geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Modeling on adsorption-desorption of trace metals to suspended particle matter in the Changjiang Estuary


, : Modeling on adsorption-desorption of trace metals to suspended particle matter in the Changjiang Estuary. Environmental Geology (Berlin) 53(8): 1751-1766

The uptake and release of trace metals (Cu, Ni, Zn, Cd, and Co) in estuaries are studied using river and sea end-member waters and suspended particulate matter (SPM) collected from the Changjiang Estuary, China. The kinetics of adsorption and desorption were studied in terms of environmental factors (pH, SPM loading, and salinity) and metal concentrations. The uptake of the metals studied onto SPM occurred mostly within 10 h and reached an asymptotic value within 40 h in the Changjiang Estuary. As low pH river water flows into the high pH seawater and the water become more alkaline as it approaches to the seaside of estuary, metals adsorb more on SPM in higher pH water, thus, particulate phase transport of metal become increasingly important in the seaward side of the estuary. The percentage of adsorption recovery and the distribution coefficients for trace metals remained to be relatively invariable and a significant reduction only occurred in very high concentrations of metals (> 0.1 mg L-1). The general effect of salinity on metal behavior was to decrease the degree of adsorption of Cu, Zn, Cd, Co, and Ni onto SPM but to increase their adsorption equilibrium pH. The adsorption-desorption kinetics of trace metals were further investigated using Kurbatov adsorption model. The model appears to be most useful for the metals showing the conservative behavior during mixing of river and seawater in the estuary. Our work demonstrates that dissolved concentration of trace metals in estuary can be modeled based on the metal concentration in SPM, pH and salinity using a Kurbatov adsorption model assuming the natural SPM as a simple surfaced molecule.

US$19.90

DOI: 10.1007/s00254-007-0781-z


Other references

Koh, Y.H.; Park, Y.S.; Takahashi, M.; Suzuki, K.; Taniguchi, N., 2001: Aldehyde reductase gene expression by lipid peroxidation end products, MDA and HNE. Membrane lipid peroxidation results in the production of a variety of aldehydic compounds that play a significant role in aging, drug toxicity and the pathogenesis of a number of human diseases, such as atherosclerosis and cancer. Increased lipid...

Pappas, D.A.; Reed, G.W.; Saunders, K.; John, A.; Shewade, A.; Greenberg, J.D.; Kremer, J.M., 2015: Characteristics Associated with Biologic Monotherapy Use in Biologic-Naive Patients with Rheumatoid Arthritis in a US Registry Population. The aim of this study was to describe factors associated with initiating a biologic as monotherapy vs in combination with a conventional disease-modifying antirheumatic drug (DMARD) in biologic-naive patients with rheumatoid arthritis (RA) enrolle...

Alderson, H.J., 1956: Adventures in science teaching. Canadian Nurse 52(4): 271-276

Lancaster, W.; Sundberg, J., 1982: Characterization of papillomaviruses isolated from cutaneous fibromas of white-tailed deer and mule deer Odocoileus virginianus, Odocoileus hemionus. Virology 123(1): 212-216

Reardon, T., 1992: Sustainability issues in Sahelian agricultural development and research. There is an alarming opposition between increasing environmental degradation in the Sahel and the pressing need to increase food production and reverse stagnation in agriculture. This paper discusses three important issues that face agricultural r...

Schwidde, J.T., 1952: Spina bifida; survey of two hundred twenty-five encephaloceles, meningoceles, and myelomeningoceles. A.M.A. American Journal of Diseases of Children 84(1): 35-51

Hengst-Zhang, J.A.; Weitzman, S.A., 1992: Methylation inhibits the interaction of DNA binding proteins with a potential c-abl intron regulatory element. We have identified DNA binding proteins which interact with a sequence found in an intron of the tyrosine kinase coding portion of the murine c-abl gene. Several specific DNA: protein complexes were observed. Those complexes of approximate molecul...

Iguchi, T.; Watanabe, H.; Arisono, K., 2001: Effects of endocrine disruptors on ecology--reports from the Gordon Reserch Conference of Environmental Endrocrine Disruptors. This article described impression and overview of the topics presented at the Gordon Research Conference of Environmental Endocrine Disruptors held at Plymouth State College from June 18-23, 2000. More investigations using invertebrate species are...

Jacobs, J.V.; Kasser, S.L.; Padgett, P.K., 2013: Clarification on the scoring of the Mini-BESTest. Physical Therapy 93(6): 860-860

Ando, T.; Dunn, A.J., 1997: Effects of mouse tumor necrosis factor-alpha on the hypothalamic-pituitary-adrenal-axis and brain catecholamine and indolamine metabolism in mice. Society for Neuroscience Abstracts 23(1-2): 1511