光谱学与光谱分析, 2010, 30 (7): 1948, 网络出版: 2011-01-26  

大气压电解液阴极辉光放电发射光谱检测水体中的金属残留

Detection of Metal Residue in Aqueous Solutions by Electrolyte Cathode Atmospheric Glow Discharge Emission Spectroscopy
作者单位
1 中国科学院安徽光机所环境光谱研究室, 安徽 合肥230031
2 重庆邮电大学光电工程学院, 重庆400065
摘要
水环境中的金属残留严重威胁人类的健康安全, 急需快速、 高效的金属残留检测技术。 文章报道了自行建立的大气压电解液阴极辉光放电发射光谱装置。 利用待测液体作为放电阴极进行大气压辉光放电实现了水体中金属离子的痕量检测。 对配制的标准样品进行了定量测量, 基于背景发射光谱的3σ计算, 获得了大气压电解液阴极辉光放电光谱装置对Na, Li, Cu, Pb和Mn等5种金属元素的检测限, 分别为0.008, 0.005, 1.1, 2.06和1.95 mg·L-1。 该装置在金属残留的实时在线检测领域具有应用前景。
Abstract
Toxic metal elements in waters and wastewaters contaminate the environment and greatly threaten the health of human beings, therefore developing a rapid monitor for metal residues in aqueous solutions is urgently required.In the present work, a new homemade apparatus of electrolyte cathode atmospheric glow discharge emission spectroscopy was developed and described. It can detect and discriminate many kinds of trace mental elements by atomic emission spectrum from atmospheric pressure liquid cathode glow discharge. In order to estimate the analytical performance of the present atmospheric pressure electrolyte cathode glow discharge emission spectroscopy system, the detection limit values for Na, Li, Cu, Pb and Mn were obtained based on 3σ of the background signal, and the current limits of detection were 0.008, 0.005, 1.1, 2.06 and 1.95 mg·L-1, respectively. It demonstrates that the atmospheric pressure electrolyte cathode glow discharge emission spectroscopy has a promising application in real time measurements of metal residues in aqueous solutions.

郑培超, 王鸿梅, 李建权, 韩海燕, 席晓琴, 储焰南. 大气压电解液阴极辉光放电发射光谱检测水体中的金属残留[J]. 光谱学与光谱分析, 2010, 30(7): 1948. ZHENG Pei-chao, WANG Hong-mei, LI Jian-quan, HAN Hai-yan, XI Xiao-qin, CHU Yan-nan. Detection of Metal Residue in Aqueous Solutions by Electrolyte Cathode Atmospheric Glow Discharge Emission Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2010, 30(7): 1948.

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