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测定钢铁及合金中较高含量的硒.国家(?)(?)(?)(?)采用品酸胫胺-碘量法.而对于钢中原量硒的测定.国 家(?)(?)尚(?)建立方法,(?)(?)业标准大都采用(?)剂(?)取吸光光度法如:(?)氨基联苯胺-甲苯萃取吸光(?)(?)(?)或2.3(?)氨基萘(?)氯甲烷萃取吸光光度法(?)(?)与采用氢化物分离原子吸收光谱法(?)测定我们根据硒在盐酸(?)夜中容易被还原剂还原为(?)素状态析出的特性.配以适当的吸附剂吸附元素硒,息(?)使具与基体元素分离.然后(?)ICP AES法进行测定(?)(?)法已经参与(?)(?)国家级高温合金(?)(?)标准(?)中(?)量硒的定值工作.所得数据与参(?)定值工作的各(?)数据的平均值吻合本方法最低检出限量为(?)(?)(?)
Determination of selenium in steel and alloys at higher levels. National (?) (?) (?) Using tartaric acid product - iodometric method for the determination of the amount of selenium in steel. (?) (?) Most of the industry standards using (?) Agent (?) Absorbance spectrophotometry such as:? Aminobenzidine - toluene extraction absorption? 2.3 (?) Aminonaphthalene (?) Methyl chloride extraction spectrophotometry (?) (?) And the use of hydride generation atomic absorption spectrometry (?) Determination of selenium in the hydrochloric acid (?) ICP AES method (?) (?) Method has been involved (?)? With the state of precipitation characteristics, with appropriate adsorbent element adsorption of selenium, (?) (?) Standard (?) Selenium (?) Selenium value of the work. The data obtained and the reference value of the work (?) Average of the data in line with this method The minimum detection limit is (?) (?) (?)