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  • 1
    Electronic Resource
    Electronic Resource
    Effect of sample preparation on the operational speciation of cadmium and lead in a freshwater sediment (1999)
    Springer
    Fresenius' journal of analytical chemistry 363 (1999), S. 134-136 
    Details
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The three-stage sequential extraction procedure recommended by BCR has been applied in the operational speciation of cadmium and lead in a relatively unpolluted freshwater sediment, following various types of sample pre-treatment. Changes in speciation occurred when the sediment was air-dried, oven-dried or frozen. Cadmium speciation was particularly perturbed by freezing, whilst lead was more affected by oven-drying. Metals were determined by electrothermal atomic absorption spectrometry, using direct calibration with reagent-matched standard solutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002160051159
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