摘要
本文设计了一种钨丝电热蒸发进样装置并与ICP-AES联用。考察了蒸发温度、载气流量、蒸发器容积等对分析信号的影响。在最佳工作条件下,得到Mg、Cu、Mn、Cr、Fe、Co、Ni的检出限分别为3.2×10^(-11)、1.63×10^(-10)、5.5×10^(-10)、9.2×10^(-10)、1.2×10^(-9)、1.3×10^(-9)、2.2×10^(-9),RSD低于5％,本法用于大米及饮用酒中痕量Cu,Mn的测定,所得结果与GFAAS法所得结果较好吻合。
A device with tungsten-spiral electrothermal vaporization for sample introduction into inductively coupled plasma-atomic emission spectrometry has been designed. Several influence factors including vaporization voltage, carrier gas flow. rate, the Volume of valporization chamber and the working condition of the instrument were investigated. Under optimal experimental conditions, the detection limits of Ni, Co, Fe, Cr, Mn, Cu, Mg were betwlen the Order of 10^(-9)～10^(-11) g. The relative standard deviation was below 5%.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1992年第8期932-935,共4页
Chinese Journal of Analytical Chemistry
关键词
钨丝
电热蒸发进样
镁
铜
ICP-AES
Tungsten-spiral electrothermal vaporization
Sample introduction
Inductively coupled plasma
Nickel
Cobalt
Iron
Chromium
Manganese
Copper
Magnesium.
