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An ALEXYS system is used in combination with a solid phase sample
pre-concentration step. A 1 mL sample volume is loaded onto a
pre-column by a user program in the AS 100 autosampler. For this
purpose the AS 100 has been equipped with a 10-port valve. A
secondary pump is used to supply the washing solvent.
User program for BPA analysis: A 1 mL loop is filled with sample
(red). The 10-port valve switches and pump 2 with solvent B (5% ACN,
black)
carries the sample onto the pre-column. The valve switches back and
the pump 1 with solvent A (40% ACN, blue) flushes the concentrated sample
from the pre-column onto the analytical column. The blue vial
contains washing liquid. Already during analysis, filling
of the 1 mL sample loop for the next run is started. This user program is used in
'Bisphenol A'.
- 216-005 -
Bisphenol A in drinking water
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ALEXYS Bisphenol A
The system has an AS 100 autosampler
with 10-port valve for sample enrichment.
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