悬浮液进样-火焰原子吸收光谱法测定云冈石窟降尘中的锰

• 作 者: 刘月成 王尚芝 石云龙 李海 马桂荣
• 机 构: 山西大同大学化学与化工学院,山西大同大学物理与电子信息科学学院,
• 出 处: 化学试剂
• 发表日期: 2010年05期
• 关键词: 悬浮液进样 火焰原子吸收光谱法 云冈石窟 降尘 锰

把降尘样品干燥磨碎并过200目筛后悬浮于0.15%琼脂胶体中制成悬浮液,用火焰原子吸收光谱法成功测定了云冈石窟降尘中锰元素的含量。对悬浮剂进行了选择,考察了共存离子的影响。在优化条件下测定锰的线性回归方程为A=2.9366c(μg/mL)-0.0075(r=0.9982),精密度为3.56%,检出限为0.0012μg/mL,回收率在101.9%～103.5%之间,方法简便、快速、无污染、无被测元素损失。

The dusting samples were ground dry and passed through a 200 mesh sieve and suspended in 0.15% agar to make a suspension. The content of manganese in the dustfall of Yungang Grottoes was determined by flame atomic absorption spectrometry. The suspending agent was chosen to examine the effect of coexisting ions. The linear regression equation for the determination of manganese under optimized conditions was A = 2.9366c (μg / mL) -0.0075 (r = 0.9982), the precision was 3.56%, the detection limit was 0.0012μg / mL and the recovery was 101.9% -103.5 %, The method is simple, fast, non-polluting, no loss of the measured elements.