简介:Hydride generation techniques are used routinely for
the determination of As, Se, and Sb in environmental
samples. Advantages include high sensitivity, simplicity
and relative freedom from interferences. The current
简介:Hydride generation techniques are used routinely for
the determination of As, Se, and Sb in environmental
samples. Advantages include high sensitivity, simplicity
and relative freedom from interferences. The current
method for the hydride generation determination of As
and Se, as outlined in the USEPA manual SW-846,
utilizes zinc slurry methodology. A batch type method is
described. Batch type hydride generators are inherently
slow and prone to interferences. These problems can
be overcome with continuous flow systems which are
faster, simpler to use and more reliable. Also, interferences
are more easily managed.详细>