微波消解–ICP–AES法测定罗布麻叶中16种微量元素  

Determination of 16 Trace Elements in the Leaves of Apocynum Venetum by Microwave Digestion–ICP–AES method

作　　者：吴丽苹 曾宪录[2] 施煜 钟艳梅[2] Wu Liping;Zeng Xianlu;Shi Yu;Zhong Yanmei(Guangdong Shantou Institute of Quality and Metrology Supervision Testing, Shantou　515041, China;School of Life Sciences, Jiaying University, Meizhou　514015, China)

机构地区：[1]广东省汕头市质量计量监督检测所,广东汕头515041 [2]嘉应学院生命科学学院,广东梅州514015

出　　处：《化学分析计量》2017年第3期46-49,共4页Chemical Analysis And Meterage

基　　金：广东省科技计划项目(2016A020210139)

摘　　要：建立微波消解–ICP–AES法测定罗布麻叶中Na,Ca,Mg,Fe,Al,P,Mn,Ni,Cu,Zn,Ti,Se,Ba,Pb,Sr,Cd 16种微量元素含量的方法。以HNO_3–H_2O_2–HF溶液(6∶4∶1)为消解体系,样品经微波消解后,用ICP–AES法对罗布麻叶中16种元素含量进行测定。各元素的质量浓度在0.01~1.00 mg/L范围内与光谱强度呈良好的线性关系,线性相关系数r>0.999,检出限在0.000 5~0.008 0 mg/kg之间。加标回收率为87.56%~101.47%,测定结果的相对标准偏差为1.2%~3.42%(n=6)。该方法操作简单,准确度好,灵敏度高,可用于罗布麻叶中微量元素分析。A method for the determination of16elements content in the leaves of Apocynum Venetum by microwave digestion and ICP-AES was developed,including Na,Mg,Ca,Fe,Al,P,Mn,Ni,Cu,Zn,Ti,Se,Ba,Pb,Sr,Cd.The samples were pretreated by using vacuum microwave digestion in HNO3-H2O2-HF(6∶4∶1)solution system,then16elements content in the leaves of Apocynum Venetum were analyzed.The mass concentration of every elements had good linear relationship with the spectral intensity in the range of0.01-1.00mg/L,and the correlation coefficients were more than0.999,the detection limit ranged from0.0005mg/kg to0.0080mg/kg.The recoveries of standard addtion were87.56%-101.47%,and the relative standard deviations of determination results ranged from1.20%to3.42%(n=6).The method has the advantages of simple operation,high accuracy and sensitivity,and it can be used for the analysis of trace elements in the leaves of Apocynum Venetum.

关 键 词：微波消解 ICP–AES 罗布麻叶 微量元素 

分 类 号：O657.3[理学—分析化学]