Table 1 Ion concentration detection of optimum product and the results of comparison
From: Preparation and characterization of 10B boric acid with high purity for nuclear industry
Ion | Sample in this study/10−6 | Analytical purity sample/10−6 | High purity sample of GB/T 628-2011/10−6 | High purity sample of E. Merck/10−6 |
|---|---|---|---|---|
(Cl) | 2.1 | 5 | 5 | 1 |
(Ca) | 0.6 | 20 | 2 | 0.05 |
(Fe) | 1.2 | 5 | 0.5 | 0.05 |
(Fe) | 5.4 (without adding H2O2) | |||
(Pb) | <0.005 | 10 | 0.2 | 0.02 |
(As) | 0.03 | 1 | 0.5 | 0.05 |
(SO4) | 0.5 | 20 | 20 | 5 |
Undissolved substance | 10 | 50 | 50 | – |