Discussion on resnltJ for various Boer surfaces
with
Amines
(Fjpres
5-6).=.
1.
Undeactivated borosilicate liner
When analyzing basic compounds at low ppm levels, the liner without any
deactivation again displayed surprisingly
high
relative response factors. For
the
most demanding compounds
(diethylenetriamine
and
diethanolamine),
however, these liners predictably showed the lowest response factors and
high
o/oRSD
values. Also. this liner surface did not show significant primingwhen
comparing
RRF
and %RSDvalues from runs 2-6 vs. 1-6.
2. Intennediate polarity (IP) deactivated liner
Since
the
IP liner
has
a characteristically neutral-to-acidic
nature,
it predictably
perfotmedworst ofthe four types. Most notably
with
the diethylenetriamine
and ethanolamine. the %RSD comparison
from
runs 2-6 vs. 1-6 showed
significant priming. The %RSD of the triamine increase from 17% to 52%
when the first injection
is
factored
in.
Likewise for dietbanolamine, the %RSD
increased
from
11%
to
25%. This liner surface also had the lowest overall
response
factors
in the amines experiment
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