%0 Journal Article
%T A new assessment method of heavy metal pollution in tidal flat sediments using color indexes<br>潮滩沉积物重金属污染的色度反演方法初探
%A 任少芳
%A 郑祥民
%A 周立旻
%A 朱立峰
%A 宋连环
%A 王永杰
%A 黄东锋
%J 环境科学学报
%D 2009
%I 
%X Environmental monitoring methods for environmental protection of tidal flats is an important topic in wetland research. To search for a rapid assessment method of soil heavy metal contamination, in this work a color index system (L*,a*,b*) was designed to evaluate the concentration of heavy metals (Cu, Cr, Pb, Zn, Mn, Fe ) in the sediments of Chongming Dongtan. The results indicated a strong correlation between the color indexes and heavy metal contents in sediments, which implies that the content of heavy metals in sediments can potentially be quantitatively deduced from the sediment color indexes. Regression models between the color indexes and the heavy metal concentrations were established and tested. In the low, middle and high beach sediments of Chongming Dongtan, there were significant negative correlations between Cu, Pb, Zn and L*, with the highest correlation coefficient of Cu being-0.97, of Pb being -0.88 and of Zn being -0.98; there were significant positive correlations between Cu, Pb, Zn and a*, but there were significant negative correlations between Cr and a*. This work shows that when the heavy metal content in the estuary is stable, the color indexes can be rapid, efficient and useful proxies for detailed, large-scaled surveys or monitoring of heavy metal pollution in tidal flat sediments.
%K color indexes measurement
%K heavy metal pollution
%K tidal flat
%K sedimentary environment<br>色度测量
%K 重金属污染
%K 潮滩
%K 沉积环境
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=D70981407F56EAA55B945E1B94E94661&yid=DE12191FBD62783C&vid=771469D9D58C34FF&iid=59906B3B2830C2C5&sid=1C967A5CB3E65B9B&eid=12303F3260BBCB69&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=0&reference_num=68