Polychromatic excitation improves detection limits in total reflection X-ray fluorescence analysis compared with monochromatic excitation.
Detection limits obtained by a portable total reflection X-ray fluorescence (TXRF) spectrometer with or without a monochromator are compared. A 1 W X-ray tube (tube voltage: 20 kV) is used in this spectrometer. Polychromatic excitation improves the detection limits in TXRF analysis with the low power X-ray tube compared with monochromatic excitation. A detection limit of 26 pg is achieved for Co when using the weak polychromatic X-rays.
Materials Fabrication Laboratory, RIKEN (The Institute of Physical and Chemical Research), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. kunimura@riken.jp
Shinsuke
S
Kunimura
Jun
J
Kawai
D013052:Spectrometry, X-Ray Emission / Q000295:instrumentation / Q000379:methods*; D014965:X-Rays