INTENTS ACKNOWLEDGMENTS ABSTRACT
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EXECUTIVE SUMMARY
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INTRODUCTION
1
EXPERIMENTAL METHODS
5
SAMPLE COLLECTION
5
PREPARATION OF SAMPLES FOR INSTRUMENTAL ANALYSIS
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INSTRUMENTAL ANALYSES OF RADIONUCLIDE CONCENTRATIONS Detector Types
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6 8
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8
Calibration of 9-in. Nal Well Crystal for 2 ^ 6 Ra quantitation , . . , . , ,
8
Calibration of Intrinsic Germanium Detectors .
10
Selection of Counting Time Interval
10
Reporting of Uranium Analysis Data ,
11
STATISTICAL METHODS Data Handling
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Data Smoothing Functions
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12
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13
EVALUATION Of INSTRUMENTAL COUNTING CAPABILITIES
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15
MEASUREMENT OF ^ 6 R a
15
EFFECT OF COUNTING TIME
17
REPLICATE COUNTING OF SAMPLES
19 21
RESULTS AND DISCUSSION ANALYSIS OF GRAND CANYON SAMPLES
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PRESENTATION OF RIO PUERCG SAMPLE DATA
XI
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21 24
