GB/T 17139-1997: Soil quality. Determination of nickel. Flame atomic absorption spectrophotometry

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Scope

1.1 This standard specifies the flame atomic absorption spectrophotometric method, for
the determination of nickel in soil.
1.2 The detection limit of this standard (calculated on the basis of weighing 0.5 g of
specimen and distilling it to 50 ml) is 5 mg/kg.
1.3 Interference
1.3.1 When using the 232.0 nm line as the absorption line, there are three nickel lines
with very close wavelength distances, which shall be overcome, by selecting a narrower
spectral passband.
1.3.2 The 232.0 nm line is in the ultraviolet region. The light scattering and molecular
absorption, which are caused by salt particles and molecular compounds, are relatively
serious, which will affect the measurement. Use background correction to overcome
this type of interference. If the concentration permits, the method of diluting the test
solution can also be used, to reduce background interference.

Basic Data

Standard ID	GB/T 17139-1997 (GB/T17139-1997)
Description (Translated English)	Soil quality. Determination of nickel. Flame atomic absorption spectrophotometry
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	Z18
Classification of International Standard	13.08
Word Count Estimation	5,520
Date of Issue	12/8/1997
Date of Implementation	5/1/1998
Summary	This standard specifies the determination of nickel in soil by flame atomic absorption spectrophotometry. The detection limit of the standard (by weighing 0. 5g sample digestion volume to 50ml computing) is 5mg/kg.