Hatzistavros Vasilios S, Kallithrakas-Kontos Nikolaos G
Technical University of Crete, Analytical and Environmental Chemistry Laboratory, GR-73100 Chania, Greece.
Technical University of Crete, Analytical and Environmental Chemistry Laboratory, GR-73100 Chania, Greece.
Anal Chim Acta. 2014 Jan 27;809:25-9. doi: 10.1016/j.aca.2013.11.045. Epub 2013 Nov 28.
In the present work a method for the determination of mercury at trace levels by energy dispersive X-ray fluorescence (EDXRF) is introduced. Mercury ions were concentrated on cation selective membranes that have been prepared on Mylar(®) thin film substrate, immobilized on plastic cups. The produced membranes were immersed in water solutions containing low concentrations of mercury. The membranes were left to equilibrate in 1000 mL of mercury solutions and were analyzed by EDXRF. The effects of various experimental parameters were examined. Minimum detection limits of pg mL(-1) (ppt) (0.069 ng mL(-1) for ASTM Type I water and 0.064 ng mL(-1) for seawater) and good linearity were achieved.
在本研究中，介绍了一种通过能量色散X射线荧光光谱法（EDXRF）测定痕量汞的方法。汞离子被富集在制备于聚酯薄膜（®）薄膜基底上、固定在塑料杯中的阳离子选择性膜上。制备好的膜浸入含有低浓度汞的水溶液中。将膜置于1000 mL汞溶液中达到平衡后，用EDXRF进行分析。研究了各种实验参数的影响。实现了皮克每毫升（ppt）的最低检测限（对于ASTM I型水为0.069纳克每毫升，对于海水为0.064纳克每毫升）以及良好的线性关系。
