管式炉燃烧-红外吸收光谱法快速测定含钒液体中硫量  

Rapid Determination of Sulfur in Liquid Sample Containing Vanadium by Combustion with Resistance-Type Tubular Furnace-IR Absorption Spectrometry

作　　者：刘凤君[1] 

机构地区：[1]攀钢集团研究院有限公司,攀枝花617000

出　　处：《理化检验（化学分册）》2013年第11期1339-1340,1348,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：提出了管式炉燃烧-红外吸收光谱法快速测定含钒液体试样中硫含量的方法。优化试验条件如下：①选择氮气为载气；②炉温为l250℃；③三氧化钨（0．3g）为助熔剂；④样品取样量为100μL。硫的质量浓度分别在0．10～2．00，2．00～16．00g·L-1 间与吸收值呈线性关系。方法用于含钒液体试样中硫含量的测定，结果与重量法分析结果相符。测定值的相对标准偏差（n=8）在0．73％～2．0％之间。A method for the rapid determination of sulfur in liquid sample containing vanadium by IR absorption spectrometry with combustion of sample in resistance-type tubular furnace was proposed. The optimum experimental conditions were found as follow： ① carrier gas： Ne ;② temperature of furnace： 1 250 C ; ③ amount of WO3 （as flux） ： 0.3 g; ④ amount of sample： 100 μL. Linear relationship between values of absorption and mass concentration of sulfur was kept in the range of 0. 10-2.00 and 2.00--16.00 g . L-1. The proposed method was applied to the determination of sulfur in liquid sample containing vanadium, giving results in consistency with the values obtained by gravimetric method. Values of RSD＇s （n=8） were found in the range of 0.73%-2.0%.

关 键 词：红外吸收光谱法 含钒液体 硫 

分 类 号：O657.33[理学—分析化学]