| 光度法测定低含量有机硫化合物 |
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| 引用本文： | 夏宗凤,徐焕志,吴培,邓红叶.光度法测定低含量有机硫化合物[J].中国海洋大学学报(自然科学版),1994(4). |
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| 作者姓名： | 夏宗凤 徐焕志 吴培 邓红叶 |
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| 摘 要： | 提出用氧瓶燃烧－光度法来测定有机物中硫含量的定量分析方法，在低硫酸根浓度范围内（４～２５ｍｇ／ｌ），在浓碱条件下ＭＴＢ（甲基百里酚蓝）的吸光度与硫酸根浓度在４６０ｎｍ波长处呈正相关，而在６００ｎｍ（或６１０ｎｍ）处Ｂａ－ＭＴＢ络合物的吸光度与硫酸根浓度呈负相关。该方法标准偏差低于０．５ｍｇ，／ｌ．变异系数低于３％，回收率为９５－１０７％。
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| 关 键 词： | 氧瓶燃烧 甲基百里酚蓝（MTB） 光度法 |
STUDY ON SPECTROPHOTOMETRY METHOD FOR DETERMINATION OF SULFUR CONTENT IN ORGANIC COMPOUNDS |
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| Xia Zongfeng, Xu Huanzhi, Wu Pei, Deng Hongye.STUDY ON SPECTROPHOTOMETRY METHOD FOR DETERMINATION OF SULFUR CONTENT IN ORGANIC COMPOUNDS[J].Periodical of Ocean University of China,1994(4). |
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| Authors: | Xia Zongfeng Xu Huanzhi Wu Pei Deng Hongye |
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| Institution: | Department of Marine Chemistry |
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| Abstract: | The sulfur in organic compounds was decomposed and turned into SO by oxygen bottle combustion. In alkaline solutions the absorbence of methethymol (MTB) is proportional,to sulfate concentration at 460 nm wavelength but the absorbence of barium-MTB complex is inversely proportional to sulfate concentration at 600nm (or 610 nm) wavelength. The calibration graph is linear over the range 4 to 25 mg/l for sulfate. the standard deviation is less than 0. 5mg/l,The varation coefficient is less than 3%,and the recovery ratio is between 95- 107%. |
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| Keywords: | Oxygen bottle combustion MTB spectrophotometry |
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