DISTRIBUTION CHARACTERISTICS AND POLLUTION ASSESSMENT OF NITROGEN, PHOSPHORUS AND ORGANIC MATTERS IN SURFACE SEDIMENTS OF THE NIUGU RIVER

WAN Ling; XIANG Song; NIU Yong; HUANG Tian-yin; WANG Yong-tao; PANG Yan

doi:10.13205/j.hjgc.202101027

Volume 39 Issue 1

Apr. 2021

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2021 > 39(1): 174-180

WAN Ling, XIANG Song, NIU Yong, HUANG Tian-yin, WANG Yong-tao, PANG Yan. DISTRIBUTION CHARACTERISTICS AND POLLUTION ASSESSMENT OF NITROGEN, PHOSPHORUS AND ORGANIC MATTERS IN SURFACE SEDIMENTS OF THE NIUGU RIVER[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(1): 174-180. doi: 10.13205/j.hjgc.202101027

Citation:

WAN Ling, XIANG Song, NIU Yong, HUANG Tian-yin, WANG Yong-tao, PANG Yan. DISTRIBUTION CHARACTERISTICS AND POLLUTION ASSESSMENT OF NITROGEN, PHOSPHORUS AND ORGANIC MATTERS IN SURFACE SEDIMENTS OF THE NIUGU RIVER[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(1): 174-180. doi: 10.13205/j.hjgc.202101027

Citation:

WAN Ling, XIANG Song, NIU Yong, HUANG Tian-yin, WANG Yong-tao, PANG Yan. DISTRIBUTION CHARACTERISTICS AND POLLUTION ASSESSMENT OF NITROGEN, PHOSPHORUS AND ORGANIC MATTERS IN SURFACE SEDIMENTS OF THE NIUGU RIVER[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(1): 174-180. doi: 10.13205/j.hjgc.202101027

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DISTRIBUTION CHARACTERISTICS AND POLLUTION ASSESSMENT OF NITROGEN, PHOSPHORUS AND ORGANIC MATTERS IN SURFACE SEDIMENTS OF THE NIUGU RIVER

doi: 10.13205/j.hjgc.202101027

1. School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;
2. Chinese Research Academy of Environmental Sciences, Beijing 100012, China

Received Date: 2019-12-03
Available Online: 2021-04-23

Abstract

Abstract

Taking 36 sampling points arranged along the Niugu River and Xihe River inlets as the research objects, SMT method, elemental analyzer and potassium dichromate method were employed to monitor the contents of TP, TN and OM, respectively. Spatial patterns and correlations of TN, TP and OM were examined. At the same time, comprehensive pollution index and organic pollution index was employed to evaluate pollution status. The results showed that the average contents of TN, TP and OM were 697.18 mg/kg, 920.31 mg/kg and 4.47%, respectively. The content of TN and OM in the middle reaches was higher than that in the upper and lower reaches(A,B>C,D), and the content of TP in the middle and lower reaches was higher than that in the upper reaches(A,B,D>C); C/N of each part indicated that the organic matter of C, A and D segments mainly came from external sources, and the internal and external sources of B segments were basically balanced. The average values of comprehensive pollution index and organic pollution index of surface sediment in Niugu River were 1.38 and 0.19, respectively. Both evaluation results showed that the surface sediment of Niugu River was slightly polluted, but the average pollution index of TP was 1.36, which was in severe pollution condition. The Pearson correlation analysis between indicators showed that TN, TP, and OM had significantly positively correlation with each other (P<0.01).
- the Niugu River,
- surface sediments,
- nutrients,
- distribution characteristics,
- pollution assessment

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