Sublimed D-,L-,and DL-leucine under vacuum were subjected to ^(60)Co γ-irradiation with different doses.The enantiomeric compositions of samples were determined by chirasil- val capillary column gas chromatography,an...Sublimed D-,L-,and DL-leucine under vacuum were subjected to ^(60)Co γ-irradiation with different doses.The enantiomeric compositions of samples were determined by chirasil- val capillary column gas chromatography,and the relative yields of radiolytic products(H_2, CO_2 and NH_3)were measured by packed column gas chromatography.The obtained data showed the peak area ratios D/L of DL-leucine after different absorbed doses of irradiation are all the same as that of samples with no irradiation,within the limit of error.So are the ratios for the separately irradiated D-and L-leuicne.This suggests that no asymmetric decom- position was found.The relative yields D/L of radiolytic products(H_2,CO_2 and NH_3)are very close to 1.00,indicating that the D-leucine cleavage rate was the same with that of the L-leucine.From the view of dissipative structure,an explanation for the result was presented.展开更多
文摘Sublimed D-,L-,and DL-leucine under vacuum were subjected to ^(60)Co γ-irradiation with different doses.The enantiomeric compositions of samples were determined by chirasil- val capillary column gas chromatography,and the relative yields of radiolytic products(H_2, CO_2 and NH_3)were measured by packed column gas chromatography.The obtained data showed the peak area ratios D/L of DL-leucine after different absorbed doses of irradiation are all the same as that of samples with no irradiation,within the limit of error.So are the ratios for the separately irradiated D-and L-leuicne.This suggests that no asymmetric decom- position was found.The relative yields D/L of radiolytic products(H_2,CO_2 and NH_3)are very close to 1.00,indicating that the D-leucine cleavage rate was the same with that of the L-leucine.From the view of dissipative structure,an explanation for the result was presented.
