电感耦合等离子体原子发射光谱法测定钛合金中硼

Determination of boron in titanium alloy by inductively coupled plasma atomic emission spectrometry

提出了一种快速测定钛合金中B的电感耦合等离子体原子发射光谱（ICP-AES）法,优化了仪器参数,确定了最佳的分析条件。试样经硫酸和硝酸溶解后,选择B 208.957光谱线作为硼的分析线,试液直接用ICP-AES法测定,基体和共存元素产生的光谱干扰采用基体匹配和对背景发射位以2点校正的方法进行消除,硼的检出限为0.000 72μg/mL。对一钛合金样品进行10次测定,相对标准偏差小于1%,加标回收率在97%~130%之间,本法的分析结果与分光光度法一致。

A rapid determination method of boron in titanium alloy by inductively coupled plasma atomic emission spectrometry（ICP-AES） was proposed.The instrumental parameters were optimized to obtain the optimal analytical conditions.The samples were dissolved in sulfuric acid and nitric acid.The solution was directly determined by ICP-AES using B 208.957 nm as the analytical line for boron.The spectral interference caused by matrix and coexisting elements were eliminated by matrix matching and two-point correction of background emission site.The detection limit of boron was 0.000 72 μg/mL.One titanium alloy sample was determined for 10 times.The relative standard deviation（RSD） was less than 1 %,and the recoveries of standard addition were 97 %-130 %.The determination results of this method were consistent with those obtained by spectrophotometry.