Critical Evaluation of an Isotope Dilution ICP-MS Method for the Measurement of the Fe Content in Seawater
For iron, an ID-ICP MS method was proposed based on a co-precipitation with magnesium hydroxide. To be able to measure the iron content in the low pg g-1 range a correct assessment of the analytical procedural blank is of crucial importance. The present study considers different approaches we developed to assess, in a realistic way, the procedural blank of the method. The published protocol minimizes sample-tube contact, and labware contribution to the blank, and can easily lead to non-realistic procedural blank values. Instead, our investigations aimed at reproducing the full set of experimental steps. Our results are evaluated in thelight of the published.
PETROV Ivan;
QUETEL Christophe;
TAYLOR Philip;
2006-11-09
International Atomic Energy Agency (IAEA)
JRC34123
https://publications.jrc.ec.europa.eu/repository/handle/JRC34123,
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