scholarly journals A graphene-based hydrogel monolith with tailored surface chemistry for PFAS passive sampling

2021 ◽  
Author(s):  
Jitka Becanova ◽  
Zachary Saleeba ◽  
Aidan Stone ◽  
Robert Hurt ◽  
Anna Ruth Robuck ◽  
...  
Keyword(s):  
Surface Water ◽  
Surface Chemistry ◽  
Passive Sampling ◽  
Health Concerns ◽  
Current Health ◽  
Aquatic Contamination ◽  
Regulatory Limits ◽  
Health Advisories

Aquatic contamination by per- and polyfluorinated alkyl substances (PFAS) has attracted global attention due to their environmental and health concerns. Current health advisories and surface water regulatory limits require PFAS...

scholarly journals Development of passive sampler POCIS for the analysis of polar pesticides in surface water

2015 ◽  
Vol 18 (2) ◽  
pp. 132-144
Author(s):  
Trang Thi Nhu Tran ◽  
Ty Thi Pham ◽  
Hai Lam Son Truong
Keyword(s):  
Surface Water ◽  
Environmental Factors ◽  
Pesticide Residues ◽  
Passive Sampling ◽  
Sampling Method ◽  
Passive Sampler ◽  
Polar Pesticides ◽  
Sampling Process ◽  
European Standards ◽  
First Time

The first time in Vietnam a passive sampling method has been developed to analyse the polar pesticides in surface water. The initial investigations of POCIS were performed for 7 polar pesticides as simazine,thiodicarb, carbofuran, chlortoluron, atrazine, isoproturon, and diuron. We determined the sampling rates RS for these substances ranged from 0.369 to 0.962 L day- 1. The obtained values of ku and RS showed the important influence of environmental factors such as flow on the ability to integrate polar pesticides in passive sampling process. This method can be applied to determine these 7 polar pesticides in surface water at trace levels according to European standards for pesticide residues in water (< 0.1 μg L-1).

scholarly journals Geogenic and anthropogenic interactions at a former Sb mine: environmental impacts of As and Sb

2020 ◽  
Vol 42 (11) ◽  
pp. 3911-3924 ◽  
Author(s):  
Lenka Mbadugha ◽  
Duncan Cowper ◽  
Sapar Dossanov ◽  
Graeme I. Paton
Keyword(s):  
Surface Water ◽  
Concentration Distribution ◽  
Geochemical Processes ◽  
Environmental Standards ◽  
Run Off ◽  
Ore Processing ◽  
Regulatory Limits ◽  
Derelict Mine ◽  
Historic Mining ◽  
Spoil Heaps

Abstract Mining activities are acknowledged to introduce contaminants into localised environments and cause wider spread diffuse pollution. The concentration, distribution and fate of arsenic (As) and antimony (Sb) were studied at the former metalliferous Louisa Mine at Glendinning, Scotland. Soils and surface water were sampled and subsequently analysed to map the distribution of contamination and identify pollution sources. The maximum concentrations of As and Sb of 15,490 and 1504.2 mg kg−1, respectively, were determined in soils associated with the ore processing area and spoil heaps. The fractions of dissolved As and Sb in soils were < 1 and < 5% of total soil content, respectively, confirming findings of previous studies that As and Sb are relatively immobile. Yet, the concentrations of As and Sb released by soils exceeded regulatory limits. Concentrations of As and Sb in surface water in the immediate vicinity of the mine were impacted by a gully discharge, but rapidly diluted. While the concentrations affected by the run-off waters did not exceed EU environmental standards for freshwater, the concentrations of both, As and Sb, sharply increased above the said environmental standards approximately 100 m downstream of the mine site. The unaltered As-to-Sb ratio in water samples suggests a geogenic source. While there is a justifiable concern about the soil pollution caused by the historic mining in the area, the Glenshanna Burn is affected more by indigenous geochemical processes than the derelict mine.

scholarly journals Prevalence of pesticides in Krško-Brežice polje aquifer

Geologija ◽  
2021 ◽  
Vol 64 (2) ◽  
pp. 267-288
Author(s):  
Nina MALI ◽  
Anja KOROŠA ◽  
Janko URBANC
Keyword(s):  
Surface Water ◽  
Passive Sampling ◽  
Sampling Method ◽  
Agricultural Land ◽  
Plant Protection ◽  
Degradation Products ◽  
Plant Protection Products ◽  
The Past ◽  
Groundwater Samples ◽  
The World

