scholarly journals Field Study for PAH Absorption Performances of Butyl Rubber, PDMS, and SPMD Passive Samplers

2021 ◽  
Author(s):  
Oktay Eren Tureyen ◽  
Sevil Deniz Yakan ◽  
Atilla Yilmaz ◽  
Berkant Yetiskin ◽  
Oguz Okay ◽  
...  
Keyword(s):  
Water Column ◽  
Marine Ecosystem ◽  
Butyl Rubber ◽  
Passive Samplers ◽  
Aquatic Environments ◽  
Water Sampling ◽  
Challenging Tasks ◽  
Polycyclic Aromatic ◽  
Absorption Performance ◽  
Low Solubility

Abstract Polycyclic aromatic hydrocarbons (PAHs) are organic pollutants having various adverse effects on the marine ecosystem. Because of their low solubility in the marine environment, their detection and monitoring in the water column are challenging tasks. Passive samplers are used to detect PAHs in aquatic environments as complementary tools to conventional water sampling. In the present study, PAH absorbance performances of four butyl rubber-based (BR) passive samplers with different structures (SN5, SN10, DN, and TN) and commercialized passive samplers (SPMD and PDMS) were determined. Stainless steel cages containing passive samplers were deployed in the water column in Istinye Bay, Istanbul, and retrieved after 7 and 28 days. Collected samplers were analyzed in the laboratory to determine their PAH contents. Results showed that, even though the SPMD samplers had the highest total PAH content, they were not able to collect PAHs with log Kow value of above 6.0. Similarly, PAHs with log Kow values higher than 5.5 could have not been collected by PDMS samplers. In contrast, BR-based passive samplers have sampled also high molecular weight PAHs in the water column, and SN10 sampler showed the highest performance in terms of the collected PAHs. Results highlighted that SN10 sampler has a wide absorption range when it is compared with the commercialized samplers, and it has also advanced absorption performance relative to the other BR samplers.

scholarly journals Sustained deposition of contaminants from the Deepwater Horizon spill

2016 ◽  
Vol 113 (24) ◽  
pp. E3332-E3340 ◽  
Author(s):  
Beizhan Yan ◽  
Uta Passow ◽  
Jeffrey P. Chanton ◽  
Eva-Maria Nöthig ◽  
Vernon Asper ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbon ◽  
Water Column ◽  
Deepwater Horizon ◽  
Diatom Bloom ◽  
Drilling Mud ◽  
Deep Sediment ◽  
Pelagic Food Webs ◽  
Polycyclic Aromatic ◽  
Large Diatom ◽  
Benthic Ecosystems

The 2010 Deepwater Horizon oil spill resulted in 1.6–2.6 × 1010 grams of petrocarbon accumulation on the seafloor. Data from a deep sediment trap, deployed 7.4 km SW of the well between August 2010 and October 2011, disclose that the sinking of spill-associated substances, mediated by marine particles, especially phytoplankton, continued at least 5 mo following the capping of the well. In August/September 2010, an exceptionally large diatom bloom sedimentation event coincided with elevated sinking rates of oil-derived hydrocarbons, black carbon, and two key components of drilling mud, barium and olefins. Barium remained in the water column for months and even entered pelagic food webs. Both saturated and polycyclic aromatic hydrocarbon source indicators corroborate a predominant contribution of crude oil to the sinking hydrocarbons. Cosedimentation with diatoms accumulated contaminants that were dispersed in the water column and transported them downward, where they were concentrated into the upper centimeters of the seafloor, potentially leading to sustained impact on benthic ecosystems.

Partitioning of unsubstituted Polycyclic Aromatic Hydrocarbons between surface sediments and the water column in the Brisbane River Estuary

1990 ◽  
Vol 41 (4) ◽  
pp. 443 ◽  
Author(s):  
SI Kayal ◽  
DW Connell
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Water Column ◽  
Aromatic Hydrocarbons ◽  
Partition Coefficients ◽  
Laboratory Experiments ◽  
River Estuary ◽  
Chemical Properties ◽  
Linear Relationships ◽  
Physico Chemical ◽  
Polycyclic Aromatic

In all, 23 sediment samples and 8 water column samples from the Brisbane River estuary, Queensland, Australia, were analysed for polycyclic aromatic hydrocarbons (PAHs) in order to assess the field partitioning behaviour of these hydrocarbons. Twelve PAHs, ranging in molecular weight from naphthalene to benzo[a]pyrene, were identified and quantified. Their partition coefficients, indexed to sediment organic carbon and lipid content, were calculated after filtering to remove particulates and making a calculated adjustment for colloids, or organic matter, in the water phase. In logarithmic form, the partition coefficients were related to the physico-chemical properties of the compounds (Kow, Sw, RRT) by relationships having a parabolic shape rather than being linear. However, compounds with log Kow values of less than 5.5 gave linear relationships comparable to, but distinctly different from, those obtained from laboratory experiments. It is suggested that field conditions have distinctive differences from laboratory experiments that do not allow the direct translation of laboratory-based relationships to the natural aquatic environment.

Can drones be used to conduct water sampling in aquatic environments? A review

2019 ◽  
Vol 670 ◽  
pp. 569-575 ◽  
Author(s):  
H.T. Lally ◽  
I. O'Connor ◽  
O.P. Jensen ◽  
C.T. Graham
Keyword(s):  
Aquatic Environments ◽  
Water Sampling
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