CHARACTERISTICS AND SOURCES APPORTIONMENT OF WATER-SOLUBLE IONS IN DUSTFALL IN QINGDAO

HAN Kun; LIU Ruhai; XU Hongxia; WANG Yan; SHAO Long; LIU Xiaoyu

doi:10.13205/j.hjgc.202203017

Volume 40 Issue 3

Mar. 2022

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HAN Kun, LIU Ruhai, XU Hongxia, WANG Yan, SHAO Long, LIU Xiaoyu. CHARACTERISTICS AND SOURCES APPORTIONMENT OF WATER-SOLUBLE IONS IN DUSTFALL IN QINGDAO[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(3): 111-117,193. doi: 10.13205/j.hjgc.202203017

Citation:

HAN Kun, LIU Ruhai, XU Hongxia, WANG Yan, SHAO Long, LIU Xiaoyu. CHARACTERISTICS AND SOURCES APPORTIONMENT OF WATER-SOLUBLE IONS IN DUSTFALL IN QINGDAO[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(3): 111-117,193. doi: 10.13205/j.hjgc.202203017

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CHARACTERISTICS AND SOURCES APPORTIONMENT OF WATER-SOLUBLE IONS IN DUSTFALL IN QINGDAO

doi: 10.13205/j.hjgc.202203017

HAN Kun^1,2,
LIU Ruhai^1,2,
XU Hongxia^1,2,
WANG Yan^{1,2
,
,},
SHAO Long^1,2,
LIU Xiaoyu^1,2

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

Received Date: 2021-06-01
Available Online: 2022-07-07

Abstract

Abstract

In March 2017, 93 dustfall samples were collected in the main urban area of Qingdao, with the purpose of understanding the spatial distribution and source of water-soluble ions in the atmospheric dustfall in Qingdao. The contents of water-soluble ions were determined, including NO₃^-, Ca²⁺, SO₄^2-, Cl^-, Na⁺, K⁺, Mg²⁺, NH₄⁺, and their spatial distribution and source were analyzed. NO₃^-, Ca²⁺ and SO₄^2- were the main ions for dust reduction in Qingdao, accounting for 82% of the total mass concentration of water-soluble ions. There were differences in the spatial distribution of ions, and the areas with higher ion concentration were mainly concentrated in the Southwest of Shinan District and Shinbei District, and northeast of Laoshan District, which were mainly affected by human emission. The mass concentration ratio of NO₃^-/SO₄^2- in the four urban areas was higher than 1, indicating that mobile pollution sources were the main source. Correlation analysis and PCA-MLR analysis showed that the traffic source was the main source of water-soluble ions in dust in Qingdao, followed by soil dust and sea salt.
- dustfall,
- water soluble ions,
- spatial distribution,
- pollution characteristics,
- source apportionment

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References(40)

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