Appeal No. 1997-1861
Application No. 08/412,235
of the invention can be derived from a reading of exemplary
claims
1 and 10, which are reproduced below.
1. A method for determining the amount of lead in a
liquid blood sample, which comprises the steps of:
a. applying a known volume of blood to be investigated
to a lead-free, electrically conducting substrate;
b. drying the blood so applied;
c. analyzing the blood sample to exhaustion using
resonant laser ablation, selectively producing thereby an ion
count from lead atoms present therein; and
d. integrating the ion count; whereby the integrated ion
count is a measure of the lead content.
10. A method for determining the amount of lead in a
solid blood sample, which comprises the steps of:
a. placing the blood to be investigated on a lead-free,
electrically conducting substrate;
b. analyzing a portion of the blood using resonant laser
ablation, selectively producing thereby an ion count from lead
atoms present therein;
c. simultaneously analyzing an identical size portion of
the blood sample for sodium atom content using the same mass
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