Evaluation of Analytical Chemical Methods for Detection of Estrogens in the Environment
Sampling
Storage
Sample Preparation
Analysis/detection
Homogeneity of
sample,
Variations of
samples taken at
different times,
Problems (e.g.,
degradation,
sorption, etc.)
caused by the
sampling
equipment
Unwanted
reactions of the
analyte with the
storage container
Instability of the
analytes to
improper storage
Extraction of analyte
Removal of
interfering
substances
(cleanup)
Pre-concentration
Intrumentation should
be chosen so that the
most cost effective
analysis can be made
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