The atomic weight of samarium was redetermined as A(r)(Sm) = 150. 3661(2). Application of substitute calibration using the true isotopic ratio of Eu-151/153 results in A(r)(Sm) = 150. 3740(10). A summary is given incl...The atomic weight of samarium was redetermined as A(r)(Sm) = 150. 3661(2). Application of substitute calibration using the true isotopic ratio of Eu-151/153 results in A(r)(Sm) = 150. 3740(10). A summary is given including the results for other five rare earth elements.展开更多
The atomic weight of germanium was determined as A(r)(Ge) = 72.6284(22). Application of substitute calibration using the true isotopic ratio of Ga-69/71 results in A(r)(Ge) = 72.6389(29), both on 2 sigma basis.
The infrared spectra of (Li2CO3)-Li-6, (Li2CO3)-Li-7, (Li2SO4)-Li-6, and (Li2SO4)-Li-7 were studied. The isotopic shift of the vibrational frequency for Li-6 - O and Li-7 - O bonds amounts to 4.5-7.8 % for the carbona...The infrared spectra of (Li2CO3)-Li-6, (Li2CO3)-Li-7, (Li2SO4)-Li-6, and (Li2SO4)-Li-7 were studied. The isotopic shift of the vibrational frequency for Li-6 - O and Li-7 - O bonds amounts to 4.5-7.8 % for the carbonate and 9.5-11.6% for the sulfate.展开更多
Isotopic ratio measurement was made for gadolinium, utilizing the bias correction facor df cerium and europium for the same mass spectrometer. The atomic weight found from the raw data is A(r)(Gd)=157.2473(2). However...Isotopic ratio measurement was made for gadolinium, utilizing the bias correction facor df cerium and europium for the same mass spectrometer. The atomic weight found from the raw data is A(r)(Gd)=157.2473(2). However, the application of the method of doable substitute calibration results in A(r)(Gd) = 157.2526(10), both on 2 sigma basis. For dysprosium and erbium the same method yields A(r)(Dy)=162.4993(10) and A(r)(Er)=167.2611(12).展开更多
文摘The atomic weight of samarium was redetermined as A(r)(Sm) = 150. 3661(2). Application of substitute calibration using the true isotopic ratio of Eu-151/153 results in A(r)(Sm) = 150. 3740(10). A summary is given including the results for other five rare earth elements.
文摘The atomic weight of germanium was determined as A(r)(Ge) = 72.6284(22). Application of substitute calibration using the true isotopic ratio of Ga-69/71 results in A(r)(Ge) = 72.6389(29), both on 2 sigma basis.
文摘The infrared spectra of (Li2CO3)-Li-6, (Li2CO3)-Li-7, (Li2SO4)-Li-6, and (Li2SO4)-Li-7 were studied. The isotopic shift of the vibrational frequency for Li-6 - O and Li-7 - O bonds amounts to 4.5-7.8 % for the carbonate and 9.5-11.6% for the sulfate.
文摘Isotopic ratio measurement was made for gadolinium, utilizing the bias correction facor df cerium and europium for the same mass spectrometer. The atomic weight found from the raw data is A(r)(Gd)=157.2473(2). However, the application of the method of doable substitute calibration results in A(r)(Gd) = 157.2526(10), both on 2 sigma basis. For dysprosium and erbium the same method yields A(r)(Dy)=162.4993(10) and A(r)(Er)=167.2611(12).
