Qualitative and quantitative analysis of source for organic carbon and nitrogen in sediments of rivers and lakes based on stable isotopes

doi:10.1016/j.ecoenv.2020.110436

	Qualitative and quantitative analysis of source for organic carbon and nitrogen in sediments of rivers and lakes based on stable isotopes
	Guo, Qingjun 1,5; Wang, Chunyu 4; Wei, Rongfei 1; Zhu, Guangxu 3; Cui, Meng 1; Okolic, Chukwunonso Peter 2
刊名	ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
	2020-06-01
卷号	195 页码:10
关键词	Source and fate Carbon and nitrogen Isotopes Qualitative and quantitative analysis Sediments
ISSN号	0147-6513
DOI	10.1016/j.ecoenv.2020.110436
通讯作者	Guo, Qingjun(guoqj@igsnrr.ac.cn) ; Wei, Rongfei(weirongfei4099@126.com)
英文摘要	Sediment is the most dominant reservoir of organic pollutants in the aquatic environment. Understanding carbon and nitrogen sources in sediments and factors that controls distribution enhances our understanding of biogeochemical cycles of carbon and nitrogen. Different end-members and surface sediments of rivers and sediments profiles of lakes were collected. The concentrations of TOC and TON and their delta C-13 and delta N-15 were studied for qualitative and quantitative analysis of natural and anthropogenic sources. The results show that TOC and TON concentrations of the sediments from rivers range from 0.63% to 10.83% and 0.06%-0.86%, respectively, indicating substantial great environmental risks in these rivers. The concentrations of TOC and TON for the four sediment profiles below the 5 cm, increase in the order of Miyun < Chuidiao < Qunming < Houhai, as influenced by their respective environment condition. Moreover, water quality was quite good and there was no risk of eutrophication in Miyun reservoir. delta C-13(org) and (delta)15N(or)g in surface sediments of the studied 18 rivers range from - 27.2 parts per thousand to - 24.9 parts per thousand and - 2.2 parts per thousand to +10.9 parts per thousand, respectively. Based on a simple delta C-13-based end-member mixing and a C/N ratio model, organic matter in the surface sediments of these rivers were mainly derived from sewage and C3 plant. In addition, the sources of organic matter differed in each layer of the four sediment profiles. This study provides a reliable method for qualitative and quantitative identification of the source of organic matter in sediments, and offers theoretical basis for better management of rivers and lakes.
资助项目	National Natural Science Foundation of China[41625006] ; National Natural Science Foundation of China[41761144066] ; National Natural Science Foundation of China[41890822] ; National Natural Science Foundation of China[41561144005] ; National Natural Science Foundation of China[41603012] ; Development Services of Featured Institute of Chinese Academy of Sciences[TSYJS01]
WOS关键词	MATTER SOURCES ; C/N RATIOS ; SURFACE SEDIMENTS ; SPATIAL-DISTRIBUTION ; BEIYUN RIVER ; BAY ; INDICATORS ; ESTUARY ; DELTA-C-13 ; MARINE
WOS研究方向	Environmental Sciences & Ecology ; Toxicology
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000525762800040
资助机构	National Natural Science Foundation of China ; Development Services of Featured Institute of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/133893]
专题	中国科学院地理科学与资源研究所
通讯作者	Guo, Qingjun; Wei, Rongfei
作者单位	1.Chinese Acad Sci, Ctr Environm Remediat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Alex Ekwueme Fed Univ, Dept Chem Biochem & Mol Biol, Analyt Environm Chem Unit, Ndufu Alike, Nigeria 3.Guiyang Univ, Coll Biol & Environm Engn, Guiyang 550005, Peoples R China 4.Naiman Cty Environm Protect Bur Tongliao, Inner Mongolia 028300, Peoples R China 5.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Guo, Qingjun,Wang, Chunyu,Wei, Rongfei,et al. Qualitative and quantitative analysis of source for organic carbon and nitrogen in sediments of rivers and lakes based on stable isotopes[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2020,195:10.
APA	Guo, Qingjun,Wang, Chunyu,Wei, Rongfei,Zhu, Guangxu,Cui, Meng,&Okolic, Chukwunonso Peter.(2020).Qualitative and quantitative analysis of source for organic carbon and nitrogen in sediments of rivers and lakes based on stable isotopes.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,195,10.
MLA	Guo, Qingjun,et al."Qualitative and quantitative analysis of source for organic carbon and nitrogen in sediments of rivers and lakes based on stable isotopes".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 195(2020):10.