吸收光谱法表征城市水体表观污染  

Absorption Spectrometry Characterization for the Apparent Pollution of Urban Water

作　　者：潘杨[1] 黄勇[1] 申杰[1] 陈鸣[1] 

机构地区：[1]苏州科技学院环境科学与工程学院,江苏苏州215011

出　　处：《安全与环境工程》2014年第1期42-47,共6页Safety and Environmental Engineering

基　　金：国家自然科学基金重点项目(50938005)

摘　　要：随着我国城市水体污染的加剧,城市水体的主体功能逐渐转化为景观用途,良好的感官成为城市水体的基本要求,但现行水质标准与评价方法均不能准确评价城市水体的表观污染程度.本文提出采用吸收光谱法对城市水体表观污染进行表征,即通过计算抽滤前、后水样在可见光区（380～780 nm）吸收光谱曲线面积的差值来区分城市水体不同的表观污染程度.结果表明：扫描曲线面积对受污水体颜色及浑浊度具有较好的响应关系,通过颜色修正,扫描曲线面积与人体主观感受污染程度具有较好的一致性,从而建立了表观污染指数方程及评判标准,并采用苏州城市河道100组水样对表观污染指数方程进行验证,其基本吻合率超过80％.With the increasing pollution of urban water in China, the main function of urban water gradually transforms into landscape use. Good sense is the basic requirement of urban water, but the existing water quality standards and evaluation methods cannot accurately evaluate the degree of the apparent pollution of urban water. This paper applies absorption spectrum to characterizing the apparent pollution of urban wa- ter,which means that the difference between the spectral scanning curve areas in the visible region （380- 780nm） of water samples before and after filtration can distinguish the degree of the apparent pollution of urban water. The experiments show that the scanning curve areas have better relationship with water color and turbidity,and, after the color correction,the scanning curve area and the degree of apparent pollution felt by human subjective sense have good consistency. At the end, the paper establishes the apparent pollu- tion index equation and criteria and takes 100 groups of water samples from Suzhou urban river to verify this apparent pollution index equation, and the basic accuracy is more than 80 %.

关 键 词：城市水体 吸收光谱法 表观污染 表观污染指数 

分 类 号：X52[环境科学与工程—环境工程]