| 管式炉直接燃烧-红外吸收光谱法同时测定硅铁中碳和硫量 |
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| 引用本文： | 武素茹,李权斌,王虹,姚传刚,侯书建,孟凯,王振坤.管式炉直接燃烧-红外吸收光谱法同时测定硅铁中碳和硫量[J].理化检验(化学分册),2012(7):820-822. |
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| 作者姓名： | 武素茹 李权斌 王虹 姚传刚 侯书建 孟凯 王振坤 |
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| 作者单位： | 天津出入境检验检疫局 |
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| 摘 要： | 提出了管式炉直接燃烧-红外吸收光谱法测定硅铁中碳、硫含量的方法。对试验条件进行了优化,选择氧化铜(1.5g)为助熔剂,样品称样量为0.2～0.3g,碳和硫的分析时间为60s。方法的检出限为硫0.001%,碳0.004%。分析了标准样品(BH1917-1)进行准确度及精密度试验,测定结果与认定值相符,碳和硫测定值的相对标准偏差(n=10)分别小于4%和8%。
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| 关 键 词： | 红外吸收光谱法 硅铁 碳 硫 |
Direct Combustion with Resistance-type Tubular Furnace-IR Absorption Spectrometric Determination of Carbon and Sulfur in Ferrosilicon |
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| WU Su-ru,LI Quan-bin,WANG Hong,YAO Chuan-gang, HOU Shu-jian,MENG Kai,WANG Zhen-kun.Direct Combustion with Resistance-type Tubular Furnace-IR Absorption Spectrometric Determination of Carbon and Sulfur in Ferrosilicon[J].Physical Testing and Chemical Analysis Part B:Chemical Analgsis,2012(7):820-822. |
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| Authors: | WU Su-ru LI Quan-bin WANG Hong YAO Chuan-gang HOU Shu-jian MENG Kai WANG Zhen-kun |
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| Institution: | (Tianjin Entry-Exit Inspection and Quarantine Bureau,Tianjin 300456,China) |
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| Abstract: | A method for the determination of carbon and sulfur in ferrosilicon by IR absorption spectrometry with direct combustion of sample in resistance type tubular furnace was proposed.The optimum experimental conditions were found as follow: ① amount of CuO(as flux): 1.5 g;② amount of sample: 0.2-0.3 g;③ analytical time for carbon and sulfur: 60 s.Values of detection limits of the method found were 0.001% for sulfur and 0.004 % for carbon.Test for accuracy and precision was made by analyzing the standard sample BH1917-1,giving results in consistency with the standard values.Values of RSD′s(n=10) of carbon and sulfur found were less than 4% and 8% respectively. |
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| Keywords: | IR absorption spectrometry Ferrosilicon Carbon Sulfur |
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