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X‐ray fluorescence analysis of trace metals in environmental water using preconcentration with an iminodiacetate extraction disk
Author(s) -
Abe Wataru,
Isaka Satoshi,
Koike Yuya,
Nakano Kazuhiko,
Fujita Kazuhiro,
Nakamura Toshihiro
Publication year - 2006
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.892
Subject(s) - tap water , analytical chemistry (journal) , extraction (chemistry) , calibration curve , atomic absorption spectroscopy , fluorescence , chemistry , detection limit , x ray fluorescence , trace amounts , fluorescence spectrometry , materials science , nuclear chemistry , environmental chemistry , chromatography , environmental engineering , environmental science , physics , pathology , medicine , alternative medicine , quantum mechanics
A simple and convenient x‐ray fluorescence analysis procedure for trace amounts of Mn, Fe, Co, Ni, Cu, Zn, Cd, Hg and Pb in water was developed using preconcentration with an iminodiacetate extraction disk (IED). The IED was coated on both faces with commercially available laminate film to prevent x‐ray damage to the IED by strong x‐irradiation (4 kW; 50 kV, 80 mA) of the wavelength‐dispersive x‐ray fluorescence spectrometer. Lamination of the IED prolongs its life from 7 to about 200 min at 4 kW irradiation while negligibly decreasing the x‐ray fluorescence. Lowering the power of primary x‐rays to less than 1.5 kW compensated for the Hg evaporation. Linear calibration curves were obtained over the range 500 µg–5 mg for Mn, Fe, Co, Ni, Cu, Zn, Cd, Hg and Pb. Detection limits corresponding to three times the standard deviation of the blank intensity were 0.1–0.4 µg for Mn, Co and Ni, 0.5–0.8 µg for Fe, Cu, Zn and Pb and 7 µg for Cd. A spike test for 10 µg of eight analytes, excluding Mn, showed good recoveries (90–100%) for city water and rainwater. Analytical results for municipal tap water and rainwater agreed well with values obtained using atomic absorption spectrometry. Copyright © 2006 John Wiley & Sons, Ltd.

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