TEMPORAL VARIATION, SOURCE ANALYSIS AND ENVIRONMENTAL EFFECTS OF WATER-SOLUBLE IONS IN TSP IN QINGDAO

LI Dou; WANG Yan; LIU Ruhai; SUN Haolin; YIN Pingping; ZHOU Xuyuan; MO Bing; LI Dongting

doi:10.13205/j.hjgc.202308014

Volume 41 Issue 8

Aug. 2023

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LI Dou, WANG Yan, LIU Ruhai, SUN Haolin, YIN Pingping, ZHOU Xuyuan, MO Bing, LI Dongting. TEMPORAL VARIATION, SOURCE ANALYSIS AND ENVIRONMENTAL EFFECTS OF WATER-SOLUBLE IONS IN TSP IN QINGDAO[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(8): 109-116,126. doi: 10.13205/j.hjgc.202308014

Citation:

LI Dou, WANG Yan, LIU Ruhai, SUN Haolin, YIN Pingping, ZHOU Xuyuan, MO Bing, LI Dongting. TEMPORAL VARIATION, SOURCE ANALYSIS AND ENVIRONMENTAL EFFECTS OF WATER-SOLUBLE IONS IN TSP IN QINGDAO[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(8): 109-116,126. doi: 10.13205/j.hjgc.202308014

Citation:

LI Dou, WANG Yan, LIU Ruhai, SUN Haolin, YIN Pingping, ZHOU Xuyuan, MO Bing, LI Dongting. TEMPORAL VARIATION, SOURCE ANALYSIS AND ENVIRONMENTAL EFFECTS OF WATER-SOLUBLE IONS IN TSP IN QINGDAO[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(8): 109-116,126. doi: 10.13205/j.hjgc.202308014

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TEMPORAL VARIATION, SOURCE ANALYSIS AND ENVIRONMENTAL EFFECTS OF WATER-SOLUBLE IONS IN TSP IN QINGDAO

doi: 10.13205/j.hjgc.202308014

LI Dou^1,2,
WANG Yan^1,2,
LIU Ruhai^{1,2
,
,},
SUN Haolin^1,2,
YIN Pingping^1,2,
ZHOU Xuyuan^1,2,
MO Bing^1,2,
LI Dongting^1,2

1. College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China;
2. Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China

Received Date: 2022-11-24
Available Online: 2023-11-15

Abstract

Abstract

A long-term study of water-soluble fractions in atmospheric particulate matter in Qingdao was conducted to reveal the characteristics of atmospheric pollution changes and their nutrient transportation to offshore. Total suspended particulate matter (TSP) samples were collected from 2019-11 to 2021-04, and the contents of nine water soluble inorganic ions (WSIIs) were measured to evaluated their temporal changes, sources, and environmental effects. The results showed that the concentration of WSIIs in Qingdao TSP was (32.0±6.51) μg/m³, and the main ions were NO₃^-, SO₄^2- and NH₄⁺. After 2013, influenced by energy structure adjustment and pollution prevention and control policies, the concentration of SO₄^2- decreased significantly and the concentration of NO₃^- increased. The concentration of NO₃^- and NH₄⁺ was in the order of winter>spring>autumn>summer, and the concentration of SO₄^2- was in the order of winter>summer>spring>autumn. With strong solar radiation and high temperature in summer, NO₃^- and NH₄⁺ were easily decomposed and volatilized, resulting in the lowest concentrations in summer; WSIIs concentrations were highest in winter due to inland air masses transportation from Mongolia and North China, coal heating and unfavorable atmospheric dispersion conditions; strong solar radiation in summer facilitated SO₄^2- production, while summer winds increased sea-sourced sulfate input, resulting in high SO₄^2- concentrations in summer. The annual average ρ(NO₃^-)/ρ(SO₄^2-) ratio was greater than 1, and mobile source pollution was dominant; SOR and NOR were greater than 0.1 in all seasons, and secondary production rates of nitrogen and sulfur were high. Sink fluxes of NH₄⁺-N and NO₃^--N nutrients were 48.8, 87.0 mmol/(m²·a), respectively, and the relative increase in nitrogen sink fluxes would exacerbate the phosphorus limitation of offshore phytoplankton growth.
- TSP,
- water-soluble ions,
- seasonal changes,
- source analysis,
- nitrogen deposition

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References(40)

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