以下为句子列表：
英文: A new method to determine the concentration of ammonia-nitrogen by ammonium ion selective electrode has been introduced in this paper.
中文: 摘要本文介绍一种新型的测量氨氮浓度的方法―铵离子选择电极分析法。
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英文: A review is presented on the recent progress and the prospect of the determination of microamounts of iodine in table salt by different electrochemical methods, such as ion selective electrode, electrometric titration, polarography, stripping voltammetry,
中文: 摘要从离子选择电极法、电化学滴定法、极谱法、溶出伏安法、电位溶出法、吸附溶出伏安法、挥气电流法、光谱电化学法和电泳法出发，评述了食盐中碘含量测定的电化学分析法研究现状及发展方向。
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