USGS-NWQL: I-1499: Nickel, dissolved, direct FLAA

Summary
Analytes
Revision
Data and Sites

Official Method Name

Nickel, atomic absorption spectrometric, direct

Current Revision

1966

Media

WATER

Instrumentation

Flame Atomic Absorption

Method Subcategory

Inorganic

Method Source

USGS-NWQL

Citation

Methods for the Determination of Inorganic Substances in Water and Fluvial Sediments, Techniques of Water-Resources Investigations of the United States Geological Survey, Book 5, Chapter A1 Edited by Marvin J. Fishman and Linda C. Friedman

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 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.

Applicable Concentration 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.

Quality Control 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: Filter through 0.45-um filter, use filtered sample to rinse container, acidify sample with nitric acid to pH <2

Maximum Holding Time

180 days

Relative Cost

Less than $50

Sample Preparation Methods

This method has 1 analyte associated with it.

Analyte	Detection Level	Bias	Precision	Pct False Positive	Pct False Negative	Spiking Level
Nickel(7440-02-0) Ni Nickel Nickel, soluble salts Raney Nickel (R)	100.000 ug/L	N/A	18.00			6.20 ug/L

Precision Descriptor Notes:	Precision data for nickel are below the reporting level of 100 ug/L. Samples were not available that contained greater nickel concentrations; however, precision should improve at greater concentrations. Precision determined from results from 5 laboratories.
Detection Level Note:	Reporting Level defined as smallest measured concentration of a constituent that may be reliably reported using a given analytical method.

Revision	PDF/Link
1966

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USGS-NWQL: I-1499: Nickel, dissolved, direct FLAA

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