Spatial and temporal variance of hydrocarbon pollution data in a coastal river-influenced sedimentary system

Grimalt, Joan O.; Cantón, L.; Alonso, Begona

doi:10.1021/es00035a025

Cited by 19 publications

(3 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The geometric mean of TPCB in the harbor basin, 23.6 ng/g, was higher by roughly 10 times that of T‐19, which was only about 3 km away in open sea, indicating that the harbor basin was contaminated with elevated levels of PCBs. The TPCB levels in the present work were on the high side of the contamination levels previously reported for harbors, coastal bays, and estuaries [7–11,25–28]. Although coplanar PCBs levels were not determined, the highest contamination levels exceeded the effect ranges (ER‐L and ER‐M) that are believed to evoke toxic responses in marine benthic organisms [7].…”

Section: Resultsmentioning

confidence: 50%

“…Their environmental problems originate from their wide‐spread occurrence, long persistence, high bioaccumulation, and toxicity [4–6]. Their levels in aquatic environments have been particularly well documented [7–11]. Once introduced into an aquatic system, regardless of input paths, PCBs sorb onto suspended particles and the bottom sediment due to their characteristically high hydrophobicity [12].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of extreme tidal range on characteristics of polychlorinated biphenyl distribution in sediment of industrial Incheon North Harbor, Korea

Kim

Lee

et al. 2000

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

Abstract-This study investigated the influence of the high tidal range on the polychlorinated biphenyl (PCB) levels and the compositional characteristics in the sediments of the North Incheon Harbor basin, Korea. The results indicated that the high tidal range could induce complicated effects on the distribution and the compositional characteristics of PCBs. Significant differences in the total PCB concentration were found between the tidal and subtidal zones. Higher total PCBs in the tidal zone established a total PCB gradient in a transversal direction along the harbor basin. The large tidal range created tidal currents strong enough to grade the sediment particles, establishing a gradient of total PCBs corresponding to an observed sediment particle size along the longitudinal direction of the basin. Heterogeneous congener patterns were observed in some parts of the tidal zone where diverse physicochemical and microbiological conditions are to be expected. However, tidally driven, active sediment transport promoted spatial homogeneity in the congener pattern. Sedimentation rate of suspended solids appeared to overwhelm any induced heterogeneity in the PCB congener pattern. Consequently, the congener pattern within the harbor basin was fairly uniform and similar to that of a dominant input source.

show abstract

Section: Resultsmentioning

confidence: 50%

Section: Introductionmentioning

confidence: 99%

Effects of extreme tidal range on characteristics of polychlorinated biphenyl distribution in sediment of industrial Incheon North Harbor, Korea

Kim

Lee

et al. 2000

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

show abstract

“…It is possible, using a number of techniques, to estimate summary statistics (16). However, when individual concentrations need to be taken into account the most favored solution is not to consider compounds exhibiting a large proportion of "less than" values (17). Because of such considerations, only three organochlorine compounds were included in the data set used for statistical analysis: dieldrin, ∑DDT (the sum of op and pp isomers of DDD, DDE, and DDT), and PCB (as Aroclor 1248).…”

Section: Methodsmentioning

confidence: 99%

Multivariate Analysis of U.K. Salt Marsh Sediment Contaminant Data with Reference to the Significance of PCB Contamination

Scrimshaw

Lester

2001

Environ. Sci. Technol.

View full text Add to dashboard Cite

A data set acquired to establish an inventory of pollutants in salt marsh sediments has been evaluated using two numerical techniques, principal component analysis and discriminant analysis. Results indicate that sites proximate to the River Thames exhibit a greater degree of contamination, and numerical analysis supports the hypothesis that the river has been the major source of contaminants to the region. The presence of the contaminants within salt marsh sediments may be of concern due to changes in flood defense techniques. The use of managed realignment, where the line of flood defense is moved back to higher ground which requires only a low, minimal cost, sea-wall protected by newly created salt marsh from former farmland, is not free from problems of historical pollution. Mature salt marsh, laid down during previous decades, may be eroded and reworked within the new coastal geomorphology created by breaching existing seawalls and what were previously considered to be sinks of pollutants may have become sources. However, evaluation of the sediment burden of PCB within the salt marshes of the U.K. Essex coast indicates that they are not likely to be a major source of pollutants should sediments be remobilized during managed realignment programs.

show abstract

Monitoring, sampling, and automated analysis

Goo¹

1993

Water Environment Research

View full text Add to dashboard Cite

Spatial and temporal variance of hydrocarbon pollution data in a coastal river-influenced sedimentary system

Cited by 19 publications

References 59 publications

Effects of extreme tidal range on characteristics of polychlorinated biphenyl distribution in sediment of industrial Incheon North Harbor, Korea

Effects of extreme tidal range on characteristics of polychlorinated biphenyl distribution in sediment of industrial Incheon North Harbor, Korea

Multivariate Analysis of U.K. Salt Marsh Sediment Contaminant Data with Reference to the Significance of PCB Contamination

Monitoring, sampling, and automated analysis

Contact Info

Product

Resources

About