| 异烟酸巴比妥酸流动注射法测定水中总氰化物 |
| |
| 引用本文： | 郭少维, 孟祖君, 姜鑫, 陈杨虹.异烟酸巴比妥酸流动注射法测定水中总氰化物[J].上海师范大学学报(自然科学版),2011,40(6). |
| |
| 作者姓名： | 郭少维 孟祖君 姜鑫 陈杨虹 |
| |
| 作者单位： | 上海理工大学环境与建筑学院,上海,200093 |
| |
| 摘 要： | 建立了新的流动注射在线蒸馏测定水和废水中总氰化物的方法.该方法采用异烟酸-巴比妥酸为显色剂,将含氰样品与磷酸混合,进入在线氰消解蒸馏系统,通过加热与紫外辐射,CN-从化合物中释放形成气态的HCN并流过膜组件,其中的CN-被氢氧化钠吸收,将其转换为氯化氰,加入显色剂后可在600 nm波长下比色测定总氰化物浓度.结果表明:方法测量范围为2 ～ 200 μg·L-1,最低检出限为0.15μg·L-1,水样测量的回收率为90％ ～ 105％,精密度RSD小于3.0％.方法操作简便,灵敏度高,优于标准方法.
|
| 关 键 词： | 流动注射 异烟酸-巴比妥酸 总氰化物 |
Measurement of the total cyanide with Isonicotinic/Barbituric by flow injection analysis |
| |
| GUO Shao-wei
,
MENG Zu-jun
,
JIANG Xin
,
CHEN Yang-hong.Measurement of the total cyanide with Isonicotinic/Barbituric by flow injection analysis[J].Journal of Shanghai Normal University(Natural Sciences),2011,40(6). |
| |
| Authors: | GUO Shao-wei MENG Zu-jun JIANG Xin CHEN Yang-hong |
| |
| Institution: | GUO Shao-wei,MENG Zu-jun,JIANG Xin,CHEN Yang-hong (College of Environment and Architecture,University of Shanghai for Science and Technology,Shanghai 200093,China) |
| |
| Abstract: | Objective to establish a method of using flow injection in-line cyanide distillation to determine total cyanide in water and wastewater.This method uses sonicotinic acid and barbituric acid as the color reagent.Samples are first mixed with phosphoric acid,and then introduced into an in-line cyanide distillation unit.Then samples passed over a heater and a UV lamp.Then CN-released from complexes during the heating and irradiation combines with protons to form HCN.The HCN diffuses across a Teflon membrane and... |
| |
| Keywords: | flow injection analysis Isonicotinic/Barbituric acid method total cyanide |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《上海师范大学学报(自然科学版)》浏览原始摘要信息 |
| 点击此处可从《上海师范大学学报(自然科学版)》下载免费的PDF全文 |
|
