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DOI	10.1016/j.marpolbul.2019.110563
	Structural variation of coloured dissolved organic matter during summer and winter seasons in a tropical estuary: A case study
	Chari N.V.H.K.; Pandi S.R.; Kanuri V.V.; Basuri C.K.
发表日期	2019
ISSN	0025326X
卷号	149
英文摘要	The diurnal variations in water quality and optical properties of organic matter were studied in the Gautami-Godavari estuary during two contrasting seasons. Dissolved inorganic nitrogen (DIN) and silicate showed similar patterns with the tide during summer, whereas in winter contrasting trends were noticed. Three-folds higher N to P ratio was recorded in winter than in summer. The spectral slope ratio (SR) and specific ultra violet absorption coefficient (SUVA) peaked during summer (1.28 ± 0.09 and 3.95 ± 0.2) followed by winter (1.10 ± 0.18 and 1.91 ± 0.35). The parallel factor (PARAFAC) analysis of excitation emission matrix (EEM) fluorescence spectra was extracted three humic (C1, C2, C3) and one protein-like (tryptophan (C4)) fluorophore components. Humic like fluorophores inversely correlated with the tide in both the seasons, due to influence of seawater. In summer, the Chlorophyll a (Chl a) and dissolved organic carbon (DOC) showed positive correlations with humic like and C4 fluorophores, suggesting the insitu organic matter production. © 2019 Elsevier Ltd
英文关键词	Coloured dissolved organic matter; Excitation emission matrix spectra; Parallel factor analysis; Spectral slope
语种	英语
scopus关键词	Amino acids; Biogeochemistry; Dissolution; Factor analysis; Fluorophores; Optical properties; Silicates; Tropics; Water quality; Absorption co-efficient; Coloured dissolved organic matters; Dissolved inorganic nitrogens; Dissolved organic carbon; Excitation emission matrices; Excitation-emission matrix fluorescences; Parallel factor analysis; Spectral slopes; Organic carbon; chlorophyll a; dissolved organic matter; fluorescent dye; nitrogen; organic carbon; phosphorus; sea water; silicate; tryptophan; water; chlorophyll a; nitrogen; organic compound; phosphorus; dissolved organic matter; diurnal variation; factor analysis; fluorescence spectroscopy; optical property; summer; water quality; winter; Article; controlled study; estuary; geographic distribution; humic substance; parallel factor analysis; radiation absorption; seasonal variation; spectrofluorometry; summer; tide; trend study; tropics; ultraviolet radiation; water quality; winter; chemistry; environmental monitoring; fluorescence; season; tropic climate; Andhra Pradesh; Godavari Estuary; India; Chlorophyll A; Environmental Monitoring; Estuaries; Fluorescence; Humic Substances; Nitrogen; Organic Chemicals; Phosphorus; Seasons; Seawater; Tropical Climate
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/149529
作者单位	Marine Chemistry Laboratory, Andhra University, Visakhapatnam, 530003, India; National Ganga River Basin Authority, Central Pollution Control Board, Kolkata, 700107, India; Marine Biological Laboratory, Andhra University, Visakhapatnam, 530003, India; Centre for Marine Living Resource and Ecology, Kochi, 682037, India; National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Goa, India
推荐引用方式 GB/T 7714	Chari N.V.H.K.,Pandi S.R.,Kanuri V.V.,et al. Structural variation of coloured dissolved organic matter during summer and winter seasons in a tropical estuary: A case study[J],2019,149.
APA	Chari N.V.H.K.,Pandi S.R.,Kanuri V.V.,&Basuri C.K..(2019).Structural variation of coloured dissolved organic matter during summer and winter seasons in a tropical estuary: A case study.Marine Pollution Bulletin,149.
MLA	Chari N.V.H.K.,et al."Structural variation of coloured dissolved organic matter during summer and winter seasons in a tropical estuary: A case study".Marine Pollution Bulletin 149(2019).