火焰原子吸收光谱法测定甜菜块根中铜、锌含量  

Determination of zinc and copper in beet root by flame atomic absorption spectrometry

作　　者：赵丽玲[1] 李慧洁[1] 张福顺[2] 

机构地区：[1]黑龙江大学农业资源与环境学院,黑龙江哈尔滨150080 [2]农业部甜菜品质监督检验测试中心,黑龙江哈尔滨150080

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)

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.

关 键 词：微波消解 火焰原子吸收光谱法 甜菜块根 锌 铜 

分 类 号：S566.3[农业科学—作物学]