摘要
在富燃性空气-乙炔火焰中,铝对铁的吸光度有增敏作用。基于这一点,研究了以铁为底液,用原子吸收光谱法间接测定铝的条件。结果表明,铝的线性范围为0.000～0.500mg/L,特征质量浓度0.0028mg/L(相当于1%吸收)。本方法用于2,4,6_三氯苯肼中铝的测定,相对标准偏差2.0%,加标回收率96%～105%。
An indirect flame atomic absorption spectroscopic method based on the enhancement of iron abˉsorbance by aluminium in fuel_rich air-acetylene flame was developed for the determination of Al.It was found that the optimum concentration of iron in basic solution was4.0mg/L.Experimental results showed that the linear range of Al was0.000-0.500mg/L with a characteristic concentration of0.0028mg/L.The method has been used for the determination of Al in2,4,6_trichloro_phenylhy drazine with2.0%RSD.The recovery was96%-105%.
出处
《分析测试学报》
CAS
CSCD
北大核心
2005年第3期131-133,共3页
Journal of Instrumental Analysis
基金
浙江省自然科学基金资助项目(M203115)
浙江省分析化学重点扶植学科资助项目(浙教高科200337)
关键词
火焰原子吸收法
铝
三氯苯肼
富燃性火焰
Flame atomic absorption spectrophotometry
Aluminium
Trichloro-phenylhy drazine
Fuel- rich flame
