Specifications
Test Name:
Low Level Mercury
Test Code:
1631E
Test Number:
E1631E
Matrix:
Aqueous
Units:
ng/L (ppt)
Summary
Mercury in a sample is oxidized using BrCl. Oxidized mercury in the sample is then reduced to volatile elemental mercury using SnCl2. Elemental mercury is purged with nitrogen and collected on a gold sand trap.
After sufficient mercury has been collected, the trap is heated and desorbed mercury is purged into a cold-vapor atomic fluorescence spectrometer (CVAFS) for quantitation.
Typical Method Detection/Reporting Limits
Type
A
Analyte
Mercury
MDL
0.588
PQL
5