Found 10006 publications. Showing page 174 of 401:
2006
2008
2015
Mercury in air and soil on an urban-rural transect in East Africa
There are large knowledge gaps concerning concentrations, sources, emissions, and spatial trends of mercury (Hg) in the atmosphere in developing regions of the Southern Hemisphere, particularly in urban areas. Filling these gaps is a prerequisite for assessing the effectiveness of international regulation and for enabling a better understanding of the global transport of Hg in the environment. Here we use a passive sampling technique to study the spatial distribution of gaseous elemental Hg (Hg(0), GEM) and assess emission sources in and around Dar es Salaam, Tanzania's largest city. Included in the study were the city's main municipal waste dumpsite and an e-waste processing facility as potential sources of GEM. To complement the GEM data and for a better overview of the Hg contamination status of Dar es Salaam, soil samples were collected from the same locations where passive air samplers were deployed and analysed for total Hg. Overall, GEM concentrations ranged between <0.86 and 5.34 ng m−3, indicating significant local sources within the urban area. The municipal waste dumpsite and e-waste site had GEM concentrations elevated above the background, at 2.41 and 1.77 ng m−3, respectively. Hg concentrations in soil in the region (range 0.0067 to 0.098 mg kg−1) were low compared to those of other urban areas and were not correlated with atmospheric GEM concentrations. This study demonstrates that GEM is a significant environmental issue in the urban region of Dar es Salaam. Further studies from urban areas in the Global South are needed to better identify sources of GEM.
2022
2006
Mercury emissions inventory for the Abu Dhabi Emirate. Executive summary of the inventory and projections. NILU report
2016
2005
2016
2015
This report represents the final version of Deliverable D2.2 on existing statistical data on activities in the relevant economic sectors, abatement measures and scoping.
2015
2014
2010
Exposure to mercury (Hg) is a global concern, particularly among Arctic populations that rely on the consumption of marine mammals and fish which are the main route of Hg exposure for Arctic populations.The MercuNorth project was created to establish baseline Hg levels across several Arctic regions during the period preceding the Minamata Convention. Blood samples were collected from 669 pregnant women, aged 18–44 years, between 2010 and 2016 from sites across the circumpolar Arctic including Alaska (USA), Nunavik (Canada), Greenland, Iceland, Norway, Sweden, Northern Lapland (Finland) and Murmansk Oblast (Russia). Descriptive statistics were calculated, multiple pairwise comparisons were made between regions, and unadjusted linear trend analyses were performed.Geometric mean concentrations of total Hg were highest in Nunavik (5.20 µg/L) and Greenland (3.79 µg/L), followed by Alaska (2.13 µg/L), with much lower concentrations observed in the other regions (ranged between 0.48 and 1.29 µg/L). In Nunavik, Alaska and Greenland, blood Hg concentrations have decreased significantly since 1992, 2000 and 2010 respectively with % annual decreases of 4.7%, 7.5% and 2.7%, respectively.These circumpolar data combined with fish and marine mammal consumption data can be use
2021
2024
2011
The MEMORI project (Grant agreement 265132) was performed in the period 2010-2013. The project was coordinated by NILU-Norwegian Institute for Air Research, and included 14 partners, four subcontractors and an advisory end-user group with 8 members. MEMORI aimed at providing the conservation market with innovative, non-destructive, and early warning technology for easy assessment of environmental impact on indoor cultural heritage. For this purpose, a dosimeter and a portable reader instument were produced. In addition, a new web-based result's and presentation mitigation tool was developed.
2014
Melkøya ferskvann, nedbør, vegetasjon og jord 2024
I 2024 var det igjen tid for den tradisjonelle overvåkningen av ferskvann. I forbindelse med endringer i produksjonen og mulige økte utslipp av kvikksølv ble det gjort enkelte endringer i programmet for ferskvann samtidig som det ble iverksatt undersøkelser av kvikksølv (Hg), bly (Pb) og polysykliske aromatiske hydrokarboner (PAH) i nedbør, vegetasjon og jord. I det nye programmet er det god samlokalisering mellom prøvetakingsstasjoner for ferskvann, nedbør, vegetasjon og jordprøver.
Det ble gjennomført innsamling av prøver i ferskvann, nedbør, vegetasjon og jord fra starten av september.
Akvaplan-niva
2025
2010