scholarly journals Using Passive Samplers to Track per and Polyfluoroalkyl Substances (PFAS) Emissions From the Paper Industry: Laboratory Calibration and Field Verification

2021 ◽  
Vol 9 ◽  
Author(s):  
Sarah E. Hale ◽  
Baptiste Canivet ◽  
Thomas Rundberget ◽  
Håkon A. Langberg ◽  
Ian J. Allan
Keyword(s):  
Paper Industry ◽  
River System ◽  
Passive Samplers ◽  
Organic Chemical ◽  
Monitoring Methods ◽  
Nylon Membrane ◽  
Sampling Campaign ◽  
Laboratory Calibration ◽  
Perfluorooctanesulfonic Acid ◽  
Polyfluoroalkyl Substances

Per and polyfluoroalkyl substances (PFAS) are becoming more stringently regulated and as such, a more diverse suite of environmental monitoring methods is needed. In this work a polar organic chemical integrative sampler (POCIS) with a nylon membrane and a combination of Oasis WAX and Fluoroflash® sorbents was calibrated in the laboratory and deployed in the field. A static renewal system was used to determine sampling rates for 12 PFAS which ranged between 0.69 ± 0.27 to 5.68 ± 1.80 L/day. POCIS devices were deployed for 10 days in lake Tyrifjorden, Norway which is known to be contaminated by a closed down factory producing paper products, in order to track the evolution of the PFAS contamination in a river system draining into the lake. Th sampling campaign enabled the stretch of the river which was responsible for the emissions of PFAS to lake Tyrifjorden to be identified. Freely dissolved concentrations determined with the POCIS were lowest at the site considered to reflect a diffuse PFAS contamination and highest at the site located downstream the factory. Perfluorooctanesulfonic acid (PFOS), perfluorohexanoic acid (PFHxA) and perfluorooctane sulfonamidoacetic acid (EtFOSAA) dominated the concentration profile at this site. Emissions of PFAS to lake Tyrifjorden were estimated to be 3.96 g/day for the sum of the 12 investigated PFAS.

scholarly journals Microbiological Pollution Level and Seasonal Variations in Physicochemical Parameters of the River Buriganga, Dhaka

2016 ◽  
Vol 29 (1) ◽  
pp. 11-15
Author(s):  
Md Abdul Karim ◽  
Rehena Nasrin Happy ◽  
Md Saifur Rasul ◽  
Sirajul Hoque
Keyword(s):  
River System ◽  
Bacterial Count ◽  
Enteric Bacteria ◽  
Field Investigation ◽  
Quality Parameters ◽  
Pollution Level ◽  
Organic Chemical ◽  
Substantial Part ◽  
Sample Collection ◽  
Urban Sewage

The Buriganga is one of the highly polluted rivers in Bangladesh. Most of the industries and factories of Dhaka are situated on the banks of the river Buriganga or very close to the river system. Substantial part of urban sewage of the Dhaka city is also disposed in the river Buriganga. The study was conducted to determine the pollution level of water of river Buriganga. Field investigation was started from May 2010 and sample collection was conducted in different seasons up to June 2011. Various water quality parameters such as pH, DO, BOD, COD, TDS, Conductivity, Alkalinity, NO2 --N, NO3 --N, NH4+-N and PO4 -, were determined for water of each sampling points to monitor the level of these parameters where it exceeds or remain within the permissible limit. DO concentration of water of river Buriganga was very low ranging between 0.04 and 2.25 mg/l. The aerobic heterotrophic bacterial count ranged between 1.0 × 107 and 2.0 × 108 cfu/100 ml. The highest count of enteric bacteria was noticed during the autumn that was 2.0 × 105 cfu/100 ml. BOD and COD values along with the presence of different species of bacteria clearly indicated that the water of the river Buriganga is highly polluted with the organic, chemical and bacterial pollutants.Bangladesh J Microbiol, Volume 29, Number 1, June 2012, pp 11-15

scholarly journals Air concentrations and particle–gas partitioning of polyfluoroalkyl compounds at a wastewater treatment plant

