Comparison of results of the determination of lead isotope ratios in wine samples (Table 4). (a) 208Pb:
206
Pb; (b)
206
Pb:
207
Pb
ratio; and (c)
206
Pb:
204
Pb ratio. Each of the figures a, b, c contains three graphs showing the correlation obtained with the different
mass analysers. Dashed line:yxcurve. Solid line: least square approximation.