化肥中铵离子的连续流动化学发光测定法。

Continuous-flow chemiluminometric determination of ammonium ion in fertilizers.

作者信息

Halvatzis S A, Timotheou-Potamia M M

机构信息

Laboratory of Analytical Chemistry, University of Athens, Panepistimiopolis, 157 71 Athens, Greece.

出版信息

Talanta. 1993 Aug;40(8):1245-54. doi: 10.1016/0039-9140(93)80194-v.

DOI:10.1016/0039-9140(93)80194-v

PMID:18965775

Abstract

A simple continuous-flow chemiluminometric method for the determination of 0.0540-5.40 mug/ml of ammonium ion is described. The method is based on the chemiluminescence generated during the oxidation of ammonium ion by N-bromosuccinimide in alkaline medium. The emission intensity is greatly enhanced if dichlorofluorescein is also present in the reaction solution. The analysis is automated, requires no sample pre-treatment and solutions can be analysed at a rate of 106 solutions/hr with a relative error of about 2.5%. The method was applied satisfactorily to the determination of ammonium ion in solid and liquid fertilizers.

摘要

描述了一种用于测定0.0540 - 5.40微克/毫升铵离子的简单连续流动化学发光法。该方法基于在碱性介质中N-溴代琥珀酰亚胺氧化铵离子过程中产生的化学发光。如果反应溶液中也存在二氯荧光素，发射强度会大大增强。该分析实现了自动化，无需样品预处理，溶液分析速率可达每小时106个，相对误差约为2.5%。该方法已成功应用于固体和液体肥料中铵离子的测定。