摘要
基于纳米金的表面等离子体共振作用,建立了一种分光光度法以快速检测水体中的肼。采用单因素实验的方法研究了最佳反应条件,确定了检测方法的线性范围、检出限、重复性以及选择性,并考察了该方法在实际水样中的应用情况。结果表明,最佳的反应条件为pH值11,PVP浓度8g·L^-1,氯金酸浓度3mmol/L,反应时间5min。该方法的线性范围为2~100μmol/L(r=0.997),检出限(3Sb)为0.52μmol/L。对含有肼10μmol/L和50μmol/L的溶液进行六次平行测定的相对标准偏差分别为3.7%和2.4%。该方法的选择性良好,可成功检测自来水和湖水样品中的肼,回收率为95.3%~98.6%。
Amethod was established to rapidly detect hydrazine in water based on the surface plasmon resonance of gold nanoparticles. The optimal reaction conditions were studied through single factor tests. The linear range,detection limit, repeatability and selectivity of the detection method were determined and the application of the method in actual water samples was investigated. The results show that The optimum reaction conditions are pH value 11,the PVP concentration 8 g·L^-1,the chloroauric acid concentration 3 mmol /L,and the reaction time 5 min. The linear range of the method is 2-100 μmol /L ( r = 0.997). The limit ( 3Sb ) is 0.52 μmol /L. The relative standard deviation ( RSD) for determination of 10 μmol /L and 50 μmol /L of hydrazine is 3.7% and 2.4%( n = 6),respectively. The method has good selectivity and can successfully detect hydrazine in tap water and lake water samples,and the recovery rate is 95.3%-98.6%.
作者
姚旭
张光友
刘博
谢拯
王煊军
YAO Xu;ZHANG Guangyou;LIU Bo;XIE Zheng;WANG Xuanjun(No.207 Office,Rocket Force University of Engineering,Xi’an 710025;Center for Propellants Determination and Protection,Space Systems Division,Beijing 100101)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2019年第A01期310-313,共4页
Materials Reports
基金
国家自然科学基金(51701103)~~
关键词
分析化学
肼
纳米金
比色检测
analytical chemistry
hydrazine
gold nanoparticles
colorimetric detection
