氟化电热蒸发－等离子体原子发射光谱直接测定生物试样中铜的研究  

The Study on Direct Determination ofCopper in Biological Sample by Electrother-mal Vaporization-Inductively Coupled Plas-ma-Atomic Emission Spectrometry with Flu-orinating Vaporization for Sample Introduc-tion

作　　者：秦永超[1] 江祖成[1] 曾云鹗[1] 

机构地区：[1]武汉大学化学系

出　　处：《分析试验室》1995年第4期48-51,共4页Chinese Journal of Analysis Laboratory

基　　金：国家自然科学基金;国家教委博士点基金

摘　　要：本文采用聚四氟乙烯（ＰＴＦＥ）为氟化剂，以悬浮体制样，ＥＴＶ－ＩＣＰ－ＡＥＳ直接测定生物固体粉末试样中的中等挥发性元素铜。详细研究了试样粒度对分析信号强度的影响，考察了铜在该技术中的蒸发行为以及影响氟化蒸发的主要因素，在优化的实验条件下，本法测定铜的检出限为４２ｐｇ，相对标准偏差为４．５％（ｎ＝１０，Ｃｕ浓度为０．２μｇ／ｍＬ），本法简单、快速、所得结果与参考值吻合很好。new,simple and rapid method for thedirect determination of Cu in biological pow-der samples by fluorination electrothermalvaporization-ICP-AES technique has beendeveloped.The effect of particle size on ana-lytical signal intensity was studied in detail.The vaporization behavior of copper and themain factors affecting the fluorinating vapor-ization were examined.Under optimal ex-perimental conditions the absolute detectionlimit of Cu is 42 pg and the relative standarddeviation is 4.5%,The proposed methodhas been applied to the analysis ofGBW08505 and CRM281 biological samplesand the results were in good agreement withthe reference results.

关 键 词：等离子体光谱 PTFE 生物试样 铜 原子发射光谱 

分 类 号：O614.121[理学—无机化学] O657.31[理学—化学]