Response to comment on 'Accumulation of Organochlorine Pesticides and PCBs by Semipermeable Membrane Devices and Mytilus edulis in New Bedford Harbor'
Article Abstract:
The modifications effected by researchers Hofelt and Shea on the standard semi-permeable membrane design (SPMD) was meant to measure the diffusion of organochlorine pesticides and PCBs through a membrane using an equilibrium model, not as a linear model. The modifications were effected to better mimic the accumulation mechanism in mussels than those offered by the SPMD design. This does not require the calculation of sorption kinetics, especially those corrected for membrane thickness and media kinetics.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
Determination of waterborne bioavailable organochlorine pesticide residues in the lower Missouri River
Article Abstract:
A study has been conducted to determine the presence of organochlorine (OC) pesticides in the main stem of the Missouri River using a semipermeable membrane device. OCs were detected in all five main stem sites, with chlordane components, heptachlor epoxide, taxaphene and dieldrin at high concentrations. There was a high accumulation of dieldrin in Glasgow, MO, at 800 ng/sample and of heptachlor epoxide in Hermann, MO, at 180 ng/sample. Replicate SPMD also showed similar quantities of the OCs.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
Comment on 'Accumulation of Organochlorine Pesticides and PCB by Semipermeable Membrane Devices and Mytilus edulis in New Bedford Harbor'
Article Abstract:
The changes effected by researchers Hofelt and Shea on the standard semi-permeable devices (SPMD) design to achieve a 100L/d sampling rate errs on two counts. The changes in the standard SPMD design increased the SPMD area by twice its original area and membrane thickness by three times its original thickness. The changes also failed to account for the effects of the switching of rate control due to membrane-thickness parameter.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Accumulation of organochlorine pesticides and PCBs by semipermeable membrane devices and Mytilus edulis in New Bedford Harbor
- Abstracts: Occurrence and behavior of pesticides in rainwater, roof runoff, and artificial stormwater infiltration. Aqueous speciation and 1-octanol-water partitioning of tributyl- and triphenyltin: effect of pH and ion composition
- Abstracts: Multiresidue method for determination of post-emergence herbicides in water by HPLC/ESI/MS in positive lonization mode
- Abstracts: Reducing methyl bromide emission with a high barrier plastic film and reduced dosage. Design, fabrication, and application of a dynamic chamber for measuring gas emissions from soil
- Abstracts: Measurements of the hydroxyl radical in a manipulated but realistic indoor environment. part 2 Determination of ozone removal rates by selected building products using the FLEC emission cell