Methodology for selection of optical parameters as wastewater effluent organic matter surrogates.
Methodology for selection of optical parameters as wastewater effluent organic matter surrogates.
复制标题
DOI：
10.1016/j.watres.2019.115321
复制
发表时间：
2019-11
期刊：
影响因子：
12.8
通讯作者：
Sydney L. Ulliman;J. Korak;K. Linden;F. Rosario‐Ortiz
中科院分区：
文献类型：
--
作者：
Sydney L. Ulliman;J. Korak;K. Linden;F. Rosario‐Ortiz
基于吸光度和荧光的光学参数通常用作工程系统中的替代物，但没有系统的方法来选择稳健的参数。本研究开发了一种方法，适用于区分废水排放的有机物从天然来源的有机物的案例研究。该方法定义的标准，以确定光学参数，可以检测统计上显着的有机物的组成差异，独立的有机物浓度，并测量基于荧光的参数与低敏感性的内部过滤器的影响。该标准适用于26个参数，测量了11对源水和常规处理的废水样品收集的网站具有不同的空间和时间条件。只有两个参数，即在激发波长370 nm处测量的表观荧光量子产率和荧光峰比A：T，符合所有研究中心的标准。这些结果表明，并鼓励一个客观的和强大的过程中选择有机物表征的光学替代品。
Absorbance- and fluorescence-based optical parameters are commonly used as surrogates in engineered systems, but there is no systematic approach for selecting robust parameters. This study develops a methodology that is applied to a case study of differentiating wastewater effluent organic matter from naturally-derived organic matter. The methodology defines criteria to identify optical parameters that could detect statistically significant compositional differences in organic matter, independent of organic matter concentration, and measure fluorescence-based parameters with low susceptibility to inner filter effects. The criteria were applied to 26 parameters that were measured for 11 pairs of source water and conventionally-treated wastewater samples collected from sites with varied spatial and temporal conditions. Only two parameters, apparent fluorescence quantum yield measured at excitation 370 nm and fluorescence peak ratio A:T, met the criteria across all sites. These results demonstrate and encourage an objective and robust process for selecting optical surrogates for organic matter characterization.