摘要
研究了采用流动注射技术进行痕量铋的离子交换分离富集 ,在 0 2mol/LHCl溶液中 ,Bi3 + 与Cl- 形成阴离子 ,被离子交换树脂交换富集 ,用 0 2mol/L硝酸 -1 2 %柠檬酸溶液洗脱 ,火焰原子吸收光谱法测定。经分离后 ,铋的测定灵敏度可提高数倍 ,大量共存离子不干扰铋的测定。方法用于钢铁及合金中微量铋的测定 ,结果令人满意。
A method for the determination of trace bismuth by FAAS affer separation and preconcentration with flow injection ion exchange was investigated In the medium of 0 2mol/L hydrochloric acid,Bi 3+ reacts with Cl - to form a anion complex which is then adsorbed on the column of alkali anion exchange resin The anion complex is desorbed from the column with solution of 0 2mol/L HNO 3-1 2% citric acid and transfered into a flask for FAAS determination The bismuth can be enriched for several times The method has been applied to the determination of trace bismuth in metal and alloy samples with satisfactory results
出处
《冶金分析》
CAS
CSCD
北大核心
2002年第3期27-28,共2页
Metallurgical Analysis
