Investigation on Fe, Mn, Zn, Cu, Pb and Cd fractions in the natural surface coating samples and surficial sediments in the Songhua River, China
文献类型: 外文期刊
第一作者: Guo Shu-hai
作者: Guo Shu-hai;Wang Xiao-li;Li Yu;Chen Jie-jiang;Yang Jun-cheng
作者机构:
关键词: natural surface coating samples;surficial sediments;modified sequential extraction procedure;heavy metals;iron and manganese oxides;organic matter
期刊名称:JOURNAL OF ENVIRONMENTAL SCIENCES ( 影响因子:5.565; 五年影响因子:5.066 )
ISSN: 1001-0742
年卷期: 2006 年 18 卷 6 期
页码:
收录情况: SCI
摘要: Natural surface coating samples (NSCSs) from the surface of shingles and surficial sediments (SSs) in the Songhua River, China were employed to investigate the relationship between NSCSs and SSs in fractions of heavy metals (Fe, Mn, Zn, Cu, Pb, and Cd) using the modified sequential extraction procedure (MSEP). The results show that the differences between NSCSs and SSs in Fe fractions were insignificant and Fe was dominantly present as residual phase (76.22% for NSCSs and 80.88% for SSs) and Fe-oxides phase (20.33% for NSCSs and 16.15% for SSs). Significant variation of Mn distribution patterns between NSCSs and SSs was observed with Mn in NSCSs mainly present in Mn-oxides phase (48.27%) and that in SSs present as residual phase (45.44%). Zn, Cu, Pb and Cd were found dominantly in residual fractions (> 48%), and next in solid oxides/hydroxides for Zn, Pb and Cd and in easily oxidizable solids/compounds form for Cu, respectively. The heavy metal distribution patterns implied that Fe/Mn oxides both in NSCSs and SSs were more important sinks for binding and adsorption of Zn, Pb and Cd than organic matter (OM), and inversely, higher affinity of Cu to OM than Fe/Mn oxides in NSCSs and SSs was obtained. Meanwhile, it was found that the distributions of heavy metals in NSCSs and SSs were similar to each other and the pseudo-total concentrations of Zn, Cu, Pb and Cd in NSCSs were greater than those in SSs, highlighting the more importance for NSCSs than SSs in controlling behaviours of heavy metals in aquatic environments.
分类号:
- 相关文献
作者其他论文 更多>>
-
Genome-wide identification and comparative analysis of drought related genes in roots of two maize inbred lines with contrasting drought tolerance by RNA sequencing
作者:Hao Lu-yang;Liu Xu-yang;Zhang Xiao-jing;Zhang Deng-feng;Li Chun-hui;Li Yong-xiang;Shi Yun-su;Song Yan-chun;Wang Tian-yu;Li Yu;Sun Bao-cheng;Liu Cheng;Tang Huai-jun;Xie Xiao-qing
关键词:maize (Zea mays L.); root; transcriptome; RNA sequencing; drought-responsive genes
-
Long-term fertilization leads to specific PLFA finger-prints in Chinese Hapludults soil
作者:Wang Qi-qi;Wang Chuan-jie;Wu Lei;Xu Ming-gang;Zhang Wen-ju;Liu Ling-ling;Li Yu;Qin Song;Cai An-dong
关键词:long-term fertilization; microbial community; rhizosphere; non-rhizosphere
-
Transcriptomic profiling of sorghum leaves and roots responsive to drought stress at the seedling stage
作者:Zhang Deng-feng;Zeng Ting-ru;Liu Xu-yang;Gao Chen-xi;Li Yong-xiang;Li Chun-hui;Song Yan-chun;Shi Yun-su;Wang Tian-yu;Li Yu
关键词:sorghum (Sorghum bicolor L.); transcriptomic profiling; drought; leaves; roots
-
Dynamic changes of root proteome reveal diverse responsive proteins in maize subjected to cadmium stress
作者:Ren Wen;Wang Tian-yu;Li Yu;Ren Wen;Liu Ya;Zhou Miao-yi;Shi Zi;Zhao Jiu-ran
关键词:cadmium stress; iTRAQ proteomics; maize seedling roots
-
Study on Interaction between Coomassie Brilliant Blue G-250 and Bovine Serum Albumin by Fluorescence Spectroscopy and Molecular Modeling
作者:Wang Yong-gang;Yang Guang-rui;Leng Fei-fan;Ma Jian-zhong;Ma Xue-qing;Wang Xiao-li
关键词:Spectroscopy;Molecular modeling;Coomassie brilliant blue G-250;Bovine serum albumin;Interaction
-
Simultaneous Detection of 21 Kinds of Mycotoxins and Their Metabolites in Animal Plasma with Impurity Adsorption Purification Followed by Liquid Chromatography-Tandem Mass Spectrometry
作者:Wang Rui-Guo;Su Xiao-Ou;Wang Pei-Long;Zhang Wei;Xue Yan;Li Yu
关键词:Liquid chromatography-tandem mass spectrometry;Plasma;Mycotoxins;Residue
-
Simple nonlinear model for the relationship between maize yield and cumulative water amount
作者:Liu Cheng;Yang Xiao-hong;Li Jian-sheng;Liu Cheng;Sun Bao-cheng;Tang Huai-jun;Xie Xiao-qing;Wang Tian-yu;Li Yu;Zhang Deng-feng;Shi Yun-su;Song Yan-chun
关键词:yield;water;model;maize;water sensitivity;drought tolerance