摘要
采用直流辉光发电发射光谱法对电工钢中15种元素的含量进行测定。以铁为内标元素,确定实验条件为:激发电压1200 V,激发电流50 mA,预溅射时间45 s,积分时间10 s。15种元素测定结果的相对标准偏差小于2.0%(n=11),方法的检出限小于3μg/g,各元素的测定结果与标准物质的认定值吻合。
The content of 15 kind of elements in electrical steel was determined by DC glow discharge optical emission spec- trometry, Iron was used as internal standard element, optimum conditions were found as follow： discharge of voltage 1200 V, discharge of cun＇ent 50 mA, preburn time of 45 s and integrating time of 10 s. The relative standard deviations（RSD） of 15 elements determina- tion results were below 2.0% （ n = 11 ）. The detection limit of this method was less than 3 μg/g. The determination values of all ele- ments were in good agreement with the certified values.
出处
《化学分析计量》
CAS
2010年第6期39-41,共3页
Chemical Analysis And Meterage
关键词
直流辉光放电发射光谱法
电工钢
多元素测定
direct currentt glow discharge optical emission spectrometry, electrical steel, determination of nmhi - elements
