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本文选用镧为释放剂,在盐酸介质中,以空气-乙炔火焰,洲定铬冶炼废水中的钙、镁。
In this paper, lanthanum as a release agent, hydrochloric acid medium, with air - acetylene flame, Chau Ding chromium smelting wastewater calcium and magnesium.