Combining chemical components with stable isotopes to determine nitrate sources of precipitation in Hangzhou and Huzhou, SE China

Jin, Zanfang; Yan, Weijin; Qian, Lijing; Hu, Yuming; Jin, Xi; Hong, Chenchen; Li, Feili

doi:10.1016/j.apr.2018.09.004

Cited by 18 publications

(7 citation statements)

References 44 publications

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“…However, the regional economic development is extremely uneven in rapidly developing China ( Wang et al, 2017b ). During the different stages of social-economic development, air contaminants types vary greatly ( Cable & Deng, 2018 ; Cong et al, 2015 ), further changing rainwater chemical species in the environmental system ( Jin et al, 2019 ; Xu et al, 2015 ). This kind of heterogeneity of rainwater chemistry particularly occurs in the less developed regions of Southwest China (e.g., Guizhou Province), where is the typical continuous distribution area of karst landform over the world ( Liu, Han & Zhang, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Rainwater chemistry observation in a karst city: variations, influence factors, sources and potential environmental effects

Zeng¹,

Han²

2021

PeerJ

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The rainwater chemistry and related air contaminants are used to investigate the rainwater ions sources, variations, and influence factors from 2012 to 2014 in Guiyang city (the typical karst urban area of Southwest China). According to temporal rainwater ion concentrations, the obvious variations were presented in the study period, such as Ca2+ (125∼6,652 μeq L−1) and SO42− (11∼4,127 μeq L−1). Consequently, Ca2+, Mg2+, SO42− and Cl− are considered as the leading ions. Three critical influencing factors of rainwater ions concentrations, including sources variations, rainfall amount and long-distance migration (rainfall amount > 100 mm) are identified. Based on the typical ionic ratios, source identification suggested that anthropogenic inputs mainly contributed to F−, NO3− and SO42−, while the dusts (crustal sources) are the primary sources of Mg2+, Ca2+ and K+. Cl− Enrichment in long-distance transport is the main contributor of Cl−. According to the observation of high level of total wet acid deposition, the more detailed spatio-temporal monitoring of rainfall-related acid deposition (particularly sulfur deposition) is required to understand its potential environmental effects in the aquatic ecosystem of the earth surface.

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Section: Introductionmentioning

confidence: 99%

Rainwater chemistry observation in a karst city: variations, influence factors, sources and potential environmental effects

Zeng¹,

Han²

2021

PeerJ

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“…NO3 --N concentrations were lower than NH4 + -N concentrations, and the mean NO3 --N/NH4 + -N ratio was found to be 0.87 in rainwater of Hangzhou from 2015 to 2017 (Jin et al, 2019). In this study, all mean NO3 --N/NH4 + -N ratios in the roof runoff of the seven storm events were lower than 1.0, indicating that atmospheric deposition was the dominant N source in the roof runoff.…”

Section: N Concentration and N Forms In Stormwater Runoffmentioning

confidence: 86%

“…The δ 15 N-NO3 -values of rainwater (-4.4‰ to 3.6‰) and dry deposition (-1.0‰ to 5.8‰) in Hangzhou during the wet season were in the range of the δ 15 N-NO3values in road runoff, suggesting that other NO3 -sources contributed to road runoff in addition to the atmospheric NO3 -(Fig. 3) (Jin et al, 2019;Jin et al, 2021). The fertiliser and in NO3 -fertiliser were from -10 to 10‰ and 17-25‰, respectively (Bateman and Kelly 2007;Xue et al, 2009).…”

Section: No3mentioning

confidence: 96%

Using multiple isotopes to identify sources and transport of nitrate in urban residential stormwater runoff

