NEMI Method Summary


Method Summary Information

Method Number:

I-5499

Media:

SOILS/SEDIMENT

Revision:

1972

Method Source:

U.S. Geological Survey (USGS)

Subcategory:

INORGANIC

Analytes in this method

Official Name:

Nickel, atomic absorption spectrometric, direct

Descriptive Name

Nickel, recoverable-from-bottom-material, dry wt, FLAA

Source Info:

USGS Branch of Information Services
Box 25286, MS 417
Federal Center
Denver, CO 80225-0286
Phone: 303-202-4700

Citation:

USGS Methods, Volume A1

115320

Byte file

Brief Method
Summary:

Nickel is determined by atomic absorption spectrometry by direct aspiration of the sample into an air-acetylene flame without preconcentration or pretreatment.

Scope And
Application:

This method may be used to analyze bottom material containing at least 5.0 ug/g of nickel. Sample solutions containing more than 1,000 ug/L need either to be diluted or to be read on a less expanded scale. Recoverable nickel in bottom material needs to undergo preliminary digestion-solubilization by method I-5485 before being determined.

Applicable
Conc Range:

100 to 1000 ug/L before conversion to ug/g

Interferences:

Individual concentrations of sodium (9,000 mg/L), potassium (9,000 mg/L), calcium (4,000 mg/L), magnesium (4,000 mg/L), sulfate (9,000 mg/L), and cadmium, lead, copper, zinc, cobalt, and chromium (10,000 ug/L each) do not interfere. Higher concentrations of each constituent were not investigated.

QC Requirements:

Calibrate instrument using calibration standards (CAL); quality control samples (QCS); and laboratory blanks (LB) analyzed at a minimum of 1 for every 10 samples.

Sample Handling:

Bottom Material (stream bed sediment) 500 mL wide mouth propylene bottle; no treatment or preservation requirements.

Max Holding Time:

Sample Prep Met

I-5485

Relative Cost:

Less than $50

5505

Page 1

Method Summary Information