| 用1-(2-吡啶偶氮)—2-萘酚改性硅胶富集天然水中痕量铜 |
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| 引用本文： | 童沈阳,刘锋,李克安.用1-(2-吡啶偶氮)—2-萘酚改性硅胶富集天然水中痕量铜[J].环境科学学报,1988,8(3):380-385. |
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| 作者姓名： | 童沈阳 刘锋 李克安 |
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| 作者单位： | 北京大学化学系
(童沈阳，刘锋)，北京大学化学系(李克安) |
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| 摘 要： | 用螯合剂改性硅胶富集和分离痕量金属铜离子已有报道。本文报道了用吸附1-(2—吡啶偶氮)-2-萘酚(PAN)的改性硅胶(PAN-SG)富集并测定天然水中痕量Cu~(2+)的工作。 实验部分 1.试剂和仪器 Cu~(2+)标准溶液(1.018mg/ml,0.500mg/ml);PAN的乙醇溶液(3.407×10~-_3mol/L,2.5×10~(-3)mol/L);Britton-Robison(B.R.)缓冲液(0.02mol/L,pH1.8
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| 关 键 词： | PAN改性硅胶 预富集 水样 痕量Cu~(2+) 光度法 |
| 收稿时间： | 1987/8/26 0:00:00 |
PRECONCENTRATION AND DETERMINATION OF TRACE COPPER IN NATURAL WATER USING SILICA GEL MODIFIED WITH 1-(2-PYRIDYLAZO)-2-NAPHTHAL |
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| Tong Shenyang,Liu Feng and Li Kean.PRECONCENTRATION AND DETERMINATION OF TRACE COPPER IN NATURAL WATER USING SILICA GEL MODIFIED WITH 1-(2-PYRIDYLAZO)-2-NAPHTHAL[J].Acta Scientiae Circumstantiae,1988,8(3):380-385. |
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| Authors: | Tong Shenyang Liu Feng and Li Kean |
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| Institution: | Department of Chemistry, Peking University,Department of Chemistry, Peking University and Department of Chemistry, Peking University |
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| Abstract: | Trace copper in water can be preconcentrated using silica gel modified with 1-(2-pyridylazo)-2-naphthal (PAN) and be determined spectropho-tometrically. The conditions for the preconcentration were studied. The method was applied to both artificial and natural water samples and the results suggest that copper of ppb level in water can be measured accurately after the preconcentration. |
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| Keywords: | copper sampling preconcentration PAN |
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