How the δ18ONO3 versus δ15NNO3 Plot Can Be Used to Identify a Typical Expected Isotopic Range of Denitrification for NO3-Impacted Groundwaters DOI
Lamine Boumaiza, Randy L. Stotler, Bernhard Mayer

et al.

ACS ES&T Water, Journal Year: 2024, Volume and Issue: 4(12), P. 5243 - 5254

Published: Dec. 3, 2024

Stable isotope values of δ15NNO3 and δ18ONO3 dissolved nitrate (NO3) are commonly used to identify the occurrence denitrification as there is a progressive increase accompanied by decrease in NO3 concentration. Thus, results positive trendline on dual plot versus δ15NNO3. The combination two trendlines with different slopes provides "typical expected isotopic range (TEIRD)" plot. Many studies distinguished denitrified groundwaters applying TEIRD concept that incorrectly introduced because it assumes single source even though multiple sources exist. Also, most applications rely specific although these known vary owing aquifer's changing biogeochemical conditions. Alternatively, an accurate delineation requires identification all potential aquifer their measured or reconstructed values. This allows then for be traced having slope corresponding from correlation Ultimately, each can have TEIRD, feature same within aquifer.

Language: Английский

Isotopes Reveal the Moderating Role of Ammonium on Global Riverine Water Nitrogen Cycling DOI Creative Commons
Ioannis Matiatos, Lucilena Rebêlo Monteiro, Mathieu Sébilo

et al.

ACS ES&T Water, Journal Year: 2024, Volume and Issue: 4(4), P. 1451 - 1459

Published: Feb. 21, 2024

The relationship between δ18O and δ15N in aquatic nitrate (NO3–) is used to assess nitrogen (N) cycling, primarily relying on controlled laboratory tests of isotope fractionation from nitrification denitrification. Nevertheless, findings frequently contradict the evolution δ18O/δ15N ratios observed natural river systems. We investigated this disparity by using moderated regression modeling, analyzing a global data set (n = 1303) isotopes encompassing rivers with varying NH4+/NO3– δ18O–H2O values. First, our analysis revealed that elevated (>0.6) were prevalent high ratios, suggesting reducing conditions could potentially promote denitrification and/or ammonium accumulation. By contrast, lower (<0.5) predominated low conditions, oxidizing favoring increased NH4+ removal through nitrification. Second, when values low, it resulted reduced δ18O–NO3– during nitrification, which turn lowered ratios. discovered fall, likely due predominant processes, such as denitrification, winter This assessment suggests more significant influence role water oxygen riverine N-nutrient cycling than was previously considered.

Language: Английский

Citations

4
Geochemistry and origin of inorganic contaminants in soil, river sediment and surface water in a heavily urbanized river basin DOI
Zacharenia Kypritidou, Efstratios Kelepertzis, Ioannis Kritikos

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 927, P. 172250 - 172250

Published: April 8, 2024

Language: Английский

Citations

4
Understanding nitrate dynamics in urbanized and forested river ecosystems: A study integrating natural-abundance and paired isotopes DOI
Jian Zhang, Hao Jiang, Wentao Li

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 380, P. 125073 - 125073

Published: March 23, 2025

Language: Английский

Citations

0
Reimagining the Kendall plot: using δ 15 N and δ 18 O of nitrate and advanced machine learning to improve N pollutant source classification DOI

Katarzyna Samborska-Goik,

Leonard I. Wassenaar

Isotopes in Environmental and Health Studies, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 26

Published: March 24, 2025

Nitrate (NO3-) pollution is a serious water quality issue in many countries due to contamination of lakes, rivers, and aquifers by intensive agriculture practices inadequate wastewater management. associated cultural eutrophication are anticipated increase worldwide, highlighting the need control reduce nitrogen pollution. The stable isotope ratios nitrate (δ15N, δ18O) widely used as tracers sources. primary technique for identifying sources has been longstanding Kendall boxplot, despite improved methods using Bayes' theorem R language estimating source fractions hydrogeochemical context, N data expert assessment. This article improves classification aqueous comprehensive published from four known pollutant types applying machine learning algorithms. AI modelling results reveal depictions offer robust statistical framework essential given increased better-informed management strategies.

