Determination of mercury in apples by spark source mass spectrometry

Direct determination of heavy elements in biological media by spark source mass spectrometry

“…The use of SSMS in analysis of biological samples is not a new subject (5)(6)(7)(8)(9)(10)(11). Evans and Morrison (9) have evaluated the applicability of SSMS for the quantitative determination of trace elements in biological materials, but their study did not emphasize the heavy element region or a direct sampling procedure.…”

Determination of fluorine and bromine in halogenated herbicide residues in soil by spark-source mass spectrometry

“…After complete drying, the graphite containing essential, as it seemed to stabilize the herbicide on the gold the sample was transferred, using a tantalum spatula, to a small polyethylene vial and thoroughly mixed with a Wig-L-Bug to ensure even distribution of the sample. The graphite was then pressed into the tips of two graphite electrodes as described previously (7). The two electrodes were then mounted in the source of a Model MS-7 (Associated Electrical Industries) mass spectrometer and sparked tip-to-tip against one another.…”