FIELD: gas treatment. SUBSTANCE: emission gases are passed at velocity 0.5 m/s and 10-30 C through specially selected activated carbon bed with pH value 7.1- 7.5. In particular, trialkylarsines with nonpolar groups but also with polar groups such as chloro, chlorovinyl, and ethoxy, butoxy, and isobutyloxy groups are removed. EFFECT: improved gas purification efficiency. 2 cl, 2 tbl, 12 ex
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