此体系以弱酸性艳蓝(RAWL)为指示剂，高碘酸钾为氧化剂，氨三乙酸(NTA)作活化剂。
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该方法是基于 弱酸艳蓝染料（RAWL）由高碘酸钾使用的次氮基三乙酸（NTA）作为活化试剂与氧化锰（II）的催化效果。
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It took two weeks for Lawrence Rawl, Exxon's chief executive at the time, to visit the scene and make any kind of substantive statement about the tragedy.
ECONOMIST: Idea
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