...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Indian Journal of Chemistry, Section A. Inorganic, Physical, Theoretical & Analytical >Analysis of cobalt chelate solution with chrome azophenol KS and determination of trace amounts of cobalt in metal samples
【24h】

Analysis of cobalt chelate solution with chrome azophenol KS and determination of trace amounts of cobalt in metal samples

机译：偶氮铬KS试剂分析螯合钴溶液及测定金属样品中痕量钴

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Trace amounts of cobalt have been determined selectively by #beta#-correction spectrophotometry. with chrome azophenol KS (CAKS) at pH 8.5. The Co(II)-CAKS reaction is very selective in the presence of EDTA. The characteristic factors of the chelate formed can be computed more accurately because of the elimination of the interference of the excess CAKS by the updated method of #beta#-correction spectrophotometry. Results show that Co/CAKS = 1.2 in the chelate, its practical molar absorptivity is equal to 2.10 *0 10~4 L.mol~(-1)cm~(-1) at 590 nm and its instability constant is 5.97 * 10~(-13). The method has been applied for analysis of metla samples and the results show that the detection limit of cobalt is 0.01 mg/L and the recovery of cobalt between 93.0 and 106% with the RSDs of less than 4.3%.
机译：痕量的钴已经通过＃beta＃校正分光光度法进行了选择性测定。用pH 8.5的偶氮铬KS（CAKS）铬。在EDTA存在下，Co（II）-CAKS反应具有很高的选择性。由于通过更新的＃beta＃-校正分光光度法消除了多余CAKS的干扰，因此可以更准确地计算出形成的螯合物的特征因子。结果表明，螯合物中Co / CAKS = 1.2，在590 nm处的实际摩尔吸光度等于2.10 * 0 10〜4 L.mol〜（-1）cm〜（-1），不稳定性常数为5.97 * 10 〜（-13）。该方法已用于梅拉样品的分析，结果表明，钴的检出限为0.01 mg / L，钴的回收率在93.0％至106％之间，相对标准偏差小于4.3％。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号