GB/T 17141-1997: Soil quality. Determination of lead, cadmium. Graphite furnace atomic absorption spectrophotometry

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Scope

1.1 This Standard specifies the graphite furnace atomic absorption
spectrophotometry for determining the lead and cadmium in the soil.
1.2 The detection limit (calculated by digesting 0.5g of test piece to the
constant volume of 50mL) of this Standard is as follows. 0.1 mg/kg, for both
lead and cadmium.
1.3 USE the Zeeman method, self-absorption method and deuterium lamp
method to deduct the background. In the presence of a matrix modifier such as
diammonium hydrogen phosphate or ammonium chloride, directly
DETERMINE the trace lead and cadmium in test solution. There is no
interference.

Basic Data

Standard ID	GB/T 17141-1997 (GB/T17141-1997)
Description (Translated English)	Soil quality. Determination of lead, cadmium. Graphite furnace atomic absorption spectrophotometry
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	Z18
Classification of International Standard	13.08
Word Count Estimation	5,589
Date of Issue	12/8/1997
Date of Implementation	5/1/1998
Summary	This standard specifies the determination of lead in soil, cadmium by graphite furnace atomic absorption spectrophotometry. The detection limit of the standard (by weighing 0. 5g sample digestion volume to 50ml calculated) as: Lead 0. 1mg/kg, cadmium 0. 01mg/kg. Zeeman method using self-absorption method and charged deuterium lamp background, and in the diammonium phosphate or ammonium chloride matrix modifiers exist, the direct determination of trace amounts of the test solution of lead, cadmium and no interference.