| 一种测量原子吸收电检测读数系统吸光度线性误差的光度方法 |
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| 引用本文： | 刘瑶函,赵永强,刘志高,陈建钢.一种测量原子吸收电检测读数系统吸光度线性误差的光度方法[J].现代科学仪器,2010(4):66-69. |
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| 作者姓名： | 刘瑶函 赵永强 刘志高 陈建钢 |
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| 作者单位： | 上海光谱仪器有限公司,上海,200233 |
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| 基金项目： | 上海市科委2006年度"登山行动计划"科学仪器专项基金(科学仪器) |
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| 摘 要： | 影响原子吸收仪器光度误差的因素很多,有光学上的也有电学上的,必须确保电检测读数系统(包括模拟电路、数字电路和上位机数据采样/处理等读出系统)的吸光度线性范围比实际应用范围更大。本文提出了一种测量电检测读数系统吸光度线性误差的光度方法,检测范围可达3Abs以上。方法基于采用空心阳极型汞灯253.7nm波长的辐射作为光源,对系列重铬酸钾溶液进行光度测量,根据吸光度与浓度的线性相关性来检验电检测读数系统线性误差。简称此法为"汞灯-重铬酸钾溶液法"。
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| 关 键 词： | 原子吸收 电检测读数系统 重铬酸钾溶液 吸光度线性误差 |
A Photometric Method to Estimate the Absorbance Linearity Errors of Electronics Detection and Read-out System for AAS |
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| Liu Yaohan,Zhao Yongqiang,Liu Zhigao,Chen Jiangang.A Photometric Method to Estimate the Absorbance Linearity Errors of Electronics Detection and Read-out System for AAS[J].Modern Scientific Instruments,2010(4):66-69. |
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| Authors: | Liu Yaohan Zhao Yongqiang Liu Zhigao Chen Jiangang |
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| Affiliation: | Liu Yaohan, Zhao Yongqiang, Liu Zhigao, Chen Jian＇gang (Shanghai Spectrum Instruments limited Company, shanghai 200233, china) |
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| Abstract: | Many factors （optics, electronics and so on） affect the measured absorbance linearity in AAS. It must be ensured that the absorbance linearity range of electronics detection and read-out system is larger than the range of practice application. In this paper, we present a photometric method （briefly called ＂Hg lamp-potassium dichromate method＂ ） to estimate the absorbance linearity errors for AAS electronics detection and read-out system. The method is based on using a light source of an Hg hollow anode lamp and measuring the absorbance of a series of potassium dichromate solution at line of 253.7 nm. The detectable range is up to 3.0AU. |
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| Keywords: | Atomic absorption Electronics detection and read-out system Solution of potassium dichromate Absorbance linearity errors |
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