Analytical Suite Metadata

Chemex (lake and stream sediments) AAS (Mo; nitrous oxide-acetylene)

Chemex, lake and stream sediments; atomic absorption spectroscopy (molybdenum; nitrous oxide-acetylene flame)

General Methodology:

Determination was by atomic absorption spectroscopy using a nitrous oxide acetylene flame.  A 0.5 gram sample was reacted with 1.5 ml concentrated HNO3 at 90oC for 30 minutes.  At this point 0.5 ml concentrated HCl was added and the digestion was continued at 90oC for an additional 90 minutes.  After cooling, 8 ml of 1250 ppm Al solution were added and the sample solution was diluted to 10 ml before aspiration.

Instrument: unstated

Sample material: solid

Sample weight: 500 milligrams

Analytical Technique:

Hierarchical classification

Technique >> Spectroscopy >> Electromagnetic radiation >> Visible-ultraviolet >> Atomic >> Absorption >> Flame >> C2H2/N2O



Analytical Decomposition:

Hierarchical classification

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


Aqua Regia (s.s.) | Lefort | Aqua Regia (Acme/BVM) | Aqua regia (NGR) | Aqua regia (NASGLP)

Analytical Methods:

IndexMethod OrderMethod IDQuantityDetection Limit
1  1009     Mo_AAS  2

Associated Analytical Packages:

IndexPackage IDPackage Name
1  147     Chemex (URP lake sediment) AAS (8+Mo), CVAAS (Hg), COL(As), ISE(F), LOI
2  150     Chemex (URP lake sediment) AAS (8+Mo), CVAAS (Hg), COL(As), LOI (detailed description)
3  152     Chemex (URP stream sediment) AAS (8+Mo), CVAAS (Hg)
4  158     Chemex (URP stream sediment) AAS (8+Mo+Ba), CVAAS (Hg), COL(W)
5  274     Chemex (URP stream sediment) AAS (8+As+Mo), CVAAS (Hg), COL(W dl=2ppm)
6  334     Chemex (URP lake sediment) AAS (8+Mo), COL(As), LOI (detailed description)
7  364     Chemex (URP lake sediment) AAS(8+Mo+As), LOI
8  366     Chemex (URP lake sediment) AAS(8+Mo+As), ISE(F), LOI
9  369     Chemex (URP stream and lake sediment) AAS(8+Mo), COL(W, dl=4ppm)
10  370     Chemex (URP stream sediment) AAS (8+Mo), COL(W)
11  374     Chemex (URP stream sediment) AAS (8+As+Mo), CVAAS (Hg), COL (W, dl 4ppm)
12  378     Chemex (URP stream sediment) AAS (8+As+Mo+Sb), CVAAS (Hg), COL(W)
13  390     Chemex (NGR stream sediment) AAS (8+3), cold vapour (Hg), COL(W), NADNC(U)
14  416     Chemex (NGR lake sediment) AAS (8+5), CVAAS (Hg), COL(W), LOI, NADNC (U-5**10)
15  417     Chemex (NGR stream sediment)  AAS (8+5), CVAAS (Hg), COL(W), LOI, NADNC (U-5**10)
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