摘要
采用高频燃烧红外吸收光谱法测定三水型铝土矿中的硫含量。采用750℃灼烧20min处理铝土矿样品，加入纯铁1．4g，钨锡助熔剂1．5g作为混合助熔剂。硫的线性范围为0．319／6～1．0％，加标回收率在99．1％～101％之间，测定值的相对标准偏差（ｎ＝7）在0．50％～０．85％之间。
High frequency combustion infrared-adsorption spectroscopy was applied to the determination of sulfur in gibbsite-type bauxite. The bauxite sample was pretreated by ignition under 750 ℃ for 20 min. 1.4 g of pure iron and 1.5 g of mixed flux （tungsten and tin） were added. Linearity range of sulfur was found in the range of 0. 31%--1.0 %. Values of recovery found by standard addition method were in the range of 99. 1%- 101%, and values of RSD＇s （n=7） in the range of 0. 50%--0. 85M.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2015年第8期1087-1089,共3页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
质检公益性行业科研专项计划(201310065)
国家质检总局科研计划项目(2013IK013)
关键词
红外吸收光谱法
高频燃烧
三水型铝土矿
硫
Infrared adsorption spectrometry
High frequency combustion
Gibbsite-type bauxite
Sulfur
