NEMI Method Summary

Method Summary Information

Method Number: I-3499 Media: WATER
Revision: 1985
Method Source: U.S. Geological Survey (USGS)
Subcategory: INORGANIC Analytes in this method
Official Name: Nickel, atomic absorption spectrometric, direct
Descriptive Name Nickel, total recoverable 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 water-suspended sediment containing at least 100 ug/L 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. Sample solutions containing less than 100 ug/L and brines need to be analyzed by the atomic absorption spectrometric chelation-extraction method, providing that the interference limits discussed in that method are not exceeded.
Total recoverable nickel in water-suspended sediment needs to undergo preliminary digestion-solubilization by method I-3485 before being determined.
Applicable
Conc Range:
 100 to 1000 ug/L
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: Container Description: 250 mL polyethylene bottle, nitric acid rinsed
Treatment and handling: Use unfiltered sample to rinse container, acidify sample with nitric acid to pH <2
Max Holding Time:
 180 days
Sample Prep Met I-3485
Relative Cost: Less than $50
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