Analytical Suite Metadata

Chemex (lake sediment) AAS (Zn, Cu, Pb, Ni, Co, Ag, Mn, Fe, Cd; air acetylene flame) – 6ml, held for 2hrs



Chemex,  lake sediment; atomic absorption spectroscopy (Zn, Cu, Pb, Ni, Co, Ag, Mn, Fe, Cd; air acetylene) – 6ml of mixture, held at 90C for 2 hours

General Methodology:

A 1 gram sample was reacted with 6 ml of a mixture of 4M HCL and M HNO3 in a test-tube overnight at room temperature.  After the overnight digestion, the test-tube was immersed in a hot water bath at room temperature and brought up to 90°C and held at this temperature for 2 hours with periodic shaking.  The sample solution 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, Cd.

Instrument: unstated

Sample material: solid

Sample weight: unstated


Analytical Technique:

Hierarchical classification

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

Children

None


Analytical Decomposition:

Hierarchical classification

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

Children

Aqua regia (NGR-S) | Aqua regia (NGR-L) | Aqua regia (NGR-S, no details) | Aqua regia (NGR-L, no details) | Aqua regia (NGR-LS) | Aqua regia (NGR-S, alternate) | Aqua regia (NGR-L, alternate) | Aqua regia (NGR-S, BC)


Analytical Methods:

IndexMethod OrderMethod IDQuantityDetection Limit
1  2159     Zn_AAS  2
2  2160     Cu_AAS  2
3  2161     Pb_AAS  2
4  2162     Ni_AAS  2
5  2163     Co_AAS  2
6  2164     Ag_AAS  0.2
7  2165     Mn_AAS  5
8  2166     Fe_AAS  0.02
9  3000     Cd_AAS  0.2

Associated Analytical Packages:

IndexPackage IDPackage Name
1  294     Chemex (NGR lake sed 1983 samples) AAS (8+4), CVAAS (Hg), LOI500, U, ISE( F)
2  386     Chemex (NGR lake sediment) AAS (8+4), CVAAS (Hg), LOI500, U
3  387     Chemex (NGR lake sediment, 1982 samples) AAS (8+4), CVAAS (Hg), LOI500, U, ISE(F)
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