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以硝酸银代替硫酸汞络合氯离子的干扰,可使COD废液排入下水前已除去金属汞,避免了一类污染物汞对环境的潜在危害.
With silver nitrate instead of mercury sulfate complex chloride ion interference, COD waste liquid can be discharged into the water before the metal mercury has been removed, to avoid a class of pollutants mercury potential harm to the environment.