吸收光谱法表征城市景观水体表观污染的方法优化  

Optimizing absorption spectrometry characterization for apparent pollution of urban water

作　　者：陈鸣[1] 潘杨[1] 黄勇[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215009

出　　处：《苏州科技学院学报（工程技术版）》2013年第4期1-6,共6页Journal of Suzhou University of Science and Technology （Engineering and Technology）

基　　金：国家自然科学基金重点项目(50938005)

摘　　要：基于吸收光谱法建立的城市景观水体表观污染评价体系,其基本吻合率近80%,但此方法的颜色修正较为繁琐且颜色修正系数的建立缺乏理论依据;在此评价体系基础上,优化现场表观污染分级判定标准,分析实验前期所采集的150组水样数据,对扫描曲线面积改用色系修正,替代原有的颜色修正,并用浊度修正对扫描曲线面积进行辅助修正,得到修正后扫描曲线面积,优化表观污染指数(SPI)方程和及其分级标准;用后期所采集的218组数据对优化后的表观污染指数方程和分级标准进行验证。经验证,其基本吻合率由原80%提升至93%,并将评级偏差较大的情况控制在7%。Based on the evaluation system of the absorption spectrometry to characterize the apparent pollution of urban landscape water, the consistent rate proved to be nearly 80%, but the color correction of this method was lack of theoretical basis and complex. Based on the evaluation system, the spot criterion for grading different levels of apparent pollution was simplified and optimized, and after analyzing the data of 150 sets of water samples collected in the early experimental time, the original color correction was replaced by the color system correction and the turbidity correction was used to correct the spectral curve area, then the corrected spectral curve area was obtained, and the sensation pollution index（SPI） equation and criteria were optimized; the data of 218 sets of water samples collected in the late experimental time was used to prove the optimized SPI and criteria. The results show that its consistent rate is improved to 93% compared to the original 80%, and the lager rating deviation is controlled at 7%.

关 键 词：吸收光谱 城市景观水体 表观污染 色系修正 浊度修正 表观污染指数 

分 类 号：X522[环境科学与工程—环境工程]