwj xeeb?

Kev sib hloov tshwj xeeb ntawm cov khoom sib txuas yog cov yam ntxwv ntawm cov khoom sib xyaw kom ntev li ntev tau qhov kub thiab txias, qhov ntev nthwv dej ntawm teeb , thiab, yog tias siv cov tshuaj rau kev sim, cov kuab tshuaj tau teev tseg. Cov units ntawm kev sib hloov yog degreesmLg^-1ua dm^-1.