Report of the International Commission on Atomic Weights^*(1961)

Atomic weights of the elements 2005 (IUPAC Technical Report)

“…Zhao et al [14] included measurements of seven different samples from China, the United States, and Japan in their study and found no evidence for measurable variations. The previous value, A r (Nd) = 144.24(3), was based on the average of isotope amount measurements of Inghram et al [15] and Walker and Thode [16] arriving at a value of 144.24 that was adopted in 1961 [17] and an evaluated uncertainty was included in 1969 [18]. Historical values of A r (Nd) include [6]: 1894, 140.…”

Absolute isotopic abundance ratios and atomic weight of magnesium

“…For simplicity of calculation, the average of the two weighings was converted to milli· moles (mM) of magnesium using the 1964 atomic weights [19] for sulfur and oxygen and a calculated atomic weight for the isotopic magnesium based on the ORNL analyses. The results of these determinations are shown in table 2.…”

The heats of combustion of polytetrafluoroethylene (teflon) and graphite in elemental fluorine

“…Atomic weights were taken from the 1961 table of atomic weights based on carbon-12 and adopted by the International Union of Pure and Applied Chemistry [33]. The unit of energy is the joule, and one calorie was taken as 4.1840 J.…”