The use of a portable total reflection X-ray fluorescence spectrometer for trace element determination in freshwater microcrustaceans (Daphnia)
- 作者：Mages ; Margarete ; Woelfl ; Stefan ; Ó ; vá ; ri ; Mihá ; ly ; v. Tü ; mpling Jr ; Wolf ; et. al.
- 关键词：Trace element analysis ; Daphnia ; Zooplankton ; Total reflection X-ray fluorescence ; Portable TXRF ; Field experiments
- 刊名：Spectrochimica Acta Part B ; Atomic Spectroscopy
- 出版年：2004
- 期刊代码：101_05848547
- 类别：ch
- 出版时间：August 31, 2004
- 卷：59
- 期：8
- 页码：1265-1272
- 文件大小：599 K
摘要
The suitability of a newly developed, portable total reflection X-ray fluorescence (TXRF) spectrometer (PicoTAX, Roentec, Berlin, Germany) to analyze trace elements in biological material was tested and compared with a stationary instrument (Spectrometer 8030 C, FEI, Munich, Germany). For that, single freshwater microcrustacean specimens (Daphnia spec.) with dry weights ranging between 1.6 and 18.8 μg individual−1 were prepared according to the dry method and analyzed with both instruments. Additionally, for orientation purposes, freshly collected Daphnia were prepared in field according to the wet method directly on the glass carrier and analyzed using the portable PicoTAX. For method validation, certified reference material (CRM 414, plankton) was analyzed.