Hh. Chen et D. Beauchemin, Determination of copper in saline water using flow injection on line precipitation coupled with inductively coupled plasma mass spectrometry, CAN J A S S, 45(3), 2000, pp. 84-89
Citations number
25
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
CANADIAN JOURNAL OF ANALYTICAL SCIENCES AND SPECTROSCOPY
A preliminary implementation of flow injection online precipitation with in
ductively coupled plasma mass spectrometry (ICP-MS) was applied to the dete
rmination of Cu in certified estuarine water SLEW-8. A solution of 2% sodiu
m diethyldithiocarbamate in 1 M ammonium acetate (at pH 6.75) was used as p
recipitant, which was mixed on-line with samples. The precipitate was colle
cted in a knotted reactor/filter system, and subsequently dissolved using 5
0 mul of 4.32 M nitric acid (containing 10 mug/l Ga as a drift monitor) for
the delivery to ICP-MS. The Knotted reactor/filter system was heated (at a
round 70 degreesC) to enhance the precipitation and dissolution processes.
It took 209 seconds to achieve a 5-fold preconcentration with a sample volu
me of 250 mul. A result in good agreement with the certified value was obta
ined using an, external calibration (with a correction for drift of the old
ICP-MS system used).