GB/T 30119-2013Preparation method of calibration solution for atomic absorption measurement (English PDF)

1 Scope

This standard specifies the method for preparing measuring atomic absorption of copper, cadmium calibration solutions, prepared reagents, equipment requirements, the uncertainty of the calibration solution

Given evaluation method and verification method.

This standard applies to atomic absorption measurement calibration solution prepared using, but also for the preparation of the relevant solutions in spectroscopy instrument calibration.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

Laboratory use specifications and test methods GB/T 6682-2008 Analysis

3 Reagents

Test reagent.

a) nitric acid. pure class distinctions;

b) copper. high-purity;

c) cadmium. high purity;

d) Water. This water standard, unless otherwise indicated, shall comply with GB/T 6682-2008 two water requirements;

e) ethanol. AR.

4 Device

Test equipment.

a) Balance. After verification or calibration of the balance within the validity period, the largest weighing <=200g, actual scale than 0.1mg, verification scale

Value than 1mg;

b) 1mL, 2mL, 5mL, 10mL single marking pipettes. A level;

c) 100mL, 1000mL volumetric flask. A level;

d) 100mL beaker;

e) quantitative filter paper;

f) the dryer;

g) high-pressure polyethylene bottles.

5 Preparation of the solution