Analytical Suite Metadata

Chemex (stream sediments) AAS (Zn, Cu, Mn, Fe, Pb, Ni, Co, Ag; nitrous oxide-acetylene)

Chemex, stream sediments; atomic absorption spectroscopy (Zn, Cu, Mn, Fe; nitrous oxide-acetylene)

General Methodology:

A 1 gram sample was reacted with 3 ml concentrated HNO3 in a test-tube overnight at room temperature.  After digestion, the test-tube was immersed in a hot water bath at room temperature and brought up to 90oC and held at this temperature for 30 minutes with periodic shaking.  1 ml concentrated HCl was added and heating was continued for another 90 minutes.  The sample was then diluted to 20 ml with metal free water and mixed.  The element was determined by atomic absorption spectroscopy using an air-acetylene flame.

Background corrections were made for Pb, Ni, Co and Ag.

Instrument: unstated

Sample material: solid

Sample weight: unstated

Analytical Technique:

Hierarchical classification

Technique >> Spectroscopy >> Electromagnetic radiation >> Visible-ultraviolet >> Atomic >> Absorption >> Flame >> C2H2/Air



Analytical Decomposition:

Hierarchical classification

Decomposition >> Aqueous dissolution >> Acid >> Moderate Acid >> Aqua Regia (s.l.) >> Lefort



Analytical Methods:

IndexMethod OrderMethod IDQuantityDetection Limit
1  1001     Zn_AAS  2
2  1002     Cu_AAS  2
3  1003     Pb_AAS  2
4  1004     Ni_AAS  2
5  1005     Co_AAS  2
6  1006     Ag_AAS  0.2
7  1007     Mn_AAS  5
8  1010     Fe_AAS  0.02

Associated Analytical Packages:

IndexPackage IDPackage Name
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