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Table 6 Chemical analysis of REEs in the stripping solution by ICP–OES

From: Alkali treatment–acid leaching of rare earth elements from phosphogypsum fertilizer: insight for additional resource of valuable components

Element

Concentration

(mg/kg)

La

98.5

Ce

211.3

Pr

19.8

Nd

Sm

Er

67.3

Y

12.8

Yb

Total REEs 

 ~ 409.7 mg/kg ~ 85.2%