Connecting pigment composition and dissolved trace elements to phytoplankton population in the southern Benguela Upwelling zone (St. Helena Bay)

2017 ◽  
Vol 176 ◽  
pp. 13-23
Author(s):  
Supriyo Kumar Das ◽  
Joyanto Routh ◽  
Alakendra N. Roychoudhury ◽  
Marcel J.W. Veldhuis ◽  
Hassan E. Ismail
Keyword(s):  
Trace Elements ◽  
Pigment Composition ◽  
Phytoplankton Population ◽  
Benguela Upwelling ◽  
St Helena ◽  
Dissolved Trace Elements

Biogeochemical Controls on Dissolved Trace Elements in Rivers

1998 ◽  
Vol 62A (3) ◽  
pp. 1391-1392 ◽  
Author(s):  
A. M. Shiller
Keyword(s):  
Trace Elements ◽  
Dissolved Trace Elements

scholarly journals Transport of dissolved trace elements in surface runoff and leachate from a Coastal Plain soil after poultry litter application

2013 ◽  
Vol 68 (3) ◽  
pp. 212-220 ◽  
Author(s):  
L. C. Kibet ◽  
A. L. Allen ◽  
C. Church ◽  
P. J. A. Kleinman ◽  
G. W. Feyereisen ◽  
...  
Keyword(s):  
Trace Elements ◽  
Coastal Plain ◽  
Surface Runoff ◽  
Poultry Litter ◽  
Dissolved Trace Elements ◽  
Coastal Plain Soil

scholarly journals Are sustainable drainage systems (SuDS) systems effective at retaining dissolved trace elements?

2021 ◽  
pp. 1-40
Author(s):  
Jasmine Humphrey ◽  
Chris Rowett ◽  
Jonathan Tyers ◽  
Mark Gregson ◽  
Sean Comber
Keyword(s):  
Trace Elements ◽  
Drainage Systems ◽  
Sustainable Drainage Systems ◽  
Dissolved Trace Elements

scholarly journals Surface and Groundwater Pollution: the Invisible, Creeping Threat to Human Health

2020 ◽  
Vol 16 (1) ◽  
pp. 157-169
Author(s):  
Hammad Ahmed Shah ◽  
Muhammad Sheraz ◽  
Afed Ullah Khan ◽  
Fayaz Ahmad Khan ◽  
Liaqat Ali Shah ◽  
...  
Keyword(s):  
Trace Elements ◽  
Health Risk ◽  
Human Health ◽  
Surface Waters ◽  
Best Management Practices ◽  
Control Point ◽  
Human Health Risk ◽  
Adults And Children ◽  
Surface And Groundwater ◽  
Dissolved Trace Elements

AbstractThis study reports pollution source apportionment of surface waters and human health risk assessment based on 18 physicochemical and traces elements from 24 water quality monitoring sites for surface and groundwater around the two trans-boundary rivers of Pakistan: The Ravi and Sutlej. The principal component analysis identified 6 principal components (76.98 % cumulative variance) which are mainly caused by untreated industrial effluents, intense agricultural activities, and irrigation tailwater discharges. For all dissolved trace elements in surface waters, health hazard indices (HI) and hazard quotients (HQ) through ingestion and dermal contact are < 1 except As and Cr through ingestion only (for both adults and children). For adults and children, the HQingestion and HI values for As, Mn, Cu (for children only) and As, Fe, Mn (for children only) are > 1, indicating that As, Mn, Fe, and Cu are the most important pollutants causing chronic risks among the selected trace elements in both shallow and deep groundwater respectively. HQingestion, HQdermal, and HI values are higher for children than that of adults which shows the high susceptibility of children to these dissolved trace elements. The carcinogenic indices for the entire surface water elements exceed 10−6 through dermal and ingestion pathways suggesting carcinogenic health risk to the surrounding community. Hence, to protect human health, wastewater treatment plants and best management practices should be practiced to control point source and nonpoint source pollution respectively in the understudied area.

scholarly journals Distribution characteristics, enrichment patterns and health risk assessment of dissolved trace elements in river water in the source region of the Yangtze River

2021 ◽  
Author(s):  
Min Liu ◽  
Liangyuan Zhao ◽  
Qingyun Li ◽  
Yuan Hu ◽  
Huawei Huang ◽  
...  
Keyword(s):  
Trace Elements ◽  
Yangtze River ◽  
Water Resource Management ◽  
Source Region ◽  
Regional Distribution ◽  
Water Environment ◽  
Average Concentration ◽  
Distribution Characteristics ◽  
The Yangtze River ◽  
Dissolved Trace Elements

Abstract The security of water environment in the source region of the Yangtze River (SRYR) is also vital to the water environment security of the whole basin. The results showed that the rivers in the SRYR were weakly alkaline and the values of total solid solubility (TDS), electrical conductivity (EC), turbidity concentration and salinity were higher than the values in the middle and lower reaches of the Yangtze River. The results showed that the dissolved trace elements detected displayed obvious regional distribution characteristics, showing a concentration trend of high in the Chumar River, low in the Dangqu, and middle in Tong River. All water quality indexes in the SRYR met the surface water environmental quality standard of class II based on GB 3838-2002 except Hg, while the average concentration of As exceeded 10 μg/L. The main enrichment elements in the SRYR were Li, Se, As and Pb, and their concentrations were far higher than the average concentration of the world rivers. Moreover, the HI and HQingrstion of children caused by As in the SRYR were greater than 1. This study could provide basic data for water environment protection and water resource management in the SRYR.

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