| 分散液液微萃取-数码比色法测定水样中痕量钒 |
| |
| 引用本文： | 丁宗庆,张琼瑶,刘光东.分散液液微萃取-数码比色法测定水样中痕量钒[J].化学学报,2009,67(17):1962-1966. |
| |
| 作者姓名： | 丁宗庆 张琼瑶 刘光东 |
| |
| 作者单位： | 1. 郧阳师范高等专科学校化学系,丹江口,442700
2. 郧阳医学院医用化学教研室,十堰,442000 |
| |
| 基金项目： | 湖北省教育厅科学技术研究项目(No.Q20096001)资助项目 |
| |
| 摘 要： | 研究了分散液液微萃取-数码比色法测定水样中的痕量钒. 在酸性介质中, 痕量钒(V)和N-苯甲酰-N-苯基羟胺(BPHA)作用, 生成紫红色螯合物, 用乙醇做分散剂, 以三氯甲烷为萃取剂进行分散液液微萃取, 萃取液点样在薄层硅胶板上用数码相机进行数码成像. 成像斑点的灰度值和钒(V)的浓度成正比, 据此建立了测定水样中痕量钒的新方法. 对影响萃取富集效率和数码成像效果的因素进行了优化. 钒(V)浓度在5.0～400 μg•L－1范围内有良好的线性关系(r＝0.9993), 检出限为0.87 μg•L－1. 方法已应用于实际水样分析, 加标回收率在97.4%～102.7%之间, 相对标准偏差在1.7%～3.3%之间. 方法具有仪器成本低、方便快速、灵敏度高、环境友好等特点, 可满足野外现场的检测要求.
|
| 关 键 词： | 分散液液微萃取 数码比色 钒 N-苯甲酰-N-苯基羟胺 分离富集 水样 |
| 收稿时间： | 2008-12-31 |
| 修稿时间： | 2009-4-27 |
Determination of Vanadium in Environmental Water Samples by Dispersive Liquid-liquid Microextraction Coupled with Digital Colorimetry |
| |
| Ding Zongqing,Zhang Qiongyao,Liu Guangdong.Determination of Vanadium in Environmental Water Samples by Dispersive Liquid-liquid Microextraction Coupled with Digital Colorimetry[J].Acta Chimica Sinica,2009,67(17):1962-1966. |
| |
| Authors: | Ding Zongqing Zhang Qiongyao Liu Guangdong |
| |
| Institution: | a Department of Chemistry;Yunyang Teachers College;Danjiangkou 442700;b Department of Comment Medicinal Chemistry;Yunyang Medical College;Shiyan 442000 |
| |
| Abstract: | Determination of trace vanadium in water samples with dispersive liquid-liquid microextraction(DLLME)-digital colorimetry(DC) was investigated.In an acidic medium, the interaction of vanadium with N-benzoyl-N-phenylhydroxylamine resulted in purplish red chelate complexes.In the DLLME, ethanol and chloroform were selected as dispersive solvent and extractant.Extract liquid was spotted into the silica gel TLC plate and then directly imaged by a digital camera.The spot gray scale integral value was proportiona... |
| |
| Keywords: | dispersive liquid-liquid microextraction digital colorimetry vanadium N-benzoyl-N-phenylhydroxylamine (BPHA) separation and enrichment water sample |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《化学学报》浏览原始摘要信息 |
| 点击此处可从《化学学报》下载免费的PDF全文 |