Language: Английский

Citations

0
Rainfall driven nitrate transport in runoff of hilly area by combining time-series monitoring of hydrochemistry and stable isotopes DOI
Wenbo Zheng, Shiqin Wang,

Heping Sun

et al.

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 132830 - 132830

Published: Feb. 1, 2025

Language: Английский

Citations

0
Unlocking the Potential of Tracer Technology as a Tool for Quantifying Fertilizer Use Efficiency DOI

Surya Teja Varanasi,

P. Kannan, Sunita Kumari Meena

et al.

Journal of Plant Nutrition and Soil Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

ABSTRACT With the increase in global population, importance of efficient use fertilizer will become essential, and development innovative effective efficiency (FUE) strategies is a need hour. However, injudicious leads to nutrient losses environmental pollution. Several technologies have been developed improve crop production uptake from applied fertilizers, including balanced fertilization, foliar application, mixed controlled‐release slow‐release nano‐fertilizers. To quantify several indicators are being used such as efficiency, agronomic partial factor productivity. Isotope tracer studies proven useful measuring soil availability, quantifying by plants through nutrients derived fertilizer, monitoring environment, establishing transport accumulation inside plants. Results stable isotopes 15 N, 13 C, 34 S radioisotopes 32 P 65 Zn accurately measure potential crops their partitioning efficiency. Radioisotope demonstrated that application can be faster more than for some crops, offering promising approach improving FUE. Despite its potentiality, research has many challenges, ensuring target concentrations within analytical method ranges, accounting isotopic interference non‐target compounds, limited access specialized equipment measurement errors. overcome these constraints, advanced study methodology integration with sensor‐based detection must augment site‐specific management precision agriculture. Continued collaborations valuable exploiting full technology different optimizing dose boost yields sustainably, thereby contributing food security sustainability.

Language: Английский

Citations

0
Nitrogen and oxygen isotopes in nitrate and nitrite in the polluted surface waters from the Arno River Basin (central Italy) DOI Creative Commons
Lorenzo Chemeri, Bárbara Nisi, Andrea Pierozzi

et al.

Journal of Environmental Sciences, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Citations

0
Tracing nitrate contamination sources and dynamics in an unconfined alluvial aquifer system (Velika Gorica well field, Croatia) DOI Creative Commons
Patricia Buškulić, Zoran Kovač, Ioannis Matiatos

et al.

Environmental Science Processes & Impacts, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 11, 2024

Nitrate ions (NO

Language: Английский

Citations

2
Partitioning soil water balance under deep-rooted fruit trees in the thick loess deposits DOI

Jineng Sun,

Jiaxin Wang, Zhi Li

et al.

CATENA, Journal Year: 2024, Volume and Issue: 244, P. 108261 - 108261

Published: July 26, 2024

Language: Английский

Citations

1
How the δ18ONO3 versus δ15NNO3 Plot Can Be Used to Identify a Typical Expected Isotopic Range of Denitrification for NO3-Impacted Groundwaters DOI
Lamine Boumaiza, Randy L. Stotler, Bernhard Mayer

et al.

ACS ES&T Water, Journal Year: 2024, Volume and Issue: 4(12), P. 5243 - 5254

Published: Dec. 3, 2024

Stable isotope values of δ15NNO3 and δ18ONO3 dissolved nitrate (NO3) are commonly used to identify the occurrence denitrification as there is a progressive increase accompanied by decrease in NO3 concentration. Thus, results positive trendline on dual plot versus δ15NNO3. The combination two trendlines with different slopes provides "typical expected isotopic range (TEIRD)" plot. Many studies distinguished denitrified groundwaters applying TEIRD concept that incorrectly introduced because it assumes single source even though multiple sources exist. Also, most applications rely specific although these known vary owing aquifer's changing biogeochemical conditions. Alternatively, an accurate delineation requires identification all potential aquifer their measured or reconstructed values. This allows then for be traced having slope corresponding from correlation Ultimately, each can have TEIRD, feature same within aquifer.

Language: Английский

Citations

1