| 黄浦江流域典型污水中不同粒径胶体的三维荧光光谱特征 |
| 摘要点击 2404 全文点击 786 投稿时间：2016-12-23 修订日期：2017-03-09 |
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| 中文关键词 污水 胶体 粒径分级 三维荧光光谱 黄浦江 |
| 英文关键词 wastewaters colloids fractionation fluorescence Huangpu River |
| 作者 | 单位 | E-mail | | 聂明华 | 江西师范大学地理与环境学院, 鄱阳湖湿地与流域研究教育部重点实验室, 南昌 330022 | brightchina@163.com | | 晏彩霞 | 江西师范大学地理与环境学院, 鄱阳湖湿地与流域研究教育部重点实验室, 南昌 330022
华东师范大学河口海岸学国家重点实验室, 上海 200062 | wysycx@foxmail.com | | 杨毅 | 华东师范大学河口海岸学国家重点实验室, 上海 200062
华东师范大学地理科学学院, 教育部地理信息科学重点实验室, 上海 200241 | | | 周俊良 | 华东师范大学河口海岸学国家重点实验室, 上海 200062 | | | 刘敏 | 华东师范大学地理科学学院, 教育部地理信息科学重点实验室, 上海 200241 | |
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| 中文摘要 |
| 基于切向流超滤系统及三维荧光光谱技术，对黄浦江流域典型污水（即生活污水及农业污水）中的胶体进行粒径分级及三维荧光光谱特性分析. 结果表明，所选水样的胶体质量浓度及胶体态有机碳质量浓度分别为9.60~32.50 mg·L-1和0.03~6.25 mg·L-1，二者均随粒径的增加而呈递增趋势. 不同粒径分级胶体的三维荧光图谱表现为类蛋白荧光峰（峰D和峰T）及类腐殖质荧光峰（峰C和峰A）这4个荧光峰，其中类蛋白荧光峰主要存在于Mr 1×103~5×103分级胶体中，类腐殖质荧光峰主要存在于Mr 10×103~300×103分级胶体中. 同时，通过表征胶体荧光光谱特性的荧光指数，包括FI值、腐殖化指数HIX及生源指数BIX，分析了所选胶体的来源及光谱特性. 结果表明，小粒径胶体主要为陆源来源，芳香性及腐殖化程度较高；而大粒径胶体自生源比重大，类蛋白物质是其主要成分. |
| 英文摘要 |
| The spectral characteristics of fractionated colloids in wastewaters from Huangpu River were isolated and investigated via cross flow ultrafiltration systems with different molecular mass of membranes and three-dimensional excitation-emission matrix fluorescence spectroscopy. The results showed that the colloidal concentration (CC) and colloidal organic carbon content (COC) of all size fractions in all samples were in the ranges 9.60-32.50 mg·L-1 and 0.03-6.25 mg·L-1, respectively. Moreover, both CC and COC values increased as the colloidal size increased. The protein- (i.e., peaks D and T) and humic-like (peaks C and A) materials were present in all the size fractions (except for the Mr 300×103-1 μm size fraction of the influent sample), of which protein- and humic-like materials were mainly in the Mr 1×103-5×103 and Mr 10×103-300×103 size fractions, respectively. In addition, fluorescence indices (including the fluorescence index (FI), humification index (HIX), and the index of recent autochthonous contribution (BIX)) were introduced to determine the source and spectral characteristic of the selected colloids. These indices indicated that the relatively small colloids with high aromaticity and hydrophobicity mainly originated from terrestrial sources, whereas the relatively large colloids were predominantly from the recent autochthonous organic matter and the protein-like components. |
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