Speaker
Yan Zhu
(Shanghai Jiao Tong University)
Description
This study established an optimized protocol employing quadrupole inductively coupled plasma mass spectrometry (ICP-QMS) with internal standard calibration to achieve direct ultratrace ²³⁸U and ²³²Th radionuclides quantification. Cross-validation with high-purity germanium gamma spectroscopy (HPGe) confirmed the method’s reliability. Systematic ICP-QMS screening of industrial materials established the current baseline radioactivity in stainless steel and titanium metals. Through UTEVA resin enrichment, ²³²Th and ²³⁸U in copper were quantified at μBq/kg-level radioactivity. Impurity profiling across smelting stages demonstrated vacuum electron beam smelting's exceptional purification efficacy.
Author
Yan Zhu
(Shanghai Jiao Tong University)
Co-author
涛 张
(上海交通大学)
