scholarly journals Assessment of Pollution Levels of Suspended Particulate Matter on an Hourly and a Daily Time Scale in West African Cities: Case Study of Ouagadougou (Burkina Faso)

2020 ◽  
Vol 08 (11) ◽  
pp. 119-138
Author(s):  
Issoufou Ouarma ◽  
Bernard Nana ◽  
Kayaba Haro ◽  
Antoine Béré ◽  
Jean Koulidiati
Keyword(s):  
Particulate Matter ◽  
Burkina Faso ◽  
Suspended Particulate Matter ◽  
Time Scale ◽  
West African ◽  
African Cities ◽  
Pollution Levels ◽  
Suspended Particulate ◽  
Daily Time

scholarly journals Assessing glyphosate in water, marine particulate matter, and sediments in the Lagoon of Venice

2021 ◽  
Author(s):  
Matteo Feltracco ◽  
Elena Barbaro ◽  
Elisa Morabito ◽  
Roberta Zangrando ◽  
Rossano Piazza ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Suspended Particulate Matter ◽  
Water Environment ◽  
Venice Lagoon ◽  
Lagoon Of Venice ◽  
Agricultural Chemicals ◽  
Sediment Samples ◽  
Lagoon Water ◽  
Pollution Levels ◽  
Suspended Particulate

Abstract Lagoon water, suspended particulate matter, and sediment samples from seven sites at Lagoon of Venice were collected from 2019 to 2021 in order to study the presence of the herbicide glyphosate (N-(phosphonomethyl)glycine), among the most widely used agricultural chemicals worldwide, but its occurrence in lagoon water environment has not been deeply investigated. The sites were selected considering a supposed diversity of inputs and of pollution levels. An analytical method based on ion chromatography coupled with tandem mass spectrometry was optimized and validated for lagoon water, marine particulate matter, and sediment samples. Maximum concentrations of glyphosate were 260 and 7 ng L−1 for lagoon water and suspended particulate matter, respectively, and 15 ng g−1 for sediment, with some spatial and temporal fluctuations. Our results demonstrate that glyphosate content in the Venice Lagoon mainly depends on external forcing from river inlets and agricultural lagoon activities.

Mobilization of Mercury from Estuarine Suspended Particulate Matter: A Case Study in the Yalujiang Estuary, Northeast China

1995 ◽  
Vol 30 (1) ◽  
pp. 25-32 ◽  
Author(s):  
Chen Jingsheng ◽  
Tang Fei ◽  
Wang Feiyue
Keyword(s):  
Particulate Matter ◽  
Suspended Particulate Matter ◽  
Cross Sections ◽  
Northeast China ◽  
Field Observations ◽  
Suspended Material ◽  
Suspended Particulates ◽  
Suspended Particulate ◽  
Physical Mixing

Abstract Trace metal concentrations in suspended particulate matter in estuaries are dependent on the extent of mixing between river and seawater. Superimposed on this physical mixing, chemical mobilization from the particulates may take place. This paper presents the behavior of mercury in the Yalujiang estuary, northeast China. It deals with (i) field observations on the variations of mercury concentrations in the estuarine suspended material and (ii) the experimental mobilization of mercury from contaminated estuarine sediment by exposure to artificial seawater. Three stations on two cross sections in the upper and lower Yalujiang estuary were sampled over at least two or three complete tidal cycles. The field observations show that there is a clear mobilization of mercury from the suspended material during the maximum mixing of river and seawater. The experimental mobilization suggests that mobilization of mercury from the suspended particulates in seawater is caused not only by complexing with CI’ and ion-exchanging with the alkali and alkaline earth cations in seawater, but also by the dissolution of humic substances in the particles by seawater and the release of associated mercury.

Sign in / Sign up

Export Citation Format

Share Document