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首页> 外文会议>The Meeting of the International Humic Substances Society >In Situ Spectroscopic Study and NICA-Donnan Modeling to Characterize Functional Groups in Allochthonous and Autochthonous Natural Organic Matter and Its Interactions with Major Metal Ions
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In Situ Spectroscopic Study and NICA-Donnan Modeling to Characterize Functional Groups in Allochthonous and Autochthonous Natural Organic Matter and Its Interactions with Major Metal Ions

机译：在原位光谱研究和Nica-Donnan建模中表征表征和自加载天然有机物中的官能团及其与主要金属离子的相互作用

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Thein situstudy of NOM interactions with sodium and hardness cationsprovides insights into both the mechanisms of these interactions and the extent of metal-NOM binding. This in-depth understanding can be achieved via comparison of the data of model calculations carried out using NICA-Donna model of NOM interactions with cations and, on the other hand, examination of the features of the absorbance spectra of NOM at varying system conditions. DAS results demonstrate the nature of the interactions between metals andNOM functional groups and reveal the presence of specific features with maxima at characteristic wavelengths. Several alternative parameters, such asthe differential logarithms of NOM absorbance spectra measured at a selected characteristic wavelength were found to strongly correlate with the amount of NOM-bound calcium and magnesium cations. These parameters appear to correlate with the Donnan volume as well. Therefore, numerically processed absorbance spectra of NOM can be used to quantify the amount of metal specifically or non-specifically bound to NOM.
机译：NOM与钠和硬度阳离子的AteSucty伴有这些相互作用机制以及金属NOM结合的机制。这种深入的理解可以通过使用使用与阳离子的NICA-DONNA模型进行的模型计算数据进行比较来实现，另一方面，在不同的系统条件下检查NOM的吸光光光谱的特征。 DAS结果证明了金属和肌官能团之间的相互作用的性质，并揭示了特定波长的最大特征的存在。若干替代参数，发现在所选特征波长下测量的NOM吸收光谱的这种ASTHE差异对数与NOM餐钙和镁阳离子的量强烈相关。这些参数似乎与Donnan卷相关联。因此，NOM的数值处理过的吸光度光谱可用于量化特别或非特异性结合的金属量。

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