摘要
采用微波消解——火焰原子吸收光谱法，对编号为GBW07604杨树叶、GBW07601人发的质控样及10个甜菜块根样品进行重金属铜、锌的检测，并且对这两种金属元素的最低检出限、精确度、准确度及样品差异进行分析。结果表明，应用本方法测定的铜、锌的最低检出限分别为0．0056mg／kg、0．0298mg／kg；铜在甜菜块根中的含量较低，在浓度范围0-0．8μg／mL与其吸光度呈良好的线性关系，线性方程为y=0．14579x＋0．0006，相关系数为0．9999。锌在浓度范围0-0．5μg／mL，与其吸光度也呈良好的线性关系，线性方程为Y=0．07157x＋0．0002，相关系数为0．9997。实验表明，本方法及仪器条件适合甜菜样品中铜、锌的检测。
Copper and zinc in ten samples of beet root and quality control samples （No. GBW07604,GBW07601 ）, were determined by microwave - digestion flame atomic absorption spectrometry. The linear range, MDL, accuracy and sample＇s diversity also analyszed.The results showed： at this test condition, the detection limit of copper was 0.0056 mg/kg and zinc was 0.0298 mg/kg, and copper was little in beet root. The results showed that the significant linear relations between copper and zinc concentration. The absorbency in the range of copper 0 - 0.8 μg/mL , it submit good linear relation with its absorbance, the linear equation is y = 0. 14579x ＋ 0.0006, coefficient r = 0.9999, as well as the zinc density range in 0 -0.5 μg/mL, it also submit good linear relation with its absorbance, linear equation is y = 0.07157x ＋ 0.0002, coefficient r = 0.9997.
出处
《中国甜菜糖业》
2008年第1期8-11,共4页
China Beet & Sugar
基金
黑龙江省教育厅资助项目(11511293)
关键词
微波消解
火焰原子吸收光谱法
甜菜块根
锌
铜
microwave digestion
flame atomic absorption spectrometry
beet root
zinc
copper
