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首页> 外文会议>International Conference on Heavy Metals in the Environment >Method Development for the Determination of Fluorine in Water Samples via Molecular Absorption of CaF Using A High-Resolution Continuum Source Electrothermal Atomic Absorption Spectrophotometer
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Method Development for the Determination of Fluorine in Water Samples via Molecular Absorption of CaF Using A High-Resolution Continuum Source Electrothermal Atomic Absorption Spectrophotometer

机译：使用高分辨率连续源电热电热原子吸收分光光度计测定水样中水样中氟的方法开发

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In this study, determination of fluorine in water samples was established via the rotational fine structured molecular absorption of calcium mono-fluoride (CaF) at 606.440 nm using a high-resolution continuum source electrothermal atomic absorption spectrophotometer. To generate CaF in the gas phase of graphite furnace, samples were pipetted together with calcium as its nitrate form. The effect of amount of calcium, graphite furnace program, coating the graphite tube and platform with Zr and Ir and the use of modifier (Pd, Mg and Pd+Mg) on the sensitivity and linearity were investigated. In the presence of 40 μg of Ca, a perfect linearity up to 0.1 μg of F was maintained applying a pyrolysis temperature of 700°C and a molecule forming temperature of 2250°C in pyrolytically coated platforms. The limit of detection and characteristic mass of the method were 0.21 ng and 0.13 ng of F, respectively.
机译：在该研究中，使用高分辨率连续源电热电热原子吸收分光光度计，通过在606.440nm下的旋转细结构化分子吸收来确定水样中的氟在水样中的测定。为了在石墨炉的气相中产生CAF，将样品与钙作为硝酸盐形式一起移液。研究了钙，石墨炉，用Zr和IR的石墨管和平台涂覆石墨管和平台的影响以及使用改性剂（Pd，mg和Pd + mg）的敏感性和线性。在40μg的Ca存在下，保持高达0.1μgF的F的完美线性，在热解涂层平台中施加700℃的热解温度和2250℃的分子形成温度。该方法的检测极限和特征质量分别为0.21ng和0.13ng f。

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