SOILS NITRATE POLLUTION IN TIMIS COUNTY, ROMANIA

2013 ◽  
Author(s):  
IACOB NEMES
Keyword(s):  
Nitrate Pollution

Application of three different methods to evaluate the nitrate pollution of groundwater in the Arborea plain (Sardinia – Italy)

2015 ◽  
Vol 35 ◽  
pp. 136-139 ◽  
Author(s):  
Maria Laura Foddis ◽  
Anna Matzeu ◽  
Augusto Montisci ◽  
Gabriele Uras
Keyword(s):  
Nitrate Pollution

River-Basin Planning for Control of Nitrate Pollution

1982 ◽  
Vol 14 (4-5) ◽  
pp. 245-252 ◽  
Author(s):  
C S Sinnott ◽  
D G Jamieson
Keyword(s):  
Time Series ◽  
Time Series Analysis ◽  
River Basin ◽  
Water Resource ◽  
Potable Water ◽  
Potential Problem ◽  
Nitrate Pollution ◽  
Optimal Mix ◽  
Regional Basis ◽  
The Impact

The combination of increasing nitrate concentrations in the River Thames and the recent EEC Directive on the acceptable level in potable water is posing a potential problem. In assessing the impact of nitrates on water-resource systems, extensive use has been made of time-series analysis and simulation. These techniques are being used to define the optimal mix of alternatives for overcoming the problem on a regional basis.

Nitrate Pollution in Groundwater and Their Possible Remediation Through Adsorption

2021 ◽  
pp. 105-119
Author(s):  
Arun Lal Srivastav ◽  
Naveen Patel ◽  
Uday Bhan Prajapati ◽  
Vinod Kumar Chaudhary
Keyword(s):  
Nitrate Pollution

Tracing nitrate pollution sources and transformation in surface- and ground-waters using environmental isotopes

2014 ◽  
Vol 490 ◽  
pp. 213-222 ◽  
Author(s):  
Yan Zhang ◽  
Fadong Li ◽  
Qiuying Zhang ◽  
Jing Li ◽  
Qiang Liu
Keyword(s):  
Environmental Isotopes ◽  
Nitrate Pollution ◽  
Pollution Sources ◽  
Ground Waters

The deep challenge of nitrate pollution in river water of China

2021 ◽  
Vol 770 ◽  
pp. 144674 ◽  
Author(s):  
Xin Zhang ◽  
Yan Zhang ◽  
Peng Shi ◽  
Zhilei Bi ◽  
Zexuan Shan ◽  
...  
Keyword(s):  
River Water ◽  
Nitrate Pollution

scholarly journals Spatial variability of nitrate pollution and its sources in a hilly basin of the Yangtze River based on clustering

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yuhuan Cui ◽  
Jie Wang ◽  
Shuang Hao
Keyword(s):  
Surface Water ◽  
Yangtze River ◽  
Drainage Basin ◽  
Quality Standard ◽  
Nitrate Pollution ◽  
Middle Part ◽  
Lake Basin ◽  
The Yangtze River ◽  
Nitrate Sources ◽  
Groundwater Samples

AbstractNitrate (NO3−) pollution is a serious global problem, and the quantitative analysis of its sources contributions is essential for devising effective water-related environmental-protection policies. The Shengjin Lake basin, located in the middle to lower reaches of the Yangtze River in China was selected as the research area in our study. We first grouped 29 surface water samples and 33 groundwater samples using cluster analysis, and then analyzed potential nitrate sources for each dataset of δ15N–NO3− and δ18O–NO3− isotope values by applying a Bayesian isotope-mixing model. Our results show that the nitrogen pollution in the surface-ground water in the study area seriously exceeded to class V of the Environmental Quality Standard of Surface Water of China. The NO3− in surface water from the mid-upper reaches of the drainage basin mainly originates from soil nitrogen (SN) and chemical fertilizer (CF), with contribution rates of 48% and 32%, respectively, and the NO3− in downstream areas mainly originates from CF and manure and sewage (MS), with contribution rates of 48% and 33%, respectively. For the groundwater samples, NO3− mainly originates from MS, CF, and SN in the mid-upper reaches of the drainage basin and the northside of Dadukou near the Yangtze River, with contribution rates of 34%, 31%, and 29%, respectively, whereas NO3− in the lower reaches and the middle part of Dadukou mainly originates from MS, with a contribution rate of 83%. The nitrogen conversion of surface water in lakes and in the mid-upper reaches is mainly affected by water mixing, while the groundwater and surface water in the lower plains are mainly affected by denitrification. The method proposed in this study can expand the ideas for tracking nitrate pollution in areas with complex terrain, and the relevant conclusions can provide a theoretical basis for surface and groundwater pollution control in the hilly basin of Yangtze River.

scholarly journals Summertime fine particulate nitrate pollution in the North China Plain: Increasing trends, formation mechanisms, and implications for control policy

2018 ◽  
Author(s):  
Liang Wen ◽  
Likun Xue ◽  
Xinfeng Wang ◽  
Caihong Xu ◽  
Tianshu Chen ◽  
...  
Keyword(s):  
North China Plain ◽  
North China ◽  
Fine Particles ◽  
Nitrate Pollution ◽  
Effective Control ◽  
Formation Mechanisms ◽  
The North ◽  
The North China Plain ◽  
Holistic Understanding ◽  
Nitrate Aerosol

Abstract. Nitrate aerosol composes a significant fraction of fine particles and plays a key role in regional air quality and climate. To obtain a holistic understanding of the nitrate pollution and its formation mechanisms over the North China Plain (NCP) – the most industrialized and polluted region in northern China, intensive field observations were conducted at three sites during summertime in 2014–2015. The measurement sites include the downtown and downwind of Ji'nan, the capital city of Shandong Province, as well as the peak of NCP – Mt. Tai (1534 m a.s.l.), and hence cover representative urban, rural and remote areas of the region. Elevated nitrate concentrations were observed at all three sites despite distinct temporal and spatial variations. The nitrate / PM2.5 and nitrate / sulfate ratios have significantly increased in Ji'nan (2005–2015) and at Mt. Tai (from 2007 to 2014), indicating the worsening situation of regional nitrate pollution. A multi-phase chemical box model (RACM/CAPRAM) was deployed and constrained by observations to elucidate the nitrate formation mechanisms. The principal formation route is the partitioning of gaseous HNO3 to aerosol phase at daytime, whilst the nocturnal nitrate formation is dominated by the heterogeneous hydrolysis of N2O5. The daytime nitrate production in the NCP region is mainly limited by the availability of NO2 and to a lesser extent O3 and NH3, and the nighttime formation is controlled by both NO2 and O3. NH3 prompts significantly the nitrate formation at daytime but plays a slightly negative role in the nighttime. Our analyses suggest that controlling NOx and O3 is an efficient way at the moment to mitigate nitrate pollution in the NCP region, where NH3 is usually in excess in summer. This study provides observational evidence of rising trend of nitrate aerosol as well as scientific support for formulating effective control strategies for regional haze in China.

scholarly journals The road less traveled: Assessing the impacts of farmer and stakeholder participation in groundwater nitrate pollution research

2018 ◽  
Vol 73 (6) ◽  
pp. 610-622
Author(s):  
D. Jackson-Smith ◽  
S. Ewing ◽  
C. Jones ◽  
A. Sigler ◽  
A. Armstrong
Keyword(s):  
Stakeholder Participation ◽  
Nitrate Pollution ◽  
The Road ◽  
Pollution Research
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