Nitrogen and oxygen isotopes in nitrate in the groundwater and surface water discharge from two rural catchments: implications for nitrogen loading to coastal waters

2013 ◽  
Vol 115 (1-3) ◽  
pp. 111-127 ◽  
Author(s):  
Serban Danielescu ◽  
Kerry TB MacQuarrie
Keyword(s):  
Surface Water ◽  
Oxygen Isotopes ◽  
Coastal Waters ◽  
Water Discharge ◽  
Nitrogen Loading ◽  
Nitrogen And Oxygen Isotopes

scholarly journals Application of Nitrogen and Oxygen Isotopes for Source and Fate Identification of Nitrate Pollution in Surface Water: A Review

2018 ◽  
Vol 9 (1) ◽  
pp. 18 ◽  
Author(s):  
Yan Zhang ◽  
Peng Shi ◽  
Jinxi Song ◽  
Qi Li
Keyword(s):  
Surface Water ◽  
Oxygen Isotopes ◽  
Source Identification ◽  
Isotopic Fractionation ◽  
Fundamental Principle ◽  
Pollution Source ◽  
Nitrate Pollution ◽  
Transformation Mechanisms ◽  
Global Concern ◽  
Nitrogen And Oxygen Isotopes

Nitrate pollution in surface water has become an environmental problem of global concern. The effective way for controlling the nitrate pollution of surface water is to identify the pollution source and reduce the input of nitrate. In recent decades, nitrogen (δ15N) and oxygen (δ18O) isotopes of nitrate has been used as an effective approach for identifying the source and fate of nitrate pollution in surface water. However, owing to the complexity of nitrate pollution source and the influence of isotopic fractionation, the application of this method has some limitations. In this work, we systematically discussed the fundamental principle of using nitrogen and oxygen isotopes to trace the nitrate source, the fate identification of nitrate, and the major testing techniques. Subsequently, the applications of nitrogen and oxygen isotopes for source identification of surface water were illustrated. However, there are still significant gaps in the application of the source identification and transformation mechanisms to nitrate and many research questions on these topics need to be addressed.

scholarly journals Modelling the flow of nitrogen and phosphorus in Europe: from loads to coastal seas

1995 ◽  
Vol 31 (8) ◽  
pp. 141-145 ◽  
Author(s):  
A. H. W. Beusen ◽  
O. Klepper ◽  
C. R. Meinardi
Keyword(s):  
Surface Water ◽  
Western Europe ◽  
Human Impacts ◽  
Water Discharge ◽  
Surface Water Quality ◽  
Nitrogen And Phosphorus ◽  
The North ◽  
Surface Water Flow ◽  
The Baltic ◽  
Parameter Values

A model is described that aims at predicting surface water quality from N- and P-inputs on a European scale. The model combines a GIS-based approach to estimate loads, geohydrological data to define model structure and statistical techniques to estimate parameter values. The model starts with an inventory of sources of N and P: agriculture, wastewater and (for N) atmospheric deposition. Nitrogen flows are assumed to follow both surface- and groundwater flows, while for phosphorus only surface water flow is taken into account. A calibration of loss terms of N and P (assumed to be constants for the whole of Europe) by comparing total inputs to measured loads shows good agreement between observations and calculated river discharges. For the coastal seas of Europe concentrations are calculated by assuming conservative behaviour of N and P. Freshwater quality problems occur in western Europe with its intensive agriculture and high population density and locally in southern Europe where dilution is low due to low water discharge. In the marine environment the main problem areas are the Baltic and Black seas, with much lower impacts in the North and Adriatic Sea; in other coastal waters human impacts are essentially negligible.

scholarly journals SPECIES COMPOSITION AND DIVERSITY OF TIDAL TRAP NET CATCHES IN THE WATERS OF INDRAGIRI HILIR, RIAU, INDONESIA

2017 ◽  
Vol 7 (1) ◽  
pp. 47
Author(s):  
Badrudin Badrudin ◽  
Bambang Sumiono ◽  
T.S Murtoyo
Keyword(s):  
Species Composition ◽  
Fresh Water ◽  
Coastal Waters ◽  
Water Discharge ◽  
Fresh Water Discharge

The coastal waters of the eastern part of lndragiri Hilir, Riau, which are mostly estuarine, are influenced by the huge fresh water discharge and are usually fertile.

Assessment of the seasonal cycle of nitrate in PM2.5 using chemical compositions and stable nitrogen and oxygen isotopes at Nanchang, China

2020 ◽  
Vol 225 ◽  
pp. 117371 ◽  
Author(s):  
Li Luo ◽  
Yuan-Yuan Pan ◽  
Ren-Guo Zhu ◽  
Zhong-Yi Zhang ◽  
Neng-Jian Zheng ◽  
...  
Keyword(s):  
Oxygen Isotopes ◽  
Seasonal Cycle ◽  
Chemical Compositions ◽  
Nitrogen And Oxygen Isotopes
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