Ammonium detection by formation of colored zebra-bands in a detecting tube

作者：Hori Tatsuaki; Niki Keizou; Kiso Yoshiaki^*; Oguchi Tatsuo; Kamimoto Yuki; Yamada Toshiro; Nagai Masahiro

来源：Talanta, 2010, 81(4-5): 1467-1471.

DOI：10.1016/j.talanta.2010.02.053

• Ammonium detection
• Visual determination
• Colored zebra-band
• Wastewater treatment

Ammonium ion was colorized by means of a diazo coupling reaction with 2-phenylphenol, where the color development reaction was conducted within 3 min by using boric acid as a catalyst The resulting colored solution (0.5 ml) was supplied by suction to a detecting tube consisting of a nonwoven fabric test strip (2 min wide, 1 mm thick. 150 mm long) impregnated with benzylcetyldimethylammonium chloride in a stripe pattern and enclosed in a heat-shrinkable tube. When the colored solution was supplied to the detecting tube, blue zebra-bands formed, and the ammonium concentration was determined by counting the number of zebra-bands.

• 出版日期2010-6-15