[Detection of metal residue in aqueous solutions by electrolyte cathode atmospheric glow discharge emission spectroscopy].
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 3sigma 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.
Zheng
Pei-chao
PC
Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China. pczheng@gmail.com
Wang
Hong-mei
HM
Li
Jian-quan
JQ
Han
Hai-yan
HY
Xi
Xiao-qin
XQ
Chu
Yan-nan
YN
D001274:Atmospheric Pressure; D004566:Electrodes; D004573:Electrolytes; D000075322:Heavy Metal Poisoning; D007477:Ions; D057230:Limit of Detection; D008670:Metals / Q000032:analysis*; D011041:Poisoning; D013057:Spectrum Analysis; D014867:Water; D014874:Water Pollutants, Chemical / Q000032:analysis*
D004573:Electrolytes; D007477:Ions; D008670:Metals; D014874:Water Pollutants, Chemical; D014867:Water