...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Scientific & Industrial Research >Extractive spectrophotometric determination of nickel (Ⅱ) using 4-methyl 2,3-pentanedione dioxime (H_2MPDDO)
【24h】

Extractive spectrophotometric determination of nickel (Ⅱ) using 4-methyl 2,3-pentanedione dioxime (H_2MPDDO)

机译：4-甲基2,3-戊二酮二肟（H_2MPDDO）萃取光度法测定镍（Ⅱ）

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

A new analytical reagent, 4-methyl 2,3-pentanedione dioxime (H_2MPDDO), is proposed for the extraction and spectrophotometric determination of nickel. H_2MPDDO reacts with nickel (Ⅱ) to give yellow coloured complex, which can be quantitatively extracted into chloroform at pH 9.0. The organic extract shows maximum absorption at 370 nm where absorption due to a similarly prepared reagent blank is negligible. The Beer's law is followed in the concentration range 0.5-10 μg/ml of nickel (Ⅱ). The molar absorptivity and Sandell's sensitivity of Ni (Ⅱ)-(H_2MPDDO)_2 complex are 3.039x10~3 l/mol/cm and 0.0192 μg/ml/cm~2, respectively. The stoichiometry of extracted species was found to be 1:2 (M:L). The proposed method is rapid, sensitive, reproducible and accurate, and has been satisfactorily applied for the determination and separation of nickel in synthetic mixtures and spent catalyst samples.
机译：提出了一种新的分析试剂4-甲基2，3-戊二酮二肟（H_2MPDDO），用于镍的萃取和分光光度法测定。 H_2MPDDO与镍（Ⅱ）反应生成黄色络合物，可在pH 9.0下将其定量萃取到氯仿中。有机提取物在370 nm处显示最大吸收，其中由于类似制备的试剂空白而导致的吸收可忽略不计。镍（Ⅱ）的浓度范围为0.5-10μg/ ml，遵循比尔定律。 Ni（Ⅱ）-（H_2MPDDO）_2配合物的摩尔吸光度和Sandell灵敏度分别为3.039x10〜3 l / mol / cm和0.0192μg/ ml / cm〜2。发现提取物的化学计量比为1：2（M：L）。所提出的方法快速，灵敏，可重现和准确，已成功地用于测定和分离合成混合物和废催化剂样品中的镍。

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