NEMI Method Summary


Method Summary Information

Method Number:

I-2274

Media:

WATER

Revision:

1989

Method Source:

U.S. Geological Survey (USGS)

Subcategory:

INORGANIC

Analytes in this method

Official Name:

Copper, atomic absorption spectrophotometry, graphite furnace

Descriptive Name

Copper, dissolved in water by GFAA

Source Info:

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

Citation:

U.S. Geological Survey Open-File Report 93-125

131929

Byte file

Brief Method
Summary:

Copper is determined by atomic absorption spectrophotometry in conjunction with a graphite furnace containing a graphite platform (Hinderberger and others, 1981). A sample is placed on the graphite platform, and the sample then is evaporated to dryness, charred, and atomized using high-temperature ramping. The absorption signal produced during atomization is recorded and compared with standards.

Scope And
Application:

This method is used to determine copper in samples of water with a specific conductance not greater than 10,000 uS/cm.

Applicable
Conc Range:

1-25ug/L

Interferences:

Interferences for samples with specific conductances less than 10,000 uS/cm normally are small. In addition, the use of the graphite platform reduces the effects of many interferences.

QC 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.

Max Holding Time:

180 days

Relative Cost:

$51 to $200

5681

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Method Summary Information