Automated solid-phase extraction for trace-metal analysis of seawater: sample preparation for total-reflection X-ray fluorescence measurements
作者： Wolfgang Gerwinski , Diether Schmidt
DOI: 10.1016/S0584-8547(98)00163-3
关键词: Silica gel 、 Certified reference materials 、 Seawater 、 Solid phase extraction 、 Extraction (chemistry) 、 Blank 、 X-ray fluorescence 、 Chemistry 、 Sample preparation 、 Analytical chemistry
摘要: Solid-phase chromatography on silica gel columns can be used as a sample preparation technique for seawater, followed by total-reflection X-ray fluorescence analysis (TXRF). An automated extraction system (Zymark AutoTrace SPE Workstation) was studied the of blank solutions, seawater samples and certified reference materials. After replacing some stainless steel parts in system, adequate blanks could obtained to allow samples. Replicate analyses yielded low standard deviations good recoveries Using six-channel model user-defined software, time needed complete analytical run about 100 min.
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