A comparison of mussels (Perna viridis) and semi-permeable membrane devices (SPMDs) for monitoring chlorinated trace organic contaminants in Hong Kong coastal waters.

Department of Biology and Chemistry, Research Centre for Coastal Pollution and Conservation, City University of Hong Kong, Kowloon.
Chemosphere (Impact Factor: 3.5). 01/2002; 45(8):1201-8. DOI: 10.1016/S0045-6535(00)00535-X
Source: PubMed

ABSTRACT A comparison of mussels (Perna viridis) and semi-permeable membrane devices (SPMDs) was carried out at five sites, representing a gradient of contaminant concentrations, in Hong Kong coastal waters. Mussels, originally collected from a "clean" location, were deployed along with SPMDs at each site for 30 days. Analyses for chlorinated pesticides and polychlorinated biphenyls (PCBs) indicated that SPMDs have potential as monitoring tools, and to some extent can overcome the problems associated with mussels, such as natural variability, differing age, sex, and physical condition. However, in most cases, SPMDs failed to rank the sites in the same order as mussels in terms of contaminant concentrations. Nonetheless, in localities where mussels cannot survive--as shown at Kwun Tong in the present experiment--SPMDs may be valuable in providing an indication of potentially bio-available lipophilic pollutants.

  • [Show abstract] [Hide abstract]
    ABSTRACT: Bioavailability of dichlorodiphenyltrichloroethanes (DDTs) in surface sediments was evaluated with semipermeable membrane devices (SPMDs) and two different sediment-dwelling benthic mussels, Bellamya aeruginosa (B. aeruginosa) and Corbicula fluminea (C. fluminea). After 28d laboratory exposure, the positive correlations of DDT concentrations between both SPMDs and benthic mussels with sediments documented that the bioavailability of DDTs was mainly affected by surrounding sediments, while the observed differences of DDT concentrations and congener proportions between B. aeruginosa and C. fluminea were due to the specific physiological characteristics of organisms and different physico-chemical properties of contaminants. Comparisons between SPMDs and benthic mussels showed higher values of biota-sediment accumulation factors (BSAF, 0.63-3.61 for B. aeruginosa and 2.19-17.08 for C. fluminea) than device accumulation factors (DAF, 1.00-1.74). This indicated that living organisms bioaccumulated much more DDTs from sediments than SPMDs due to the different exposure and uptake routes. Strong positive associations between DDTs in SPMDs and benthic mussels indicated SPMDs could mimic the bioaccumulation of DDTs, especially in C. fluminea. However, given the distinct differences observed for both concentrations and congener proportions of DDTs in SPMDs and B. aeruginosa, future study should be directed to develop reliable models with various sediment-dwelling organisms before SPMDs are routinely used in field study.
    Soil and Sediment Contamination 04/2013; 22(3). DOI:10.1080/15320383.2013.726297 · 0.58 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: For evaluating the brown mussel Perna perna as a sentinel organism regarding environmental concentrations of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs), the present study reports original data on the relationship between the concentrations of these chemicals in bottom surface sediments, suspended solids (SS) and concentrations bioaccumulated by this bivalve. Three P. perna cultivation areas, located at three bays in southeastern Brazil were used in this study. The three estuaries are under different degrees of environmental impact. Variations in the OCP and PCB concentrations bioaccumulated by the bivalves tended to be similar to those observed in the sediment, but differed from those found in SS. This latter difference might suggest that the SS trapping apparatuses should have been left in place for approximately 60days (not only 15days). This longer period would allow the integration of the environmental variability of the OCP and PCB burden adsorbed to this compartment. Authors encourage future studies to evaluate P. perna exposure to OCPs and PCBs through the evaluation of sediment concentrations.
    Chemosphere 11/2014; 114:9–15. DOI:10.1016/j.chemosphere.2014.04.008 · 3.50 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: This paper details how activity-based passive sampling methods (PSMs), which provide information on bioavailability in terms of freely dissolved contaminant concentrations (Cfree ), can be used to better inform risk management decision-making at multiple points in the process of assessing and managing contaminated sediment sites. Because Cfree is a better predictor of bioavailability than total bulk sediment concentration (Ctotal ) for four key endpoints included in conceptual site models (benthic organism toxicity, bioaccumulation, sediment flux, and water column exposures), PSMs can increase certainty in site investigation and management. Because of their small size, the use of PSDs presents particular challenges with respect to representative sampling for estimating average concentrations and other metrics relevant for exposure and risk assessment. These challenges can be addressed by designing studies that account for sources of variation associated with the PSDs and spatial scales. Possible applications of PSMs include: quantifying spatial and temporal trends in bioavailable contaminants; identifying and evaluating contaminant source contributions; calibrating site-specific models; and, improving weight-of-evidence based decision frameworks. PSM data can be used to: assist in delineating sediment management zones based on likelihood of exposure effects; monitor remedy effectiveness; and, evaluate risk reduction after sediment treatment, disposal, or beneficial reuse following management actions. Examples are provided illustrating why PSMs and Cfree should be incorporated into contaminated sediment investigations and study designs to better understand and focus on contaminant bioavailability, more accurately estimate exposure to sediment-associated contaminants, and better inform risk management decisions. Research and communication needs for encouraging broader use are discussed. Integr Environ Assess Manag © 2013 SETAC.
    Integrated Environmental Assessment and Management 04/2014; 10(2). DOI:10.1002/ieam.1511

Full-text (2 Sources)

Available from
Feb 18, 2015