GB/T 22104-2008
Active
T/CAIA SH013-2021
Active
Group standards
T/CAIA SH013-2021 Determination of Cadmium in Soil by Flame Atomic Fluorescence Spectrometry
T/CAIA SH013-2021 Determination of Cadmium in Soil by Flame Atomic Fluorescence Spectrometry
Price:
$ 20.00
Basic Information
Standard Code:
T/CAIA SH013-2021
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
\nSoil and fertilizer
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 in soil and aquatic sediments. According to different sample weighing quantities and dilution volumes, the determination range of the final solution is 0.01 μg/L to 100 μg/L. Main technical content: The flame atomic fluorescence spectrometry method for determining cadmium involves directly introducing the sample solution into the transport chamber by pneumatic atomization, atomizing it in the atomizer, and exciting the cadmium atoms with a high-intensity characteristic sharp-line light source (double cathode hollow cathode lamp) to make the atoms undergo energy level transition. During the process of returning from the high-energy state to the ground state, the atoms release atomic fluorescence, and the intensity of the atomic fluorescence signal of the atoms to be determined is proportional to their concentration. By measuring the intensity of the fluorescence signal, the concentration of cadmium in the sample solution can be calculated.
Development Information
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