Groundwater pollution with pesticides is a problem that occurs all over the world as well as in Slovenia. Considering the past high loads of groundwater with pesticides, the purpose of the presented research was to determine the presence of pesticides in the groundwater of Krško-Brežiško polje in the period 2018-2019 and to check the applicability of the passive sampling method. A total of 21 groundwater samples were taken at 11 locations and 2 samples each in the Sava and Krka rivers. We identified 15 pesticides and their degradation products. Atrazine and its degradation product desethylatrazine were most frequently determined in groundwater samples. They are followed by desethylterbutylazine, terbutylazine, metolachlor and simazine. Atrazine, desethylatrazine, chlortoluron, metolachlor and terbuthylazine were detected in surface water. A total of 24 samples were taken in groundwater and surface water using the qualitative passive sampling method. We singled out 8 pesticides that appear in two campaigns. The frequency and occurrence of individual pesticides by both methods are comparable. Passive sampling has proven to be an appropriate method of identifying the presence of pesticides. The highest loads in the Krško-Brežiško field arise from the agricultural land areas. Groundwater is more contaminated with pesticides in the central part of the field in the direction of groundwater flow from west to east. In the groundwater of the Krško-Brežice field, atrazine and desethylatrazine are still the most frequently detected pesticides with higher concentrations, despite a 20 years long ban on the use of atrazine-based plant protection products.

scholarly journals Passive sampling and benchmarking to rank HOC levels in the aquatic environment

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ian John Allan ◽  
Branislav Vrana ◽  
Jasperien de Weert ◽  
Alfhild Kringstad ◽  
Anders Ruus ◽  
...  
Keyword(s):  
Surface Water ◽  
Organic Contaminants ◽  
Passive Sampling ◽  
Point Sources ◽  
Water Bodies ◽  
Contaminant Fate ◽  
Chemical Monitoring ◽  
Innovative Methodology ◽  
Contamination Levels ◽  
Atmospheric Concentrations

AbstractThe identification and prioritisation of water bodies presenting elevated levels of anthropogenic chemicals is a key aspect of environmental monitoring programmes. Albeit this is challenging owing to geographical scales, choice of indicator aquatic species used for chemical monitoring, and inherent need for an understanding of contaminant fate and distribution in the environment. Here, we propose an innovative methodology for identifying and ranking water bodies according to their levels of hydrophobic organic contaminants (HOCs) in water. This is based on a unique passive sampling dataset acquired over a 10-year period with silicone rubber exposures in surface water bodies across Europe. We show with these data that, far from point sources of contamination, levels of hexachlorobenzene (HCB) and pentachlorobenzene (PeCB) in water approach equilibrium with atmospheric concentrations near the air/water surface. This results in a relatively constant ratio of their concentrations in the water phase. This, in turn, allows us to (i) identify sites of contamination with either of the two chemicals when the HCB/PeCB ratio deviates from theory and (ii) define benchmark levels of other HOCs in surface water against those of HCB and/or PeCB. For two polychlorinated biphenyls (congener 28 and 52) used as model chemicals, differences in contamination levels between the more contaminated and pristine sites are wider than differences in HCB and PeCB concentrations endorsing the benchmarking procedure.

Chemcatcher® and DGT passive sampling devices for regulatory monitoring of trace metals in surface water

2008 ◽  
Vol 10 (7) ◽  
pp. 821 ◽  
Author(s):  
Ian J. Allan ◽  
Jesper Knutsson ◽  
Nathalie Guigues ◽  
Graham A. Mills ◽  
Anne-Marie Fouillac ◽  
...  
Keyword(s):  
Surface Water ◽  
Trace Metals ◽  
Passive Sampling

The “Minsk Phenomenon:” demographic development in the Republic of Belarus

2016 ◽  
Vol 44 (6) ◽  
pp. 919-931
Author(s):  
David R. Marples
Keyword(s):  
Industrial Development ◽  
Capital City ◽  
Basic Form ◽  
Demographic Development ◽  
Urban Centers ◽  
Health Concerns ◽  
Current Health ◽  
Starting Point ◽  
The Republic ◽  
German Historian

This paper returns to a topic the author dealt with in a more basic form some years ago. But it also makes an attempt to conceptualize the development of independent Belarus through its population migration to urban centers and especially its capital city, a development that dates exclusively from the post-1945 period, but that paradoxically has prevented this republic from experiencing the sort of modernization processes evident elsewhere in Europe. It takes as its starting point the pioneering work by the German historian Thomas Bohn (Bon/Bohn 2013) titledThe Minsk Phenomenonand develops it further by linking it to demographic issues, current health concerns, and problems in industrial development.

Sign in / Sign up

Export Citation Format

Share Document