Zhu²,

Jin

et al. 2022

Environ Monit Assess

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Increased nitrogen (N) from urban stormwater runoff aggravates the deterioration of aquatic ecosystems as urbanisation develops. In this study, the sources and transport of nitrate (NO3 -) in urban stormwater runoff were investigated by analysing different forms of N, water isotopes (δD-H2O and δ 18 O-H2O), and NO3isotopes (δ 15 N-NO3 -and δ 18 O-NO3 -) in urban stormwater runoff in a residential area in Hangzhou, China. The results showed that the concentrations of total N and nitrate N in road runoff were higher than those in roof runoff. Moreover, high concentrations of dissolved organic N and particulate N in road runoff led to significantly different TN concentrations in road runoff (mean: 3.76 mg/L) and roof runoff (mean: 1.23 mg/L). The high δ 18 O-NO3 -values (mean: 60±13.1‰) indicated that atmospheric deposition was the predominant NO3 -source in roof runoff, as confirmed by the Bayesian isotope mixing model (SIAR model), contributing 83.6-97.8% to NO3 -. The SIAR model results demonstrated that atmospheric deposition (34.2-91.9%) and chemical fertilisers (6.27-54.3%) were the main NO3 -sources for the road runoff. The proportional contributions from soil and organic N were smaller than other sources in both the road runoff and roof runoff. For the initial period, the NO3 -contributions from atmospheric deposition and chemical fertilisers were higher and lower, respectively, than those in the middle and late periods in road runoff during storm events 3 and 4, while an opposite trend of road runoff in storm event 7 highlighted the influence of short antecedent dry weather period. It was suggested that reducing impervious areas and more effective management of fertiliser application in urban green land areas were essential to minimize the presence of N in urban aquatic ecosystems.

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“…)(Jin et al, 2019;Jin et al, 2021). The δ 15 N-NO3 -values in roof and road runoff in the urban residential area in Hangzhou were higher than the δ 15 N-NO3 -values in forest runoff (mean: -6.07‰) reported byZhang et al, (2019) because chemical fertilisers with low δ 15 N-NO3 -values were identified as the main NO3 -source in forest runoff.…”

mentioning

confidence: 83%

“…The contributions of NO3 -in the urban residential stormwater runoff were estimated using the SIAR model. The δ N-NO3 -and δ O-NO3 -values of the NO3 -sources were based on relevant literatures (Bedard-Haughn et al, 2003;Curt et al, 2004;Widory et al, 2004;Kendall et al, 2007;Li et al, 2007b;Divers et al, 2014;Yang and Toor 2016;Jin et al, 2019), as…”

Section: Estimating the Contribution Of No3 -Sourcesmentioning

confidence: 99%

Using Multiple Isotopes to Identify Sources and Transports of Nitrate in Urban Residential Stormwater Runoff

Zhu

Jin

et al. 2021

Preprint

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Increased nitrogen (N) from urban stormwater runoff aggravates the deterioration of aquatic ecosystems as urbanisation develops. In this study, the sources and transport of nitrate (NO3−) in urban stormwater runoff were investigated by analysing different forms of N, water isotopes (δD-H2O and δ18O-H2O), and NO3− isotopes (δ15N-NO3− and δ18O-NO3−) in urban stormwater runoff in a residential area in Hangzhou, China. The results showed that the concentrations of total N and nitrate N in road runoff were higher than those in roof runoff. Moreover, high concentrations of dissolved organic N and particulate N in road runoff led to significantly different TN concentrations in road runoff (mean: 3.76 mg/L) and roof runoff (mean: 1.23 mg/L). The high δ18O-NO3− values (mean: 60 ± 13.1‰) indicated that atmospheric deposition was the predominant NO3− source in roof runoff, as confirmed by the Bayesian isotope mixing model (SIAR model), contributing 83.6–97.8% to NO3−. The SIAR model results demonstrated that atmospheric deposition (34.2–91.9%) and chemical fertilisers (6.27–54.3%) were the main NO3− sources for the road runoff. The proportional contributions from soil and organic N were smaller than other sources in both the road runoff and roof runoff. For the initial period, the NO3− contributions from atmospheric deposition and chemical fertilisers were higher and lower, respectively, than those in the middle and late periods in road runoff during storm events 3 and 4, while an opposite trend of road runoff in storm event 7 highlighted the influence of short antecedent dry weather period. It was suggested that reducing impervious areas and more effective management of fertiliser application in urban green land areas were essential to minimize the presence of N in urban aquatic ecosystems.

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Combining chemical components with stable isotopes to determine nitrate sources of precipitation in Hangzhou and Huzhou, SE China

Cited by 18 publications

References 44 publications

Rainwater chemistry observation in a karst city: variations, influence factors, sources and potential environmental effects

Rainwater chemistry observation in a karst city: variations, influence factors, sources and potential environmental effects

Using multiple isotopes to identify sources and transport of nitrate in urban residential stormwater runoff

Using Multiple Isotopes to Identify Sources and Transports of Nitrate in Urban Residential Stormwater Runoff

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