التطبيقات

1 Method Summary

After proper pretreatment, the sample is injected into a graphite tube atomizer. Cadmium ions in the sample are vaporized and dissociated into atomic vapor at high temperature inside the graphite tube. Ground-state atoms of the target analyte absorb resonance radiation emitted from a cadmium hollow cathode lamp, and the absorbance is proportional to cadmium concentration within a certain range.

2 Scope of Application

This method is applicable to the determination of cadmium in surface water.

3 Reference Standard

GB/T 5750.6-2006 Standard Examination Methods for Drinking Water – Metal Parameters

4 Testing Instruments

· Graphite Furnace Atomic Absorption Spectrometer 1 unit — Cadmium hollow cathode lamp

· Circulating cooling water system 1 unit Rated pump flow rate: 3.5 L/min