ICP-OES检测单质硼粉中的铝镁铁杂质

硼为非金属元素,是缺电子原子,可以形成缺电子化合物.硼的熔点为2303K,沸点4203K;硼的最外层有三个电子只能形成+3价的化合物,成键时进行sp2轨道杂化形成共价键,其化学性质不够活波.单质硼主要用来制造硼钢,硼钢用作原子反应堆的挖制棒.单质硼主要用钠、镁或铝等活泼金属在高温下还原氧化硼制得,会有铝、镁、铁等杂质的引入.根据工作经验采用ICP-OES检测硼粉中的铝镁铁杂质,这种检测方法的优点是灵敏度高,分析速度快,准确度高、选择性好、应用范围广等.文章对实验的前处理、建标、检测、数据处理等进行阐述和说明.

Boron is a non-metallic element and is an electron-deficient atom, which can form electron-deficient compounds. The melting point of boron is 2303K and the boiling point is 4203K. Three electrons in the outermost layer of boron can only form +3 valence compound. When bonding, the sp2 orbital hybrid forms covalent bond, and its chemical property is not enough to live wave. Boron is mainly used to make boron steel, and boron steel is used as the digging rod of atomic reactor. Boron is mainly prepared by reduction of boron oxide at high temperature by active metals such as sodium, magnesium or aluminum, with the introduction of impurities such as aluminum, magnesium and iron. According to the working experience, ICP-OES is used to detect aluminum, magnesium and iron impurities in boron powder. This method has the advantages of high sensitivity, fast analysis speed, high accuracy, good selectivity, and wide range of application. In this paper, the pre-processing, standard establishment, detection and data processing of the experiment are described and explained.