The Effect of Isotopic Composition on the Uncertainty of Routine Metal Mass Concentration Measurements in Ambient Air

Table 1

Agreement between the measured abundances for the isotopes used for quantifications and the expected abundance ranges.

Isotope used for quantification	Agreement with predicted range
^50V	No +0.01%
^52Cr	No, −0.1%
^56Fe	No, +0.4%
^60Ni	No, +0.3%
^63Cu	Yes
^66Zn	Yes
^111Cd	Yes
^194Pt	Yes
^200Hg	Yes
^208Pb	Yes