2011 ◽  
Vol 8 (4) ◽  
pp. 363 ◽  
Author(s):  
Lena Vierke ◽  
Lutz Ahrens ◽  
Mahiba Shoeib ◽  
Eric J. Reiner ◽  
Rui Guo ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Air Sampling ◽  
Passive Samplers ◽  
Aeration Tank ◽  
Sampling Campaign ◽  
Secondary Clarifier ◽  
Polyfluoroalkyl Compounds ◽  
Air Concentrations

Environmental contextPolyfluoroalkyl compounds, widely used chemicals in consumer and industrial products, are global pollutants in the environment. Transport mechanisms and environmental pathways of these compounds, however, are not yet fully understood. We show that a wastewater treatment plant can be an important source for polyfluoroalkyl compounds to the atmosphere where they have the potential to be transported long distances. AbstractAn air sampling campaign was conducted at a wastewater treatment plant (WWTP) to investigate air concentrations and particle–gas partitioning of polyfluoroalkyl compounds (PFCs). Samples were collected at an aeration tank and a secondary clarifier using both active high volume samplers and passive samplers comprising sorbent-impregnated polyurethane foam (SIP) disks. Water to air transport of PFCs was believed to be enhanced at the aeration tank owing to aerosol-mediated transport caused by surface turbulence induced by aeration. Mean air concentrations of target PFCs at the aeration tank were enriched relative to the secondary clarifier by factors of ~19, ~4 and ~3 for ∑fluorotelomer alcohols (FTOHs) (11 000 v. 590 pg m–3), ∑perfluorooctane sulfonamides & perfluorooctane sulfonamidoethanols (FOSAs & FOSEs) (120 v. 30 pg m–3) and ∑perfluoroalkyl carboxylates & perfluoroalkyl sulfonates (PFCAs & PFSAs) (4000 v. 1300 pg m–3) respectively. The particle associated fraction in the atmosphere increased with increasing chain length for PFCAs (from 60 to 100%) and PFSAs were predominantly bound to particles (~98%). Lower fractions on particles were found for FTOHs (~3%), FOSAs (~30%) and FOSEs (~40%). The comparison of the active and passive air sampling showed good agreement.

scholarly journals Water Quality Measurements with a Simple Molecular Analysis (PCR-RFLP) of the Microbiome in a Metropolitan River System in Japan

2019 ◽  
Vol 17 (3) ◽  
pp. 257-268
Author(s):  
Liswara NENENG ◽  
Rudy Agung NUGROHO ◽  
Yukio KOMAI ◽  
Naru TAKAYAMA ◽  
Koji KAWAMURA
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Natural Waters ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Principal Component ◽  
River System ◽  
Universal Primers ◽  
Monitoring Methods ◽  
Pcr Rflp

Urbanization has affected natural freshwater environments by contamination with sewage, toxic chemicals, and excess nutrients, which cause algal bloom, pollution, and ecosystem degradation. To ensure sustainable use of natural waters, appropriate monitoring methods are required. This study aims to investigate the diversity of the microbial community in a metropolitan river system in Japan using a low-cost DNA-based approach, PCR (Polymerase Chain Reaction)-RFLP (Restriction Fragment Length Polymorphism), as a potential bioindicator of environmental change. Surface waters were sampled in seven sites in a river system. Water chemical parameters and concentrations of heavy metals were determined. Microbial DNA was extracted from the samples, ribosomal RNA was amplified with universal primers, and RFLP was scored by agarose gels. Water chemical analyses showed that surface water at the inflow point of a sewage treatment plant had signs of eutrophication. Heavy metal concentrations in surface water were low (< 0.01 ppm) in all sites. The PCR-RFLP analysis showed polymorphisms both in 16S and 18S rRNAs, indicating that the method can detect at least a part of the microbiome changes in a river system. Sequencing of some fragments found the sequence close to a ciliate isolated in wastewater treatment plants, implying contamination from sewage. Principal component analysis (PCA) identified the RFLPs associated with chemical water parameters, which could be bioindicators of environmental pollution. We also found the RFLPs independent of water quality parameters, suggesting that this simple DNA-based analysis can also detect biological changes in water ecosystems that are not quantified by chemical measurements of water quality.

