Determination of major and trace elements in snow in Tianjin, China: a three-heating-season survey and assessment

Wu, Guowei; Wei, Qi; Sun, Conghui; Gao, Jiajia; Pan, Ling; Guo, Liang

doi:10.1007/s11869-015-0375-y

Cited by 14 publications

(3 citation statements)

References 31 publications

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“…The pH values of snow in Heihe and Altay in 2019/2020 were 6.06-9.03 and 5.43-8.82, with averages of 7.13 and 6.93, respectively. The pH was higher than previous reported values from different locations, such as 6.74 in Tianjin (Wu et al, 2016), China, 5.50 in the Tianshan Mountains , and 5.90 in snow from Himalayan glaciers (Panicker et al, 2019). Previous studies have shown that Ca 2+ is a key ion affecting the pH of snow (Li et al, 2007;Rao et al, 2019).…”

Section: Chemical Characteristics Of Ions In Snowmentioning

confidence: 57%

Interannual variation and chemical characterization of major water-soluble inorganic ions in snow across Northwest China

et al. 2023

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From November 2018 to April 2020, 438 snow samples were collected near two field observation sites in Heihe and Altay, Northwest China, and the pH and major water-soluble inorganic ions (Ca2+, SO42−, Na+, NO3−, Cl−, K+, Mg2+, and NH4+) were analyzed. To identify the source of ions, the enrichment factor method, Pearson correlation analysis, and HYSPLIT (Hybrid Single Practical Lagrangian Integrated Trajectory) backward trajectory analysis were employed. The snow was nearly pH neutral, and Ca2+ was the dominant cation present. The anion concentration demonstrated high variability. Affected by geographical location and atmospheric circulation, the concentration of soluble inorganic ions in snow from the Altay region was higher than that in the Heihe region and remote areas at high altitude or high latitude. Compared with 2018/2019, ion concentrations in snow increased in 2019/2020, especially in the Altay region. Moreover, the temporal trend of ion concentrations was stable, indicating that the source and migration path of ions had strong consistency. Our study suggested that terrestrial sources are the main driving factors for the ions observed in snow samples from Northwest China, and some ions are also the result of anthropogenic sources (NH4+, SO42−, and NO3−), marine sources (Cl− and Na+), and salt mine dust (Cl−, Na+, SO42−, and K+).

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Section: Chemical Characteristics Of Ions In Snowmentioning

confidence: 57%

Interannual variation and chemical characterization of major water-soluble inorganic ions in snow across Northwest China

et al. 2023

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“…The particulate Hg concentration in aerosol samples from Beijing between January and December 2006 was 573±551 ng/m 3 [ 4 ]. The Hg concentrations in snow samples from Tianjin in three heating seasons in winter (2012–2015) ranged from 0.06 to 0.23 μg/L, and the Cd concentrations ranged from 0.15 to 0.72 μg/L [ 49 ]. Wet deposition of Hg in Beijing was 101.52 μg/(m 2 yr) (Nov 1994–Nov 1995) and 123.09 μg/(m 2 yr) (Nov 1995–Nov 1996) [ 50 ].…”

Section: Resultsmentioning

confidence: 99%

Trace metals, organic carbon and nutrients in the Beidagang Wetland Nature Reserve, northern China

et al. 2018

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This study aimed to determine sediment contamination in the Beidagang Wetland Nature Reserve to describe atmospheric deposition of trace metals. We analyzed Hg, Cd, Pb, TOC, TN, TP, δ13C, and δ15N, and studied their variations in surface sediments and in the vertical profiles of sediment cores collected from the reserve. Evaluation of environmental trace metal contamination using sediment quality guidelines and geochemical background values indicated that the risk of metal pollution in the reserve sediments was relatively low. Concentrations of Hg, Cd, and Pb in the sediments were much lower than concentrations in sediment samples from Bohai Bay and polluted rivers in Tianjin. Enrichment factors indicate that samples are moderately contaminated with Hg, Cd, and Pb; whereas the geo-accumulation index results classify the sediments as uncontaminated to moderately contaminated with Hg, Cd, and Pb. The distribution patterns of trace metal concentrations in the three core samples were uniform. δ13C and δ15N were used to track the sources of TOC and TN in sediments. Results show that TOC mainly originated from the residue and decaying matter of aquatic plants (e.g., algae, reeds, and Typha), while TN was derived from soil N and elevated atmospheric N deposition. Because domestic and industrial waste is not discharged into the Beidagang Wetland Nature Reserve, trace metals found in sediments mainly originate from atmospheric deposition. The results provide baseline data for analysis of trace metal accumulation in Beijing-Tianjin-Hebei, a region subject to atmospheric deposition in northern China.

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“…2017), Svirsk(Grebenshchikova et al 2017), and Tianjin (China)(Wu et al 2016), but signi cantly less than in the transport area of Moscow. The concentration of Cd in the snow of Nizhnevartovsk is low.…”

mentioning

confidence: 94%

Trace Metals and Polycyclic Aromatic Hydrocarbons in the Snow Cover of the City of Nizhnevartovsk (Western Siberia, Russia)

Московченко

Pozhitkov

Minkina

et al. 2022

Arch Environ Contam Toxicol

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The city of Nizhnevartovsk is one of the centers of oil production in Western Siberia (Russia). A survey of the contents of trace metals and metalloids (TMMs) and polycyclic aromatic hydrocarbons (PAHs) in the snow cover was conducted there. It was aimed to study insoluble particles in the snow where the predominant share of pollutants in urban areas is concentrated. In contrast to the background areas, the deposition of TMMs in Nizhnevartovsk increases by 1-2 orders of magnitude. The deposition of Co, V, Mn, and As increases by 50-93 times, and the deposition of W increases at most (by 184 times on average). Abrasion of spikes of winter tires, abrasion of metal parts of vehicles, and combustion of motor fuels cause the pollution with W, Co, and V respectively. The total content of 12 EPA PAHs in the particulate fraction of snow in the urban area averaged 148.2 ng l -1 , and the deposition rate was 17.0 µg/m 2 . In contrast to the background areas, the share of high molecular weight 5-6-ring PAHs signi cantly increases in the city, especially dibenzo(a,h)anthracene (DahA).The indicative ratios of PAHs showed that the snowpack composition was in uenced by both petrogenic and pyrogenic sources. The proportion of pyrogenic sources is the highest in the low-rise residential area due to fuel combustion to produce heat and burning of household waste. The impact of motor transport is also major and is manifested in the maximum pollution in areas of heavy tra c. No emissions of PAHs from oil spills from the nearby Samotlor oil eld have been identi ed. It is concluded that the hydrocarbon pollution of the atmosphere from the eld weakens during the winter period compared to the warm season. Application of the I geo index characterizes the majority of the studied samples as unpolluted, 24% of the observation sites are classi ed as moderately polluted, and one (4%), as highly polluted.

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Determination of major and trace elements in snow in Tianjin, China: a three-heating-season survey and assessment

Cited by 14 publications

References 31 publications

Interannual variation and chemical characterization of major water-soluble inorganic ions in snow across Northwest China

Interannual variation and chemical characterization of major water-soluble inorganic ions in snow across Northwest China

Trace metals, organic carbon and nutrients in the Beidagang Wetland Nature Reserve, northern China

Trace Metals and Polycyclic Aromatic Hydrocarbons in the Snow Cover of the City of Nizhnevartovsk (Western Siberia, Russia)

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