Page 84 - 《精细化工》2021年第7期

·1366· 精细化工 FINE CHEMICALS 第 38 卷

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与 Ba 、Hg 的亲和力，K 、Na 、Cs 和 Ca 等 4 种 其是 Pb 具有选择响应性能，且该自组装膜对 Pb 2+
金属离子与凝胶中冠醚基团的亲和力非常弱。因此， 的响应性能具有可逆性，并易于通过其结构色的变
自组装膜对以上金属离子的敏感性遵循相同的趋势。 化进行判断。总之，该膜的研究为开发具有裸眼可
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2.3.4 自组装膜对 Pb 的响应可逆性 视检测的温度和重金属离子尤其是 Pb 检测试纸化
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自组装膜对 Pb 的可逆响应是评价自组装膜是否 材料提供了重要思路。
有实际应用价值的重要指标。图 8 展示了自组装膜在 参考文献：
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Pb 浓度为 60 和 0 μmol/L 水溶液中循环响应的结果。
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