Environmental Engineering Reference
In-Depth Information
measurements requested. Once the field analyses are performed and the data recorded on
what are termed field calibration or data sheets (Figure 10.2), this sample is usually
discarded. These data sheets must be submitted to the laboratory with the associated
samples since these results can change the analytical procedures used, as well as having
an effect on the analytical results obtained [1].
Once the sample has been received and logged into the testing laboratory, the next step
is sample preparation. In rare cases what are termed direct methods—which allow sample
analysis without prior
FIGURE 10.2 Field calibration form.
preparation—might be used. However, for the majority of samples some preparation will
 
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