Page 66 - Modern Analytical Chemistry
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1400-CH03 9/8/99 3:51 PM Page 49
Chapter 3 The Language of Analytical Chemistry 49
Start
Standardization
Identify
No
ICV, ICB and
OK? correct
problem
Yes
No
CCV, CCB
OK?
Yes
Run 10
samples
Discard results
for last set of
samples
No
CCV, CCB
OK?
Yes
Yes More
samples?
No
End
Figure 3.7
Schematic diagram of a portion of the Contract Laboratory Program protocol for the analysis of trace metals by graphite furnace atomic
spectrophotometry, as specified by the Environmental Protection Agency. (Abbreviations: ICV = initial calibration verification; ICB = initial calibration blank,
CCV = continuing calibration verification, CCB = continuing calibration blank)
