期刊
ANALYTICA CHIMICA ACTA
卷 434, 期 2, 页码 261-267出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0003-2670(01)00846-7
关键词
flow-injection analysis; hydroxylamine; biamperometry; pretreated platinum electrode
Flow-injection biamperometry is used for the direct determination of hydroxylamine based on coupling two independent and irreversible electrode processes, the oxidation of hydroxylamine and the reduction of platinum oxide. In operation a potential difference of 0 V is imposed between two platinum wire electrodes pretreated by an anodization step. and the resulting current is measured. Hydroxylamine can be determined in the range of 6 x 10(-7) to 4 x 10(-5) mol l(-1) with the detection limit of 1 x 10(-7) mol l(-1). Nitrogen-containing compounds such as nitrate, nitrite and ammonia that often accompany hydroxylamine in the process of nitrogen cycle do not cause significant interference. The stability of the detector is shown by a relative standard deviation (R.S.D.) of 1.4% for 50 replicate determinations of 1 x 10-5 mol l(-1) hydroxylamine. (C) 2001 Elsevier Science B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据