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本法基于在密封条件下用KI溶液吸收Cl_2和SO_3,用NaOH吸收CO_2并滴定SO_3,用H_2SO_4滴定CO_2。方法简便快速,结果满意。
This method is based on the adsorption of Cl_2 and SO_3 with KI solution under sealed conditions, the absorption of CO_2 with NaOH and the titration of SO_3, and the titration of CO_2 with H_2SO_4. The method is simple and quick with satisfactory results.