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| 在NaCl和SCN~-存在下浮选铜(Ⅱ)间接测定十六烷基三甲基溴化铵 | |
| 引用本文： | 王春风,孙东,李全民.在NaCl和SCN~-存在下浮选铜(Ⅱ)间接测定十六烷基三甲基溴化铵[J].分析试验室,2010,29(1). |
| 作者姓名： | 王春风 孙东 李全民 |
| 作者单位： | 1. 河南师范大学生命科学学院,新乡,453007 2. 新乡职业技术学院,新乡,453002 3. 河南师范大学化学与环境科学学院,新乡,453007 |
| 基金项目： | 河南省创新人才工程项目(教高[2001]513号)项目资助 |
| 摘 要： | 研究了NaCl和NH4SCN浮选Cu(Ⅱ)间接测定十六烷基三甲基溴化铵的新方法。在水溶液中,Cu(Ⅱ)与SCN-和CTMAB缔合生成沉淀,在NaCl存在下,此沉淀被浮选。实验表明,Cu(Ⅱ)的浮选率与CTMAB的量在3.6~54.7 mg/L范围内呈良好的线性关系。CTMAB的检出限为1.8μg/mL。方法已用于合成水样和自来水中CTMAB的测定。 |
| 关 键 词： | 十六烷基三甲基溴化铵 NH4SCN NaCl |
Indirect determination of CTMAB with sodium chloride and ammonium thiocyanate by floatation and separation of copper |
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| WANG Chun-feng,SUN Dong,LI Quan-min.Indirect determination of CTMAB with sodium chloride and ammonium thiocyanate by floatation and separation of copper[J].Chinese Journal of Analysis Laboratory,2010,29(1). | |
| Authors: | WANG Chun-feng SUN Dong LI Quan-min |
| Institution: | 1.College of Life Science;Henan Normal University;Xinxiang 453007;2.Xinxiang Vocational Technical College;Xinxiang 453002;3.College of Chemistry and Environmental Science;Xinxiang 453007 |
| Abstract: | A new method for the indirect determination of cetryl-trimethyl ammonium bromide(CTMAB) with NaCl and NH4SCN by floatation and separation of Cu(Ⅱ) has been studied. The study shows Cu(Ⅱ) can associate with SCN~- and CTMAB to form an insoluble ternary ion-association complex, and the precipitate can float on the surface of the liquid phase. A good linear relationship is observed between the floatation yield (E%) of Cu(Ⅱ) and the amount of CTMAB. The detection limit for CTMAB is 1.8 μg/mL, and a linear range is 3.6～54.7 mg/L. The method is simple, rapid, reliable and nontoxic. The developed method can be applied to the indirect determination of CTMAB in synthetic samples and tap water with satisfactory results. |
| Keywords: | Cetyl-trimethyl ammonium bromide Ammonium thiocyanate Sodium chloride |
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