非完全消化-GFAAS测定葵花籽中的铅  

Non-Complete Digestive Determination of Lead in Sunflower Seeds with Atomic Sbsorption Spectrometry of Graphite Furnace

作　　者：王文光[1] 范学科[1] 张红娟[1] 李劼[1] 

机构地区：[1]杨凌职业技术学院,陕西杨凌712100

出　　处：《现代科学仪器》2015年第6期127-129,共3页Modern Scientific Instruments

摘　　要：非完全消化法处理葵花籽样品，即用浓HNO3-H2O2在100℃处理葵花籽样品至溶液呈无色透明或略带黄色，自动进样器注入石墨炉原子吸收光谱仪中，测定样品中的铅，方法线性关系良好，相关系数R0．9995，RSD（n=7）在1．75％～4．21％之间，回收率在90．0％～98．6％之间，此方法消化方法简单，快速、回收率、准确度高，结果准确可靠。A transparent pale yellow digestion solution was obtained firstly by using a non-complete digestion method with concentrated nitric acid and hydrogen peroxide at temperatures 100℃ for sunflower seeds sample, graphite furnace atomic spectrometry determination of lead with automatic sampler.The results showed that correlation coefficient R2 is 0.9995,RSD （n=7） is 1.75%-4.21%,recovery rate is 90.0%-98.6%. This method can measure the content of lead in sunflower seed samples quickly and easily.

关 键 词：非完全消化法 石墨炉原子吸收光谱法 铅 

分 类 号：O657.31[理学—分析化学]