浊点萃取-火焰原子吸收光谱法测定某些中药中的铜含量  

Determination of copper in Chinese herb medicine samples by cloud point extraction-flame atomic absorption spectrometry

作　　者：胡艳[1] 贾文平[2] 

机构地区：[1]成都纺织高等专科学校染化系,四川成都611731 [2]台州学院化学系,浙江临海317000

出　　处：《化学研究与应用》2010年第5期648-651,共4页Chemical Research and Application

摘　　要：A cloud point extraction-flame atomic absorption spectrometric method for determination of copper in Chinese herb medicine samples was developed,using dithizone as complexing agent and Triton X-114 as surfactant.The experimental conditions,including sample pH,the concentration of dithizone,the concentration of Triton X-114,equilibrium temperature and time,were investigated in detail.Under the optimized conditions,detection limit of 0.9 μg/L and enrichment factor of 18 were achieved for copper determination with sample consumption of 10 mL.The proposed method was successfully applied to analyze copper content in Chinese herb medicine samples,with analytical results in good agreement with those obtained by graphite furnace atomic spectrometry.A cloud point extraction-flame atomic absorption spectrometric method for determination of copper in Chinese herb medicine samples was developed,using dithizone as complexing agent and Triton X-114 as surfactant.The experimental conditions,including sample pH,the concentration of dithizone,the concentration of Triton X-114,equilibrium temperature and time,were investigated in detail.Under the optimized conditions,detection limit of 0.9 μg/L and enrichment factor of 18 were achieved for copper determination with sample consumption of 10 mL.The proposed method was successfully applied to analyze copper content in Chinese herb medicine samples,with analytical results in good agreement with those obtained by graphite furnace atomic spectrometry.

关 键 词：浊点萃取 火焰原子吸收 双硫腙 铜 中药 

分 类 号：O657.31[理学—分析化学]