Table of Contents
Advertisement
Mercury
17.
Turn off, or
disconnect power to the
vacuum pump when the
volume in the Distilling
Receiver reaches the
10 mL mark.
If necessary, the volume in
the Distilling Receiver
may be brought up to
10 mL with HgEx Reagent
B. To avoid low volumes
in the future, disconnect
the vacuum a little sooner
in step 6. This leaves more
HgEx Reagent B in the
packing of the Mercury
Absorber Column.
Phase 3: Colorimetric Analysis
1.
Using the funnel
provided, add the
contents of one HgEx
Reagent 3 foil pillow to
the eluate in the Distilling
Receiver. Stopper the
receiver. Invert to
dissolve the reagent.
Mercury
Page 6 of 12
18.
Remove the distilling
Receiver from the
Mercury Absorber
Column. Reconnect the
100-mL Erlenmeyer flask
to the column.
2.
Add the contents of
one HgEx Reagent 4 foil
pillow to the Distilling
Receiver using the funnel
provided. Stopper the
receiver. Invert to
dissolve the reagent.
19.
Pipet 3 mL of HgEx
Reagent B into the
Mercury Absorber
Column without
applying vacuum. This
keeps the absorber
packing wet between
tests.
The Mercury Absorber
Column eluate in the
Distilling Receiver is
ready for analysis.
Proceed to Phase 3.
3.
Add 8 drops of HgEx
Reagent 5 to the Distilling
Receiver. Stopper the
Receiver. Invert to mix.
4.
Touch the timer icon.
Touch
.
OK
A two-minute reaction
period will begin.
Mercury_PP_Other_CVM_Eng_Ody.fm
Advertisement
Table of Contents
