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Table 2 Arsenic content in mineral residue before and after digestion with hydrochloric acid

From: Reduction of arsenic content in a complex galena concentrate by Acidithiobacillus ferrooxidans

Run Residue before digestion % arsenic Residue after digestion % arsenic Difference % arsenic
1 3.5208 2.6332 0.8876
2 3.5751 2.7105 0.8646
3 3.6283 3.0034 0.6249
4 3.6452 2.9911 0.6541
5 3.5291 2.5907 0.9384
6 3.5325 2.5821 0.9504
7 3.6334 2.9436 0.6898
8 3.6021 2.9784 0.6237