Research on the Enriched Characteristic and Trend of Heavy Metal Pb in Different Marine Medium

2013 ◽  
Vol 864-867 ◽  
pp. 1017-1020
Author(s):  
Ming Chang Li ◽  
Ying Jie Zhao ◽  
Guang Lou Li ◽  
Yuan Yuan Cao
Keyword(s):  
Heavy Metal ◽  
Grid Method ◽  
Environmental Research ◽  
Characteristic Analysis ◽  
Marine Waters ◽  
Natural Neighbor ◽  
Fitting Method ◽  
Regional Sustainable Development ◽  
Marine Environmental ◽  
Marine Medium

Heavy metals are important marine environmental factors for the safety and regional sustainable development. In this paper, the Caofeidian marine district in Tangshan Bay is considered as the case for the environmental research. The distribution and trend of heavy metal Pb in marine waters and sediment is analyzed by the natural neighbor grid method and the least squares fitting method. The enriched characteristic of Pb in different marine medium is studied by the trend of Pb in waters and the sediment. The research results show that the part of Pb exists exceeded forth level of water quality in 2007 and the trend of Pb in sediment is on the rise, oppositely in waters. The enriched characteristic analysis points out the object of environmental management.

Distribution and Trend Analysis of DIN in Marine Environment Waters under Reclamation

2013 ◽  
Vol 864-867 ◽  
pp. 1000-1003 ◽  
Author(s):  
Ying Jie Zhao ◽  
Ming Chang Li ◽  
Guang Lou Li ◽  
Run Hong Jiao ◽  
Yuan Yuan Cao
Keyword(s):  
Water Quality ◽  
Environmental Management ◽  
Sustainable Development ◽  
Marine Environment ◽  
Inorganic Nitrogen ◽  
Grid Method ◽  
Dissolved Inorganic Nitrogen ◽  
Natural Neighbor ◽  
Fitting Method ◽  
Regional Sustainable Development

Marine environment is an essential aspect for the regional sustainable development. The distribution and trend of pollutant factors is a key guidance to environmental management. In this paper, the distribution and trend of dissolved inorganic nitrogen (DIN) in marine environment waters is researched for guiding and improve the environmental impact assessment in the Caofeidian marine district, Tangshan Bay. The natural neighbor grid method and the least squares fitting method are used for the distribution and the trend respectively. The research results show that the part of DIN exists exceeded forth level of water quality and the trend of DIN is on the rise in recently.

Using A Segmented Voltage Sweep Mode and A Gaussian Curve Fitting Method to Improve Heavy Metal Measurement System Performance

2012 ◽  
Vol 19 (2) ◽  
pp. 381-394
Author(s):  
José Pereira ◽  
Octavian Postolache ◽  
Pedro Girão
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Measurement System ◽  
Curve Fitting ◽  
System Performance ◽  
Redox Potentials ◽  
Voltage Sweep ◽  
Gaussian Curve ◽  
Fitting Method ◽  
Curve Fitting Method

Using A Segmented Voltage Sweep Mode and A Gaussian Curve Fitting Method to Improve Heavy Metal Measurement System PerformanceThis paper presents a voltammetric segmented voltage sweep mode that can be used to identify and measure heavy metals' concentrations. The proposed sweep mode covers a set of voltage ranges that are centered around the redox potentials of the metals that are under analysis. The heavy metal measurement system can take advantage of the historical database of measurements to identify the metals with higher concentrations in a given geographical area, and perform a segmented sweep around predefined voltage ranges or, alternatively, the system can perform a fast linear voltage sweep to identify the voltammetric current peaks and then perform a segmented voltage sweep around the set of voltages that are associated with the voltammetric current peaks. The paper also includes the presentation of two auto-calibration modes that can be used to improve system's reliability and proposes the usage of a Gaussian curve fitting of voltammetric data to identify heavy metals and to evaluate their concentrations. Several simulation and experimental results, that validate the theoretical expectations, are also presented in the paper.

In Search of Marine Ecosystem Services Values: The V-MESSES Database

2015 ◽  
Vol 17 (04) ◽  
pp. 1550037 ◽  
Author(s):  
M. Skourtos ◽  
D. Damigos ◽  
D. Tsitakis ◽  
A. Kontogianni ◽  
C. Tourkolias ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Marine Ecosystem ◽  
Economic Valuation ◽  
Reference Value ◽  
Cost Benefit ◽  
Environmental Research ◽  
The European Union ◽  
Marine Ecosystem Services ◽  
Marine Environmental ◽  
European Seas

Economic valuation of marine ecosystem services is strongly anchored within the logic of Marine Strategy Framework Directive (MSFD). An inventory and critical assessment of marine valuation studies was conducted within the European Union funded Policy-oriented marine Environmental Research for the Southern European Seas (PERSEUS) research project ( http://www.perseus-net.eu/ ) and this information was fed into a suitable, spatially explicit valuation database, namely Valuation database for Marine Ecosystem Services of Southern European Seas (V-MESSES), with the objective of providing monetary values for Southern European Seas (SES) to be used in cost–benefit and cost-effectiveness applications. At present, the database contains 93 studies offering over 110 value estimates for four categories and 20 subcategories of marine ecosystem services covering all regions of Mediterranean and Black Sea. The database enables so far the estimation of the aggregated value of all ecosystem services. However, the selection of appropriate, policy relevant value estimates is not a simple and straightforward task, since several conditions should be met in order to conduct effective and efficient value transfers. Bearing in mind the above limitations, tentative reference value estimates are compiled from the V-MESSES database for a number of coastal and marine ecosystem services, although not all service categories are covered sufficiently.

Research on Marine Environmental Quality and Oil Spill Influence in Dagukou District of Tianjin Port

2013 ◽  
Vol 838-841 ◽  
pp. 2543-2546
Author(s):  
Feng Zou ◽  
Guang Yu Zhang ◽  
Ming Chang Li
Keyword(s):  
Environmental Protection ◽  
Oil Spill ◽  
Marine Environment ◽  
Environmental Quality ◽  
Hydrodynamic Model ◽  
Wind Field ◽  
Petroleum Hydrocarbon ◽  
Field Data ◽  
Marine Waters ◽  
Marine Environmental

In this paper, marine environment in Dagukou district of Tianjin port is analyzed and evaluated. Marine oil spill accident is an important source of petroleum hydrocarbon in marine waters. So the simulation and forecasting of influence scope and trajectory of oil spill is a key means to obtain the hazard of oil spill to environmental protection target. A multi-module coupled oil spill model is constructed for simulating the influence scope and trajectory of oil spill, based on the coupling of the hydrodynamic model and wind field data.

Erratum to “Metal donation and apo-metalloenzyme activation by stable isotopically labeled metallothionein” [Marine Environmental Research 58 (2004) 371–375]

2005 ◽  
Vol 60 (1) ◽  
pp. 131-132
Author(s):  
Andrew Z. Mason ◽  
Natalie Perico ◽  
Rhonda Moeller ◽  
Kelly Thrippleton ◽  
Tiffany Potter ◽  
...  
Keyword(s):  
Environmental Research ◽  
Marine Environmental
Sign in / Sign up

Export Citation Format

Share Document