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| 便携式钨丝电热原子吸收光谱仪测定水样中铜、铬、铅和镉 | |
| 引用本文： | 温晓东,吴鹏,何艺桦,徐开来,吕弋,侯贤灯.便携式钨丝电热原子吸收光谱仪测定水样中铜、铬、铅和镉[J].分析化学,2009,37(5). |
| 作者姓名： | 温晓东 吴鹏 何艺桦 徐开来 吕弋 侯贤灯 |
| 作者单位： | 1. 四川大学化学学院,成都,610064 2. 分析测试中心,成都,610064 3. 四川大学化学学院,成都,610064;分析测试中心,成都,610064 |
| 摘 要： | 以钨丝原子化器和小型化CCD检测器为主要部件,组装了便携式钨丝电热原子吸收光谱分析仪,优化了载气(Ar/H2) 流速、空心阴极灯位置、原子化器高度、灰化和原子化电流等主要仪器条件.最佳载气(Ar/H2)流速(mL/min)为600 /300(Cd),800/200(Cu, Pb, Cr);灰化电流为2.9～3.2 A;原子化电流为8.5 A;CCD的积分时间为50 ms.并在优化的仪器条件下准确测定了环境水样中的铜(Cu)、铬(Cr)、铅(Pb)和镉(Cd),进样10 μL时,其检出限分别为2、5、9和0.5 μg/L.此便携式原子吸收光谱仪在环境水样痕量元素分析中可望有良好的应用前景. |
| 关 键 词： | 便携式 钨丝原子化器 电热原子吸收 铜 铬 铅 镉 |
Portable Atomic Absorption Spectrometer for Determination of Copper,Chromium,Lead and Cadmium in Environmental Water |
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| WEN Xiao-Dong,WU Peng,HE Yi-Hua,XU Kai-Lai,L Yie,HOU Xian-Deng.Portable Atomic Absorption Spectrometer for Determination of Copper,Chromium,Lead and Cadmium in Environmental Water[J].Chinese Journal of Analytical Chemistry,2009,37(5). | |
| Authors: | WEN Xiao-Dong WU Peng HE Yi-Hua XU Kai-Lai L Yie HOU Xian-Deng |
| Institution: | College of Chemistry1;Analytical & Testing Center2;Sichuan University;Chengdu 610064 |
| Abstract: | By using a W-coil atomizer and a handheld CCD detector,a portable W-coil ETAAS instrument was constructed,and major instrumental parameters were optimized,such as the carrier gas flow rate,the position of hollow cathode lamp,the height of the atomizer,and ashing and atomization currents.After optimization,the carrier gas flow rate of Ar/H2(mL/min) was 600/300 for Cd,and 800/200 for Cu,Cr and Pb,respectively;the ashing current was 2.9-3.2 A,and the atomization current was 8.5 A;and the integral time for the ... |
| Keywords: | Portable instrumentation tungsten-coil atomizer electrothermal atomic absorption spectrometry copper chromium lead cadmium |
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