Afkhami Abbas, Madrakian Tayyebeh, Maleki Abbas
Department of Chemistry, Faculty of Science, Bu-Ali Sina University, Hamadan, Iran.
Anal Sci. 2006 Feb;22(2):329-31. doi: 10.2116/analsci.22.329.
A simple, precise and accurate method is proposed for rapid determination of trace amounts of hydroxylamine based on the reaction of hydroxylamine with iodate in acidic media. The reaction of neutral red by the produced nitrite ion was used to monitor the reaction spectrophotometrically at 525 nm by a fixed time method. Hydroxylamine in the range of 0.0400-1.200 microg mL(-1) could be determined. The relative standard deviation for 10 determinations of 0.500 microg mL(-1) hydroxylamine was 1.81% and the limit of detection was 0.010 microg mL(-1). The proposed method was applied to the determination of hydroxylamine in water samples with satisfactory results.
提出了一种基于羟胺在酸性介质中与碘酸盐反应快速测定痕量羟胺的简单、精确且准确的方法。利用生成的亚硝酸根离子与中性红的反应，通过固定时间法在525nm处进行分光光度监测反应。可测定0.0400 - 1.200μg mL⁻¹范围内的羟胺。对0.500μg mL⁻¹羟胺进行10次测定的相对标准偏差为1.81%，检测限为0.010μg mL⁻¹。该方法应用于水样中羟胺的测定，结果令人满意。