Optimization and Field Demonstration of a Passive Sampling Technology for Monitoring Conventional Munition Constituents in Aquatic Environments

2016 ◽  
Vol 50 (6) ◽  
pp. 23-32 ◽  
Author(s):  
Gunther Rosen ◽  
Bill Wild ◽  
Robert D. George ◽  
Jason B. Belden ◽  
Guilherme R. Lotufo
Keyword(s):  
Military Training ◽  
Weighted Average ◽  
Water Concentration ◽  
Ecological Impacts ◽  
Passive Samplers ◽  
Organic Chemical ◽  
Aquatic Environments ◽  
Munition Constituents ◽  
Safety Considerations ◽  
High Level

AbstractAs a result of military training and weapon testing activities, unexploded ordnance (UXO; including munitions such as bombs, projectiles, and mines that did not function as intended) are present in underwater environments. Munitions are also present at underwater sites as discarded military munitions (DMM). In addition to explosive safety considerations, regulators are increasingly concerned about potential ecological impacts on the aquatic environment following corrosion and breaching shells that may cause the slow release of the explosive material by dissolution to the surrounding sediments and water column. Challenges such as the high level of effort required to identify leaking munitions and potential for slow and intermittent release resulting in ultralow concentrations (i.e., part per trillion) may hinder the assessment of environmental exposures using traditional water sampling and analysis techniques. Recently, integrative passive samplers, specifically polar organic chemical integrative samplers (POCIS), have been demonstrated by our team to be valuable tools for the environmental exposure assessment of munition constituents (MC) in aquatic environments. POCIS can be deployed for weeks to months and continuously sample the water, providing the opportunity to capture episodic events or fluctuations in contaminant release, even at low concentrations. The resulting time-weighted average (TWA) water concentration can then be compared with screening values in the context of ecological risk potential and relevance for remedial action. Our preliminary results from POCIS employed under field conditions indicate that it is a robust approach to understanding and validating the release and transport behaviors of MC and subsequent exposure characterization in the vicinity of potentially breached UXO or DMM in ocean environments.

scholarly journals Bioaccumulation of heavy metals by the flora and benthic macrofauna of the Bouregreg estuary wetland

2018 ◽  
Vol 149 ◽  
pp. 02054
Author(s):  
M. Khamar ◽  
E. Cherkaoui ◽  
A. Nounah
Keyword(s):  
Heavy Metals ◽  
River System ◽  
Benthic Macrofauna ◽  
Organic Chemical ◽  
Benthic Species ◽  
Hediste Diversicolor ◽  
Estuarine Ecosystem ◽  
Water And Sediment ◽  
Dominant Plant Species ◽  
Scrobicularia Plana

Estuarine systems account for a high proportion of wetlands in Morocco due to the development of the river system. These estuarine and coastal Moroccan environments are as rich in fauna and flora as their European equivalents and present much originality. However, these coastal areas are generally highly urbanized and industrialized, and therefore subject to domestic and industrial discharges. The Bouregreg Estuary represents a good example of this situation, in view of this pollution (organic, chemical and biological) and the absence of fresh water supply upstream of the estuary after the dam was built, is increasingly unable of restoring the equilibrium of this ecosystem. This tide can instead ensure the polluting discharge downstream or upstream. Metallic contamination affects the different compartments of the estuarine ecosystem (sediment, water) and benthic species (fauna and flora). The objective of this study is to assess the accumulation and bioaccumulation of five heavy metals (Cu, Fe, Zn, Cr and Pb) at the sediment level of two dominant plant species (Artiplex portulacoides and Sarcocornia fructicosa) and three species of benthic macrofauna (Scrobicularia plana, Venerupis decussata and Hediste diversicolor) from the wetland of this estuary. This work will enable us to clearly understand the nutritional relationships between plant, animal, water and sediment species. The results of the analysis revealed that bioaccumulation varies from one species to another and from one metal to another. Thus, the levels of Lead and Chromium at Sarcocornia fructicosa are higher than those found at Artiplex portulacoides. Nevertheless, the latter accumulates better the other metals: Cu, Zn and Fe. While, the macrofauna shows a fairly large variation depending on the life style and sensitivity of species. Thus, Hediste diversicolor showed high levels of the various metals analyzed compared to Scrobicularia plana and Venerupis decussata.

