摘要
将悬浮液进样技术应用于火焰原子吸收光谱法成功地测定了聚乙烯中的镁、铜。将样品粉碎、过筛并悬浮在乙醇 TritonX 1 0 0溶液中制成悬浮液。通过在与样品悬浮液等体积的空白溶液中加入适量的乙二醇 ,可配制成与试液粘度一致的参比溶液。以Sr2 +作为镁的释放剂 ,以正丁醇为增敏试剂 ,用工作曲线法测定。对悬浮剂的选择、干扰、线性范围及检出限进行了考察 ,方法简便、快速。
The suspention sampling technique was appled in flame atomic absorption spectrometry to successfully determine magnesium and copper in polyethylene. Polyethylene sample was crushed,sifted and then suspended in ethyl alcohol-Triton X-100 solution. The reference solution having the same viscosity with the test solution was prepared by adding an appropriate amount of ethylene glycol in equal volume of blank solution with the test solution. Sr 2+ was used as releasing agent for magnesium and n-butyl glcohol was used as the enhancement reagent.The working curve method was used for the determination. Choice of suspension agent, interference,linearity range and the detection limit were studied. This method is convenient ,rapid and accurate.=
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
2002年第7期819-821,共3页
Chinese Journal of Analytical Chemistry
