New Possibility for REE Determination in Oil

Table 2

Conditions and working parameters of autoclaves decomposition of oil sample.

Sample mass	Acid volume	Time and temperature
𝑚𝑠, g	𝑉HNO3, mL	1	2	3
0.5	10	1 h—160°C	1 h—180°C	2 h—200°C