scholarly journals Comparison of sampling methodologies for nutrient monitoring in streams: uncertainties, costs and implications for mitigation

2014 ◽  
Vol 18 (11) ◽  
pp. 4721-4731 ◽  
Author(s):  
J. Audet ◽  
L. Martinsen ◽  
B. Hasler ◽  
H. de Jonge ◽  
E. Karydi ◽  
...  
Keyword(s):  
Aquatic Ecosystems ◽  
Passive Sampling ◽  
Mitigation Strategies ◽  
Passive Samplers ◽  
Nutrient Load ◽  
Monitoring Methods ◽  
Nitrogen And Phosphorus ◽  
Grab Sampling ◽  
Reliable Monitoring ◽  
Phosphorus Losses

Abstract. Eutrophication of aquatic ecosystems caused by excess concentrations of nitrogen and phosphorus may have harmful consequences for biodiversity and poses a health risk to humans via water supplies. Reduction of nitrogen and phosphorus losses to aquatic ecosystems involves implementation of costly measures, and reliable monitoring methods are therefore essential to select appropriate mitigation strategies and to evaluate their effects. Here, we compare the performances and costs of three methodologies for the monitoring of nutrients in rivers: grab sampling; time-proportional sampling; and passive sampling using flow-proportional samplers. Assuming hourly time-proportional sampling to be the best estimate of the "true" nutrient load, our results showed that the risk of obtaining wrong total nutrient load estimates by passive samplers is high despite similar costs as the time-proportional sampling. Our conclusion is that for passive samplers to provide a reliable monitoring alternative, further development is needed. Grab sampling was the cheapest of the three methods and was more precise and accurate than passive sampling. We conclude that although monitoring employing time-proportional sampling is costly, its reliability precludes unnecessarily high implementation expenses.

scholarly journals Ecological Indicators for Surface Water Quality - Methodological Approaches to Fish Community Assessments in China and Germany

2021 ◽  
pp. 47-67
Author(s):  
Sebastian Beggel ◽  
Joachim Pander ◽  
Jürgen Geist
Keyword(s):  
Fish Community ◽  
Species Abundance ◽  
Surface Water Quality ◽  
River System ◽  
Biological Indicators ◽  
Liaoning Province ◽  
Fish Community Structure ◽  
Catch Per Unit Effort ◽  
Full Spectrum ◽  
Sampling Campaign

AbstractAssessments of aquatic ecosystem health rely increasingly on biological indicators such as fish community structure, but national approaches differ. To use bioindicators efficiently and to allow cross-country comparisons, standardized tools and methods are required. Within this study, currently applied procedures for stream ecosystem assessment in China and Germany are summarized and active and passive fish sampling methodologies used in both countries are investigated. The methodological comparison was based on the results of a joint Chinese German workshops within the SINOWATER project in 2016. A joint sampling campaign was then conducted in 2017 at 6 representative sites within 70 km of the Fan River, a tributary to the Liao River System in Liaoning province, China. Active methods comprised single-pass electrofishing methods as typically applied in Germany and China as well as seining. As passive methods, common minnow traps, gill-netting and longline-fishing were used. To allow the comparability between methods, a standardized sampling design comprising several replicates at each site was chosen, covering a range of different ecological stream conditions. By comparison of the different fishing methodologies, electrofishing yielded the best overall results to assess fish biodiversity in terms of species abundance, richness and catch per unit effort. Differences in the effectiveness of the different electrofishing approaches mostly depended on the power source used. To cover the full spectrum of the fish community and to detect very rare species, a combination of different active and passive methods was most useful. If electrofishing is the method of choice, it is very important to adjust the gear power to river specific conditions such as flow, size and depth. The results of this joint Chinese-German study may aid in the selection of suitable sampling methods for fish community assessments in the future.

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