火焰原子吸收光谱法测定氯化物型卤水中微量铷
FAAS Determination of Microamounts of Rubidium in Chloride Bittern
摘 要
对火焰原子吸收光谱法测定氯化物型卤水中微量铷时共存离子,包括钾、钠、钙、镁等的干扰作了试验,并根据试验结果对文献报道的火焰原子吸收光谱法测定简单卤水中铷的条件作了改进.试验表明:当在制作标准曲线时加入与试样中含量相近的上述离子,可抵消其干扰.按此条件,毋需任何预处理,即可直接测定铷.应用此方法分析了两件已知样品中铷量,所得结果与已知值相符.以此样品为基础加入铷标准溶液作回收试验,测得回收率在92%~108%之间.
铷
氯化物型卤水
Flame atomic absorption spectrometry
Rubidium
Chloride bittern
Abstract
In the FAAS determination of microamounts of rubidium in chloride bittern,interferences of co-existing ions,including K+,Na+,Ca2+ and Mg2+,were tested,and on the basis of the results obtained,the analytical conditions for FAAS determination of rubidium given in literature were modified.It was found that when definite amounts of the co-existing ions very close to the amounts present in the sample were added to the testing solutions in the preparation of standard curve of rubidium,their interferences were eliminated by compensation.Thus,rebidium in bittern was determined directly without any pretreatment.The proposed method was applied to determine rubidium in 2 known bittern samples,giving results in consistency with the known values,and giving values of recovery in the range of 92%-108%.
中图分类号 O657.31
所属栏目 工作简报
基金项目 中国科学院2005年度“西部之光”联合学者计划项目“盐湖钾肥生产过程资源损失研究”(科发人教字[2005]404号)及中国科学院青海盐湖研究所创新方向性项目“察尔汗盐湖铷化学动态研究”(2005017)支持.
收稿日期 2006/12/28
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备注叶秀深(1981-),男,山东聊城人,博士研究生,研究方向为卤水中铷铯金属的分析与分离.
引用该论文: YE Xiu-shen,NAI Xue-ying,LI Hai-jun,DONG Ya-ping,LI Ya-hong,LI Wu. FAAS Determination of Microamounts of Rubidium in Chloride Bittern[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2008, 44(8): 763～764
叶秀深,乃学瑛,李海军,董亚萍,李亚红,李武. 火焰原子吸收光谱法测定氯化物型卤水中微量铷[J]. 理化检验－化学分册, 2008, 44(8): 763～764
被引情况:
【1】黄梓平,韦美静,韩爱霞,曹建芳,付华, "离子色谱法测定盐湖原卤中阳离子",理化检验－化学分册 51, 547-549(2015)
【2】刘建坤,郑荣华,骆宏玉,修连存, "粉末压片-X射线荧光光谱法测定矿石中高含量铷",理化检验－化学分册 50, 1451-1452(2014)
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参考文献
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【2】秦玉楠.新型AmoP/SiO2离子交换剂的制备及应用——从制盐母液中直接提取铯和铷的新方法[J].中国钼业,2001,25(5):19．
【3】Sen Gupta J G.Determination of rubidium,strontium and barium in barite by atomic-absorption spectrometry after dissolution in disodium ethylenediaminetetra-acetate[J].Talanta,1987,34(4):427．
【4】陈晓青,贾莉英.火焰原子吸收光谱法测定铝酸钠溶液中微量铷[J].理化检验-化学分册,2000,36(10):443．
【5】马戈,张景彦,牛刚.火焰原子吸收光谱法测定茶叶中的钾、钠、铷[J].光谱实验室,1999,16(2):147．
【6】张波,向立人.溶剂萃取石墨炉原子吸收光谱法测定盐卤中痕量铷[J].分析化学,1999,27(6):661．
【7】中国科学院青海盐湖研究所分析室.卤水和盐的分析方法[M].2版.北京:科学出版社,1988:224．
【8】樊兴涛,詹秀春,巩爱华.能量色散X射线荧光光谱法测定卤水中痕量溴铷钾[J].岩矿测试,2004,23(1):15．
【9】Ladislau Kékedy-Nagy,Emil A Cordos.Flame atomic emission determination of rubidium in mineral and well waters using methane-air flame as excitation source[J].Talanta, 2000,52(4):645．
【10】Chekalin N V,Marunkov A G,Pavlutskaya V I,et al.Determination of traces of Cs,Li and Rb in rocks by laser enhanced ionization spectrometry without preconcentration[J].Spectrochim Acta Part B,1991,46(5):551．
【11】中国科学院青海盐湖研究所分析室.卤水和盐的分析方法[M].2版.北京:科学出版社,1988:232．
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