火焰原子吸收光谱法间接测定钢中硼量
Indirect Determination of Boron in Steel by Flame Atomic Absorption Spectrometry
摘 要
在弱酸介质中,硼、苯羟乙酸和[Fe(Phen)3]2+(phen:邻二氮菲)缔合生成具有较大疏水基团的化合物,用1,2-二氯乙烷萃取,再用去离子水反萃取,再用火焰原子吸收光谱法测定水相中铁,由此间接测定硼的含量.硼的质量浓度在0.05~3.24 mg·L-1范围内呈线性,方法检出限(3S/N)为0.036 mg·L-1.应用此方法测定了硼钢标准样品中硼含量,测得结果与已知值相符.
硼
钢
萃取
FAAS
Boron
Steel
Extraction
Abstract
A method for indirect determination of boron in steel was studied and reported in this paper.In a weakly acidic medium,boron was reacted with phenylhydroxyacetic acid and [Fe(phen3]2+ to form a stable hydrophobic compound which was extracted with dichloromethane.Boron was determined indirectly by flame atomic absorption spectrometry via iron determination.Linear relationship between absorbance and boron concentration ranged in 0.05-3.24 mg·L-1 was obtained.Detection limit of the method was 0.036 mg·L-1.The proposed method was applied to the determination of boron in steel with results in consistency with the known values.
中图分类号 O657.31
所属栏目 工作简报
基金项目 广西大学科研基金资助项目(X051108)
收稿日期 2007/6/21
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备注陆建平(1955-),男,江苏人,博士,副教授,主要从事色谱和光谱分析.
引用该论文: LU Jian-ping,PENG Jian. Indirect Determination of Boron in Steel by Flame Atomic Absorption Spectrometry[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2008, 44(12): 1204～1205
陆建平,彭剑. 火焰原子吸收光谱法间接测定钢中硼量[J]. 理化检验－化学分册, 2008, 44(12): 1204～1205
被引情况:
【1】周示玉,蒋健,周国俊,胡宝祥,李祖光, "柱前衍生-高效液相色谱法测定香精香料中硼酸和硼砂",理化检验－化学分册 48, 219-221(2012)
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参考文献
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【2】Takeshi Yamane,Yusuke Kouzaka,Mie Hirakawa.Continuous flow system for the determination of trace boron in iron and steel utilizing in-line preconcentration/separation by Sephadex column coupled with fluorimetric detection[J].Talanta,2001,55:387-388．
【3】Sah R N,Brown P H.Boron determination-A review of analytical methods[J].Microchemical Journal,1997,56(3):294-296．
【4】杨红霞,李 冰.硼的测定方法[J].化学通报,2005,68(6):1-4．
【5】蔡玉钦,朱庆存.火焰原子吸收光谱法间接测定硼[J].分析化学,1994,22(7):752．
【6】王清江,张文,宗俊,等.火焰原子吸收分光光度法间接测定海水镁沙中的硼[J].华东师范大学学报,2001,47(4):71-72．
【7】Kustin K,Pizer R.Temperature jump study of the rate,and mechanism of the boric acid-tartaric acid complexation[J].J Amer Chem Soc,1969,91(2):317-322．
【8】顾学民,龚毅生,臧希文,等.无机化学丛书:第二卷[M].北京:科学出版社,1998:369-370．
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