Tracing fluorescent dissolved organic matter (fDOM) characteristics and water quality parameters: Insights from an urban industrial river to marine zone DOI

Md. Abid Azad Sakib,

O F Miah,

Nahin Mostofa Niloy

et al.

Water Environment Research, Journal Year: 2024, Volume and Issue: 96(9)

Published: Sept. 1, 2024

Abstract This study aims to identify continuous water quality changes and fluorescence properties from urban rivers marine zones. Various types of natural anthropogenic sources derived dissolved organic matter (DOM) have been identified in this study. These include soil‐derived DOM, plant remnants, soluble particles produced when material partially decomposes is released by microorganisms, such as bacteria, algae, plants. DOM was characterized using a three‐dimensional excitation–emission matrix (3DEEM), parallel factor analysis (PARAFAC), parameters the Buriganga River, Dhaka Patenga Seaport, Chittagong, along with Shitalakshya small portion Padma Meghna River. To better understand data analysis, area divided into three central regions: industrial rivers, estuarine In river, 3DEEM PARAFAC five fluorophores (peaks: A, C, M, T, T uv ) components: detergent‐like, fulvic‐like, tryptophan or protein‐like, fulvic‐like (C‐type), which might originate activities sewage pollution. river zone, two known components, namely, fulvic acid (A‐type) an unknown photoproduct at Ex/Em = 295/368 (peak ). Components zone may terrestrial sources, indicating vegetation river. four , C) that is, protein‐ tryptophan‐like humic acid‐like coral origin. The intensities both protein‐like substances were high owing activity SUVA 254 suggests aromaticity all regions, whereas optical suggest microbial components are present rivers. further indicates highly polluted. lowest degradation potential index (DPI) result presence highest number solids water, DPI explains comparatively terrestrial‐derived (A)‐ (C)‐like ratio mid‐wavelength. Practitioner Points study's uniqueness 220‐km cruise coastal seaport analyze properties. found most within DoE standards, except for DO, consistently low. 3DEEM‐PARAFAC linked detergent, fulvic, sources. Our concludes dominate urban, estuarine, regions.

Language: Английский

A novel chemometric coupling technique combined with HPLC-DAD for rapid quantification and source apportionment of monoaromatic hydrocarbons in soil samples DOI
Zhen Zhang,

You Wang,

Xueqi Li

et al.

Microchemical Journal, Journal Year: 2025, Volume and Issue: unknown, P. 112881 - 112881

Published: Jan. 1, 2025

Language: Английский

Citations

0
Epigenetic and Gene Expression Responses of Daphnia magna to Polyethylene and Polystyrene Microplastics DOI Creative Commons
Hyungjoon Im, Jieun Lee,

Jeong‐Eun Oh

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(7), P. 1608 - 1608

Published: April 3, 2025

Microplastics (MPs), ubiquitous environmental pollutants, pose substantial threats to aquatic ecosystems and organisms, including the model species Daphnia magna. This study examined effects of polyethylene (PE) polystyrene (PS) MPs on D. magna, focusing their ingestion, epigenetic alterations, transcriptional responses. Exposure experiments revealed a concentration-dependent accumulation MPs, with PS particles showing higher ingestion rates due density propensity for aggregation. Epigenetic analyses demonstrated that exposure PE significantly reduced global DNA methylation (5-mC) suggesting hypomethylation as potential stress response. Conversely, hydroxymethylation (5-hmC) magna displayed variability under exposure. Transcriptional analysis identified marked downregulation Vitellogenin 1 (v1) upregulation Ecdysone Receptor B (ecr-b), highlighting occurrence stress-related adaptive molecular These findings enhance our understanding offering critical insights development effective management conservation strategies in face escalating MP pollution.

Language: Английский

Citations

0
Tracing fluorescent dissolved organic matter (fDOM) characteristics and water quality parameters: Insights from an urban industrial river to marine zone DOI

Md. Abid Azad Sakib,

O F Miah,

Nahin Mostofa Niloy

et al.

Water Environment Research, Journal Year: 2024, Volume and Issue: 96(9)

Published: Sept. 1, 2024

Abstract This study aims to identify continuous water quality changes and fluorescence properties from urban rivers marine zones. Various types of natural anthropogenic sources derived dissolved organic matter (DOM) have been identified in this study. These include soil‐derived DOM, plant remnants, soluble particles produced when material partially decomposes is released by microorganisms, such as bacteria, algae, plants. DOM was characterized using a three‐dimensional excitation–emission matrix (3DEEM), parallel factor analysis (PARAFAC), parameters the Buriganga River, Dhaka Patenga Seaport, Chittagong, along with Shitalakshya small portion Padma Meghna River. To better understand data analysis, area divided into three central regions: industrial rivers, estuarine In river, 3DEEM PARAFAC five fluorophores (peaks: A, C, M, T, T uv ) components: detergent‐like, fulvic‐like, tryptophan or protein‐like, fulvic‐like (C‐type), which might originate activities sewage pollution. river zone, two known components, namely, fulvic acid (A‐type) an unknown photoproduct at Ex/Em = 295/368 (peak ). Components zone may terrestrial sources, indicating vegetation river. four , C) that is, protein‐ tryptophan‐like humic acid‐like coral origin. The intensities both protein‐like substances were high owing activity SUVA 254 suggests aromaticity all regions, whereas optical suggest microbial components are present rivers. further indicates highly polluted. lowest degradation potential index (DPI) result presence highest number solids water, DPI explains comparatively terrestrial‐derived (A)‐ (C)‐like ratio mid‐wavelength. Practitioner Points study's uniqueness 220‐km cruise coastal seaport analyze properties. found most within DoE standards, except for DO, consistently low. 3DEEM‐PARAFAC linked detergent, fulvic, sources. Our concludes dominate urban, estuarine, regions.

Language: Английский

Citations

1