• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Utility of solid phase extraction for UV-visible spectrophotometric determination of gallium in environmental and biological samples
【24h】

Utility of solid phase extraction for UV-visible spectrophotometric determination of gallium in environmental and biological samples

机译：固相萃取用于紫外可见分光光度法测定环境和生物样品中的镓

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 sensitive, selective and rapid method for the determination of gallium based on the sensitive reaction of Ga(III) with 1-(2-benzothiazolylazo)-2-hydroxy-3-naphthoic acid (BTAHN) and the solid phase extraction of the BTAHN-Ga(III) complex on a column of Amberlite XAD-4 resin was developed. In the presence of 2.0 mol L-1 of nitric acid solution and cetylpyridinium chloride (CPC) medium, BTAHN reacts with gallium(III) to form a deep red complex with a molar ratio of 2 : 1 {BTAHN to Ga(III)}. The complex was enriched by solid phase extraction with an Amberlite XAD-4 resin. An enrichment factor of 500 was obtained by elution of the complex from the column with a minimal amount of dimethylformamide (DMF). The molar absorptivity of the complex in DMF medium was 5.57 x 10(7) L mol(-1) cm(-1) at 599 nm. Beer's law was obeyed in the range of 0.01-0.70 mg mL(-1). The relative standard deviation for eleven replicate samples at the 0.50 mg mL(-1) level was 0.95%. The attained detection and quantification limits amounted to 3.1 and 10.2 ng mL(-1), respectively. This method was applied to the determination of gallium in environmental water and biological samples with good results.
机译：一种基于Ga（III）与1-（2-苯并噻唑基偶氮）-2-羟基-3-萘甲酸（BTAHN）的敏感反应和BTAHN固相萃取的灵敏，选择性，快速的镓测定方法在Amberlite XAD-4树脂柱上开发了-Ga（III）配合物。在存在2.0摩尔L-1的硝酸溶液和十六烷基氯化吡啶鎓（CPC）介质的情况下，BTAHN与镓（III）反应形成摩尔比为2：1的深红色络合物{BTAHN与Ga（III）} 。通过使用Amberlite XAD-4树脂进行固相萃取来富集复合物。通过用最少量的二甲基甲酰胺（DMF）从色谱柱上洗脱复合物，可得到500的富集因子。该复合物在DMF介质中的摩尔吸收率为599 nm，为5.57 x 10（7）L mol（-1）cm（-1）。在0.01-0.70 mg mL（-1）范围内遵守比尔定律。在0.50 mg mL（-1）浓度下的11个重复样品的相对标准偏差为0.95％。达到的检测限和定量限分别为3.1和10.2 ng mL（-1）。该方法用于环境水和生物样品中镓的测定，结果良好。

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