Isotope. Mass (u). Natural Abundance (%). 1H. 1.007 825 0319(6)b analysers means that calculations of exact masses need to also account for electrons in GluFib, [M+3H]3+, leads to an error of 1ppm in the exact mass calculation ( Mamer
from the two isotopic forms C130216 and C1~0160 is 3. ABUNDANCE. OF C120216. The data for the abundance determinations consist of .. After this manuscript was sent to press, Dr. W. S. BENEDICT kindly supplied the writer with tim
?f bro~ine isotopic abundances have been reported m the hteratme. Blewett . these four sets of analyses with the three described above yields a value of .. (8] T . J. Murphy, W. S. Clabaugh, and R. Gilchrist, J. Res. NBS 53, 13 (1954). 599.