摘要
目的：建立一个简便超高灵敏的发样汞测定方法。方法：以溴化物和罗丹明B为显色剂与汞形成离子缔合物离心光度法测定痕量汞。结果：该法线性范围0.001～0.10μgHg（Ⅱ）／10ml，摩尔吸光系数ε560＝7.46×107L·cm-1·mol-1，CV：2.1～2.6％，回收率94～102％。结论：该法灵敏度好，选择性高，适于发样中痕量汞的分析。
Objective To establish a simple highly sensitive method for the determination of mercury in hair.Methods Trace mercury was measured by centrifugation spectrophotometry with bromide and rhiodamine B as colour reagents to form ionic associate complex. Results The linearity was 0.001-0.10μg Hg(Ⅱ)/10mL, the absorptivity 7.47 ×107L·cm -1·mol -1at 560nm, CV:2.1%-2.6%, the rate of recovery 94.0%-102%. Conclusions The sensitivity and selectivity of this method are good. The method is suitable for the analysis of trace mercury in hair.
出处
《咸宁医学院学报》
1998年第2期96-98,共3页
Journal of Xianning Medical College
关键词
汞
溴化物
罗丹明B
分光光度法
mercury
bromide
rhodamine B
spectrophotomery
