GB/T 22104-2008
Active
T/CAIA SH015-2021
Active
Group standards
T/CAIA SH015-2021 Rapid determination of cadmium in soil: Solid direct injection electrothermal evaporation atomic absorption spectroscopy method
T/CAIA SH015-2021 Rapid determination of cadmium in soil: Solid direct injection electrothermal evaporation atomic absorption spectroscopy method
Price:
$ 20.00
Basic Information
Standard Code:
T/CAIA SH015-2021
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Environmental protection sampling and analysis testing methods
ICS Name:
Comprehensive soil testing
Publish Date:
2021-03-10
Implement Date:
2021-03-31
Scope
Scope: This standard is applicable to the determination of cadmium content in soil. When the sampling amount is 0.1 g, the method's quantitative limit is 0.003 mg/kg, and the measurement range is 0.003 mg/kg to 2.0 mg/kg; Main technical content: After the soil sample is introduced into the electric thermal evaporator, the sample is heated under airflow to remove water and organic matter. The cadmium released from the sample during pyrolysis in nitrogen-hydrogen mixed gas is atomized in the hydrogen flame. The cadmium atoms absorb the characteristic spectral line at 228.8 nm. Within a certain concentration range, the absorption intensity is proportional to the cadmium concentration, and the quantitative determination is performed using the external standard method.
Development Information
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