Microtechniques for the determination of nanomolar concentrations of trace elements in ≤ 10 ml of sediment porewater

Microtechniques were incorporated with trace metal clean techniques to determine nanomolar concentrations of Ag, Cd, Co, Cu, Fe, Ni, Pb and Zn in small (2–10 ml) aliquots of sediment porewater. This involved a liquid-liquid preconcentration with organic chelators (APDC and DDDC) coupled with analyse...

Full description

Saved in:
Bibliographic Details
Published in:Analytica chimica acta 1996-07, Vol.328 (1), p.13-17
Main Authors: Rivera-Duarte, Ignacio, Flegal, A.Russell
Format: Article
Language:English
Subjects:
Analytical chemistry
Atomic absorption spectrometry
Chemistry
Exact sciences and technology
Porewater
Preconcentration
Spectrometric and optical methods
Trace elements
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Microtechniques were incorporated with trace metal clean techniques to determine nanomolar concentrations of Ag, Cd, Co, Cu, Fe, Ni, Pb and Zn in small (2–10 ml) aliquots of sediment porewater. This involved a liquid-liquid preconcentration with organic chelators (APDC and DDDC) coupled with analyses by graphite furnace atomic absorption spectrometry. The preconcentration was quantitative with recovery efficiencies between 96% and 100% and calculated extraction efficiencies between 90% and 104%. Procedural blanks were 0.95% of the Ag, 0.33% of the Cd, 0.24% of the Cu, 0.12% of the Ni, and ≤0.05% of the Co, Fe, Pb, and Zn concentrations in 10 ml aliquots of an internal reference porewater material. Therefore, these techniques are suitable for measuring ambient concentrations of trace metals in sediment porewater.
ISSN:0003-2670
1873-4324
DOI:10.1016/0003-2670(96)00111-0