GB/T 18116.2-2008Chemical analysis methods of Yttrium-europium oxides - Determination of europium oxides (English PDF)

3.1

hydrochloric acid (1 + 1), pure class distinctions.

3.2

hydrochloric acid (1 + 19), pure class distinctions.

3.3

Argon ((mass fraction) > 99.99%).

3.4 yttrium oxide stock solution

Weigh 0.1000g 1h at 900 °C burning yttrium oxide (REO (mass fraction) > 99.9%, Y2O3/REO (Mass fraction) > 99.99%), placed in 100mL beaker, add 10mL of hydrochloric acid (1 + 1), low temperature dissolved and transferred to 100mL volumetric flask

Diluted with water to volume, and mix. 1mL solution containing 1mg yttrium oxide.

3.5 europium oxide stock solution

Weigh 0.1000g 1h at 900 °C burning of europium oxide (REO (mass fraction) > 99.9%, Eu2O3 /

REO (mass fraction) > 99.99%), placed in 100mL beaker, add 10mL of hydrochloric acid (1 + 1), low temperature dissolved and transferred to 100mL

Volumetric flask, dilute with water to volume, and mix. 1mL solution containing 1mg europium oxide. This solution was then washed with hydrochloric acid (3.2) diluted to

1mL containing 0.1mg standard solution of europium oxide.

4.1

Inductively coupled plasma spectrometer with a resolution of < 0.006nm (200nm office).

4.2 source

argon plasma light source.

6.1 Preparation of test solution analysis

6.1.1

Accurately weigh 0.1000g sample (5) in 50mL beaker, moistened with water, was added 10mL of hydrochloric acid (3.1), and dissolved at a low temperature

Cooled to room temperature and transferred to 100mL volumetric flask, dilute with water to volume, and mix.

6.1.2

Pipette 10.00mL test solution (6.1.1) added 9mL hydrochloric acid (3.1) in 100mL volumetric flask, dilute with water to volume, and mix.

Tested.

6.2 preparation of standard solution

The rare earth oxide stock solution (3.4 to 3.5) in Table 1 were transferred to 100mL volumetric flask (3.2) diluted to the mark with hydrochloric acid

Degree of mixing, to prepare the standard solution.