期刊论文

中文

广东微量元素科学

1006-446X

2010

17

9

60-65

10.16755/j.cnki.issn.1006-446x.2010.09.007

本校为第一机构

研究了砷(Ⅴ)-钼酸铵-碘绿体系的共振瑞利散射光谱特性.在硫酸介质中,砷(Ⅴ)与钼酸反应生成砷钼杂多酸大阴离子,其与阳离子染料碘绿结合形成离子缔合配合物,导致体系共振瑞利散射光剧烈增强,据此建立了共振瑞利散射分析法测定砷(Ⅴ)的新方法.方法的线性范围为0.01～0.40 μg/mL,检出限1.5 μg/L.RSD为2.55%、1.86%,样品加标回收率为95.5%～104.3%.该法简便快速,用于测定化妆品中微量砷,结果满意.

The resonnance rayleigh scattering spectra of arsenic（Ⅴ）-molybdate-iodine green was studied.The method was based on the effect of arsenic with molybdate and Iodine Green（IG）in sulphuric acid medium,which resulted in an enhance of resonance rayleigh scattering（RRS）intensity.The increasement of resonance Rayleigh scattering intensity was linear to the concentration of arsenic（Ⅴ）in the range of 0.01~0.40 μg/mL with the detection limit of 1.50 μg/L.It was applied to the determination of a...