Cloud point extraction-thermospray flame quartz furnace atomic absorption spectrometry for determination of ultratrace cadmium in water and urine
作者： Peng Wu , Yunchang Zhang , Yi Lv , Xiandeng Hou
DOI: 10.1016/J.SAB.2006.10.017
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摘要: Abstract A simple, low cost and highly sensitive method based on cloud point extraction (CPE) for separation/preconcentration thermospray flame quartz furnace atomic absorption spectrometry was proposed the determination of ultratrace cadmium in water urine samples. The analytical procedure involved formation analyte-entrapped surfactant micelles by mixing analyte solution with an ammonium pyrrolidinedithiocarbamate (APDC) a Triton X-114 solution. When temperature system higher than X-114, complex cadmium-PDC entered surfactant-rich phase thus separation from matrix achieved. Under optimal chemical instrumental conditions, limit detection 0.04 μg/L sample volume 10 mL. results samples agreed well those ICP-MS.
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