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Voltammetric Sensors for Formaldehyde
Author(s): Zhang Zheng-qi, Zou Min-fen, Fang Yang, Wang Xiu-he
Pages: 38-
41
Year: 2001
Issue:
4
Journal: CHEMICAL SENSORS
Keyword: 甲醛; 传感器; 伏安法;
Abstract: 制备了测定甲醛用的碳糊伏安传感器.甲醛与2,4-二硝基苯肼反应生成2,4-二硝基苯腙,该产物在含0.010mol/L NaCl和0.0050%十二烷基磺酸钠的pH1.9缓冲溶液中,于-0.65V左右呈现一灵敏的阴极溶出伏安峰,线性范围为1.0×10-8mol/L~1.0×10-5mol/L,检测下限达2.4×10-9mol/L,用膜池富集空气中的甲醛后,用所提出的方法测定甲醛含量,结果满意.
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