液液萃取电感耦合等离子体光谱法测定碳酸盐岩中的单质硫

建立了碳酸盐岩样品中单质硫的分析方法,此法以正己烷为萃取剂,在180.7nm和182.0nm波长下用电感耦合等离子体光谱法（ICP-AES）测定国家标准物质GBW（E）07108和碳酸盐岩样品。正己烷萃取碳酸盐岩中单质硫的回收率在90%~110%之间;每个样品测定7次,相对标准偏差（RSD）〈5.0%。结果表明,此法满足实验要求,可用于大批量碳酸盐岩样品中单质硫的测定。...

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Bibliographic Details
Published in中国岩溶 Vol. 36; no. 3; pp. 415 - 418
Main Author 全洗强 陶鑫 杜文越 秦愫妮 俞建国
Format Journal Article
LanguageChinese
Published 中国地质科学院岩溶地质研究所/国土资源部、广西岩溶动力学重点实验室,广西桂林,541004 2017
Subjects
单质硫
电感耦合等离子体光谱法
碳酸盐岩
碳酸盐岩
ICP-AES
carbonate rock
单质硫
电感耦合等离子体光谱法
elemental sulfur
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ISSN1001-4810
DOI10.11932/karst2017y20

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Summary:建立了碳酸盐岩样品中单质硫的分析方法,此法以正己烷为萃取剂,在180.7nm和182.0nm波长下用电感耦合等离子体光谱法（ICP-AES）测定国家标准物质GBW（E）07108和碳酸盐岩样品。正己烷萃取碳酸盐岩中单质硫的回收率在90%~110%之间;每个样品测定7次,相对标准偏差（RSD）〈5.0%。结果表明,此法满足实验要求,可用于大批量碳酸盐岩样品中单质硫的测定。
Bibliography:45-1157/P
QUAN Xiqiang, TAO Xin,DU Wenyue, QIN Suni, YU Jianguo （ Institute of Karst Geology, CAGS/Key Laboratory of Karst Dyna mics, MLR＆GZAR,Guilin, Guangxi 541004, China）
Under condition of hypoxia,sulfate sulfur is reduced to sulfide sulfur in the process of carbonate deposition.Part of the sulfide is combined with organic to generate complicated organic sulfur while the majority of sulfide with metal ions to form sulfide precipitation.However,the sulfide precipitation is so unstable that can be converted to a stable pyrite through hydrogen sulfide,iron sulfide polysulfide and ferrous sulfide paths.Under the oxygen-rich condition,the sulfur-oxidizing bacteria will oxidate sulfide into elemental sulfur and the disproportionation of elemental sulfur will lead to the formation of various sulfurs which are stored in carbonate deposition.At present,a variety of methods are available for the measurement of elemental sulfur and its species.Unfortunately,only a few are useful at mg/L levels,which offer the possibil
ISSN:1001-4810
DOI:10.11932/karst2017y20