Evidence map›Paper›PMID 31444645›Full record

ArticleEnvironmental monitoring and assessment2019

Characterization and spatial distribution of organic-contaminated sediment derived from historical industrial effluents.

Emma Hoffman, Masi Alimohammadi, James Lyons, Emily Davis, Tony R Walker, Craig B Lake

Abstract read
PubMed Publisher
In one paragraph

Article in Environmental monitoring and assessment, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
3.2field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed, 44 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Emma HoffmanSchool for Resource and Environmental Studies, Dalhousie University, Halifax, NS, Canada.
Masi AlimohammadiDepartment of Civil and Resource Engineering, Dalhousie University, Halifax, NS, Canada.
James LyonsDepartment of Civil and Resource Engineering, Dalhousie University, Halifax, NS, Canada.
Emily DavisSchool for Resource and Environmental Studies, Dalhousie University, Halifax, NS, Canada.
Tony R WalkerSchool for Resource and Environmental Studies, Dalhousie University, Halifax, NS, Canada. trwalker@dal.ca.ORCID http://orcid.org/0000-0001-9008-0697
Craig B LakeDepartment of Civil and Resource Engineering, Dalhousie University, Halifax, NS, Canada.
Dalhousie University · CA

Funding

Natural Sciences and Engineering Research Council of Canada RG¬PIN-2018-04119
6 · The paper itself

Abstract

Organic sediment contaminants [polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans (PCDD/Fs), and polycyclic aromatic hydrocarbons (PAHs)] were assessed using secondary monitoring data from a former tidal estuary (Boat Harbour) impacted by historical industrial effluents. Spatiotemporal characterization of PCDD/Fs and PAHs in sediments was conducted to inform a sediment remediation program designed to return this contaminated aquatic site back to a tidal lagoon. Spatiotemporal variations of sediment PCDD/F and PAH concentrations across Boat Harbour and off-site reference locations were assessed using secondary monitoring data collected between 1992 and 2015. Sediment PCDD/F toxic equivalency (TEQ) and PAH concentrations were compared to sediment quality guidelines. Sediment PCDD/F concentrations exceeded the highest effect thresholds posing severe ecological health risks. High sediment PCDD/F concentrations have persisted in Boat Harbour despite implementation of Pulp and Paper Mill Effluent Chlorinated Dioxins and Furans Regulations in 1992. PAH concentrations varied greatly. Five individual PAH compounds frequently exceeded severe effect thresholds, in contrast to total PAHs, which were below severe effect thresholds. Forensic analysis using PAH diagnostic ratios suggests pyrogenic PAHs derived from wood processes or coal combustion were likely sources. Twenty-five years of monitoring data revealed large data gaps in our understanding of sediment characteristics in Boat Harbour. Gaps included spatial (vertical and horizontal) and temporal variations, presenting challenges for remediation to accurately delineate sediment contaminants. Deeper horizons were poorly characterized compared to shallow sediments (0-15 cm). Historical secondary monitoring data showed that spatial coverage across Boat Harbour was inadequate. Due to severe ecological health risks associated with high sediment PCDD/F concentrations, remediation of the entire sediment inventory is recommended. Detailed vertical and horizontal sampling within Boat Harbour, establishment of local baseline concentrations, and additional sampling in down-gradient-receiving environments for a suite of contaminants are required to better characterize sediments prior to remediation.

Indexed as

BenzofuransDibenzofurans, PolychlorinatedEnvironmental MonitoringEnvironmental Restoration and RemediationGeologic SedimentsPolychlorinated DibenzodioxinsPolycyclic Aromatic HydrocarbonsBenzofuransDibenzofurans, PolychlorinatedPolychlorinated DibenzodioxinsPolycyclic Aromatic HydrocarbonsIndustrial effluentOrganic contaminantsPolychlorinated dibenzofurans [PCDD/Fs]Polychlorinated dibenzo-p-dioxinsPolycyclic aromatic hydrocarbons (PAHs)RemediationSediment monitoring

Identifiers

PMID31444645
OpenAlexW2969322496

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.