Flow Injection Calibration Methods for Atomic Absorption Spectrometry
Flow Injection Calibration Methods for Atomic Absorption Spectrometry
复制标题
原子吸收光谱法的流动注射校准方法
DOI：
10.1016/0003-2670(83)80058-0
复制
发表时间：
1983
影响因子：
6.2
通讯作者：
Ahyar B. Idris
中科院分区：
文献类型：
--
作者：
J. Tyson;J. Appleton;Ahyar B. Idris
简要评述了原子吸收光谱仪在流动注射分析中作为检测器的应用。描述了一个新的简化模型与这样的系统观察到的分散效果，该模型是基于考虑分散是由于一个假设的混合室位于测量阶段之前。这种方法的实用性证明了两种方法的校准中常用的原子吸收光谱法，它表明，流动注射样品和标准处理技术与体积装置的操作。流动注射法作为标准加入法的模拟物具有许多优点。提出使用指数浓度梯度作为使用单一浓缩标准品的校准的新方法。给出了标准钢中铬的测定结果。
The use of an atomic absorption spectrometer as a detector in flow injection analysis is briefly reviewed. A new simplified model is described for the dispersion effects observed with such systems; the model is based on considering the dispersion to be due to a single hypothetical mixing chamber located immediately prior to the measurement stage. The utility of this approach is demonstrated for two methods of calibration commonly used in atomic absorption spectrometry, and it is shown that flow injection sample and standard handling techniques are comparable to manipulation with volumetric apparatus. The flow injection method has a number of advantages for the analogue of the standard addition method. The use of an exponential concentration gradient is proposed as a novel method of calibration using a single concentrated standard. Results are presented for the determination of chromium in standard steels.