Analytical Suite Metadata

Chemex (lake sediments) COL (As)



Chemex, lake sediments; colorimetry (arsenic)

General Methodology:

Arsenic was determined colorimetrically, using silver diethyldithiocarbamate. Decomposition was accomplished by heating a 1 gram sample with 20 ml of 6M HCl at 90oC for 1.5 hours.  Colorimetric measurements were made at 520 nm.

Instrument: unstated

Sample material: solid

Sample weight: unstated


Analytical Technique:

Hierarchical classification

Technique >> Photometry >> Colorimetry

Children

Dithizone


Analytical Decomposition:

Hierarchical classification

Decomposition >> Aqueous dissolution >> Acid >> Moderate Acid >> HCl

Children

None


Analytical Methods:

IndexMethod OrderMethod IDQuantityDetection Limit
1  1073     As_Col  1

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)
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