论文部分内容阅读
本文存文献的基础上,对锑钼砷杂多酸形成的最佳反应条件作了研究,用AAS法确证了该杂多酸的组成比,并利用萃取分离技术及硼氢化钾压片法使砷与干扰元素分离,采用原子吸收分光光度计间接测定了饮水和人发中的微量砷。测定砷的线性范围为0～30μg,1%吸收灵敏度为10ppb。方法的灵敏度和准确度都较好,用于饮水和人发中砷的分析是可取的。试验部分一仪器与试剂日立180-80型原子吸收分光光度计仪器分析条件: 测定锑波长217.6mm 灯电流12.5mA 狭缝0.4mm 燃烧器高度7.5 空气1.60kg·cm~(-2) 乙炔0.3kg·cm~(-2) 砷化氢发生、吸收装置
Based on the literature, the optimum reaction conditions for the formation of heteropoly acid of antimony molybdenum and arsenic were studied. The composition of the heteropoly acid was confirmed by AAS method. The extraction and separation technology and potassium borohydride tabletting Arsenic and interfering elements were separated, and trace amounts of arsenic in drinking water and human hair were indirectly measured by atomic absorption spectrophotometer. The linear range for the determination of arsenic was 0 to 30 μg and the 1% absorption sensitivity was 10 ppb. The sensitivity and accuracy of the method are good, for the analysis of arsenic in drinking water and human hair is desirable. Experimental part of an instrument and reagents Hitachi 180-80 Atomic Absorption Spectrometer Instrument analysis conditions: determination of anti-wavelength 217.6mm lamp current 12.5mA slit 0.4mm burner height 7.5 air 1.60kg · cm -2 acetylene 0.3kg · Cm ~ (-2) arsine generation, absorption device