USGS-NWQL: I-1399:  Lead, dissolved, FLAA

  • Summary
  • Analytes
  • Revision
  • Data and Sites
Official Method Name
Lead, atomic absorption spectrometric, direct
Current Revision
1985
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
Lead is determined by flame atomic absorption spectrometry by direct aspiration of the sample solution into an air-acetylene flame.
Scope and Application
This method may be used to analyze water containing at least 100 ug/L of lead. Sample solutions containing more than 4,000 ug/L need either to be diluted or to be read on a less expanded scale.
Applicable Concentration Range
100 ug/L to 4,000 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), nitrate (900 mg/L), iron (4 X 106 ug/L), and cadmium, nickel, copper, zinc, cobalt, and chromium (10,000 ug/L) 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 I each after every 10 samples
Sample Handling
Container Description: 250 mL Polyethylene bottle, acid-rinsed.
Treatment and Preservation: Filter through 0.45-um filter, use filtered sample to rinse containers and acidify sample with HNO3 to pH < 2.
Maximum Holding Time
180 days
Relative Cost
Less than $50
Sample Preparation Methods