نتایج جستجو برای: suspended particulate materials spm

تعداد نتایج: 483306  

2016
Masanari Watanabe Hisashi Noma Jun Kurai Degejirihu Hantan Naoto Burioka Sachiko Nakamoto Hiroyuki Sano Jumpei Taniguchi Eiji Shimizu

Outdoor fungi are important components of airborne particulate matter (PM). However, the associations between pulmonary function and outdoor fungi are less well known compared to other airborne PM constituents. The objective of this study was to investigate the association between outdoor fungi and pulmonary function in children. Morning peak expiratory flow (PEF) rates were measured daily in 3...

2013
Eldred Tunde Taylor Satoshi Nakai

Wood and charcoal fuels, widely used in Sierra Leone for cooking, may impact indoor air quality. Until now, there is presently lack of data to quantify the extent of impact. In this study, concentrations of polycyclic aromatic hydrocarbons (PAHs), suspended particulate matter (SPM) and carbon monoxide (CO) were measured in kitchens with wood and charcoal stoves during cooking in rural areas. PA...

2015
Yuyun Chen Rui Jia Shengke Yang Miklas Scholz

Weihe River is a typical river located in the arid and semi-arid regions of Northwest China. In this study, the distribution and sources of 16 polycyclic aromatic hydrocarbons (PAHs) in Weihe River were investigated. The concentrations of ∑PAHs ranged from 351 to 4427 ng/L with a mean value of 835.4 ng/L in water dissolved phase (WDP), from 3557 ng/L to 147,907 ng/L with a mean value of 20,780 ...

Journal: :Journal of Hydrology 2021

The suspended particulate matter (SPM) carried by the rivers shows a wide range of particle size classes, mineralogical and chemical compositions is mainly influenced hydrodynamic sorting provenance during transport. Here, we have investigated composition SPM in Sava River its tributaries (Ljubljanica, Savinja Krapina) using time-integrated sediment sampler (TIMS). representativeness material c...

2015
Jung-Hyun Kim Wolfgang Ludwig Roselyne Buscail Denise Dorhout Jaap S. Sinninghe Damsté

In this study, we investigated soils and river suspended particulate matter (SPM) collected in the Rhône and its tributary basins as well as marine surface sediments taken in the Rhône prodelta (Gulf of Lions, NW Mediterranean). Thereby, we traced the signal of branched glycerol dialkyl glycerol tetraethers (brGDGTs) from the source to sink via the Rhône River and its tributaries and identified...

2010
Avnish Chauhan Mayank Pawar Rajeev Kumar P. C. Joshi

This paper examines the significant differences in seasonal variations of air pollutants concentrations at urban, industrial, commercial and agricultural areas of Uttarakhand. PM10 (RSPM), suspended particulate matter (SPM), sulphur dioxide (SO2) and oxides of nitrogen (NOx) were collected over four sites in Haridwar and Dehradun Valley, Uttarakhand. The first one, Shivalik Nagar, Haridwar is a...

2001
Alejandro J. Souza Tommy D. Dickey Grace C. Chang

The present contribution is motivated by the desire to elucidate the processes that contributed to the evolution of observed thermal structure and resuspension of particulate matter during and after the passages of two hurricanes, Edouard and Hortense, within a two-week period in late-summer 1996. A unique set of high temporal frequency measurements of the vertical structures of physical and op...

2017
Rocío Inés Bonansea Iohanna Filippi Daniel Alberto Wunderlin Damián José Gabriel Marino María Valeria Amé

Glyphosate is the most widely used herbicide worldwide. However, there are some uncertain aspects with respect to its environmental fate. To evaluate the existence and distribution of this pesticide and its metabolite, aminomethylphosphonic acid (AMPA), their presence in fresh water, sediment, and suspended particulate matter (SPM) was measured in samples collected in a river running across a l...

2016
Michael Alonzo Jamon Van Den Hoek Nabil Ahmed

The socio-ecological impacts of large scale resource extraction are frequently underreported in underdeveloped regions. The open-pit Grasberg mine in Papua, Indonesia, is one of the world's largest copper and gold extraction operations. Grasberg mine tailings are discharged into the lowland Ajkwa River deposition area (ADA) leading to forest inundation and degradation of water bodies critical t...

Journal: :Progress in Earth and Planetary Science 2022

Abstract The release of neodymium (Nd) from particles along continental margins may contribute to losses in the global Nd budget. Changjiang River, which carries a heavy load total suspended matter, empties into East China Sea, and strong particulate–seawater interaction process occurs salinity gradient. In low-salinity region ( S < 2.0), removal dissolved rare earth elements (dREEs) occurs,...

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