Your search resulted in 34 documents. Displaying 25 entries per page.
Bioaccumulation of pentachlorophenol in rainbow trout and zebra fish muscles
1986 - IRG/WP 3372
The bioaccumulation of pentachlorophenol in Rainbow Trout and Zebra fish has been evaluated by partition coefficient n-octanol/water determination at ph 7 and measured in vivo according to the OECD guidelines and the European directive 79/831/EEC. The obtained results confirm the low bioaccumulation potential of this product in aquatic organims....
J C Palla, M Dion
Système informatisé d'aide à la décision pour la gestion de la migration du pentachlorophénol dans l'environnement
1993 - IRG/WP 93-50001-10
This paper describes a Decision Support System (DSS), concerning pentachlorophenol (PCP) migration in the environment. The principal objectives of the DSS are to assist managers in siting of PCP-treated poles in the Hydro-Québec system and the storage areas and in the treatment of customer complaints. Four mathematical models are incuded in the system: a model simulating migration inside and on t...
G Lefebvre, J-C Tessier
Comparative performance of pentachlorophenol and copper naphthenate in a long term field stake test
2000 - IRG/WP 00-30243
In this study the performance of copper naphthenate (Cu-Nap) and pentachlorophenol (Penta) treated pine stakes against decay and termite attack were compared at two test sites in Mississippi. Four different petroleum oils meeting AWPA Standard P9-A were used as carriers for these wood preservatives. After ten years exposure, the efficacy of Cu-Nap at a retention level of 0.05 pcf Cu was equivalent...
D D Nicholas, M H Freeman
Chlorodioxins in pentachlorophenol
1975 - IRG/WP 346 E
At the 6th meeting of the IRG/WP plenary group held on 20 June, 1974, in Vienna, Mr Richardson expressed some concern about dioxins which might be contained as impurities in pentachlorophenol and in sodium pentachlorophenoxide or which might be formed during the combustion of treated wood. He mentioned the malformations that have been noted in Vietnam due to the teratogenic action of the 2, 3, 7, ...
H Alliot
Chlorodioxines dans le pentachlorophénol
1975 - IRG/WP 346
H Alliot
Migration of Metals from Douglas-fir Lumber Treated with ACZA or Pentachlorophenol Using Best Management Practices: Preliminary Tests
2005 - IRG/WP 05-50224-4
The potential for migration of preservative components from ammoniacal copper zinc arsenate (ACZA) and pentachlorophenol treated Douglas-fir lumber in non-soil contact exposure was assessed in a simulated rainfall device. Metal levels from ACZA treated wood were elevated for the first 30 minutes of rainfall and then declined sharply. Repeated cycles of rainfall led to declines in initial metal l...
J J Morrell, Hua Chen, J Simonsen
Remediation of pentachlorophenol- and creosote-contaminated soils using wood-degrading fungi
1994 - IRG/WP 94-50021
Microbiological treatment of hazardous wastes has generally been associated with the use of bacteria. During the past decade a significant body of evidence has accumulated that demonstrates that fungi, in particular white-rot fungi, have the ability to degrade a wide range of hazardous organic compounds (xenobiotics) and thus might also be useful for treatment of materials contaminated with these ...
R T Lamar, T K Kirk
Wood Preservatives Science Issues: US EPA’s Perspective
2005 - IRG/WP 05-50224-2
The USEPA Office of Pesticide Programs (OPP), Antimicrobials Division (AD), regulates the use of chemicals registered as wood preservatives in the United States. An overview of the registration and re-registration process is presented. The wood preservatives data requirements include toxicological, human exposure, ecological, and environmental fate data. A detailed discussion of wood preservati...
N Elkassabany
Zur Analytik von Pentachlorphenol und Tetrachlorphenol in der Luft und im Urin. [On the analytics of pentachlorophenol and tetrachlorophenolin the air and in urine]
1979 - IRG/WP 3139
Because of its excellent fungicide and insecticide properties PCP has been used for more than three decades in the field of wood preservation. Recently, however, its application has been criticized repeatedly. The motives for criticism were diseases, the origin of which was supposed to be closely connected with the use of pentachlorphenolic wood preservatives. The quantitative evidence of this sub...
A Dahms, W Metzner
Pentachlorophenol: The non-emotional approach. Second draft: A discussion document
1995 - IRG/WP 95-50040-07
Regulations on PENTA start from a strange story. Often initiated as pure ban in certain countries to provide satisfaction to pressure groups, the increased knowledge of the toxicology has contributed to one of the best documented file concerning a substance widely used as wood preservative. The accumulated documentation on its contaminants and its potentialities as dioxin and furan precursor in ce...
G Ozanne
Pentachlorophenol, its salts and esters; UK review of its uses in wood preservation and surface biocides
1995 - IRG/WP 95-50040-27
The review on pentachlorophenol was undertaken by the Health and Safety Executive on behalf of the independent Advisory Committee on Pesticides in response to the 9th Amendment to the Marketing and Use Directive. The high toxicity to man and the environment was noted and the associated risks were assessed. The Cornmittee concluded that the potential carcinogenicity was probably via a non-genotoxic...
M Fitzpatrick, C Mackie
Pentachlorophenol and tributyltin oxide - the performance of treated Pinus radiata after 12 years' exposure
1986 - IRG/WP 3361
Pinus radiata samples were impregnated with a range of light organic solvent preservatives and copper/chrome/arsenic salt and exposed with no surface coating both in and above ground for 12 years. Inspection of the test samples revealed that some formulations of light organic solvent preservatives will give good fungal protection and reduce splitting in Pinus radiata exposed externally without a s...
R S Johnstone
Dura-Treet II, a water dispersible pentachlorophenol
1980 - IRG/WP 3165
During the past several decades, penta petroleum wood treating has become increasingly popular. Penta is an effective chemical compound against wood organisms causing decay and rot, is safe to handle, also clean and easy to use. In terms of preservative cost, it has been and remains by far the least expensive of the three major preservatives. However, when the cost of petroleum carrier is added, t...
D B Hatcher
Effect of Oil Content on The Performance of Wood Treated with Pentachlorophenol
2003 - IRG/WP 03-30324
This paper details a five-year study on southern pine treated with pentachlorophenol in oil at various oil contents. Results from field stake tests at two Gulf Coast test sites are presented. Both biological efficacy and preservative depletion data are discussed. Results suggest that increasing oil content leads to better performance of wood treated with pentachlorophenol. Test results indicat...
H M Barnes, T L Amburgey, M G Sanders
After 18 years, preservative dipping and brush treating continue to provide protection to shingles of western wood species
1997 - IRG/WP 97-30156
The presence of residual preservation in dip-treated and brush-treated shingles of various species from the western United States was assessed 18 years after installation using Aspergillus bioassays. The performance of western redcedar (Thuja plicata) was compared to western hemlock (Tsuga heterophylla), sugar pine (Pinus lambertiana) and western larch (Larix occidentalis). Untreated shingles of a...
T C Scheffer, D J Miller, J J Morrell
Pentachlorophenol - The US and Canadian experience
1995 - IRG/WP 95-50040-26
Pentachlorophenol ("Penta") is a highly effective and economical wood preservative. The principal use in the United-States and Canada is pressure-treatment of wood; major applications are for railroad ties, pilings, posts, cross arms, and poles. Treatment of wood products with pentachlorophenol typically extends the functional life of wood by at least eight times. Because of the presence of certai...
J Wilkinson
Wood preservation in Canada - Regulation and Registration
2001 - IRG/WP 01-50166-02
The Canadian wood preservation industry is at a critical juncture now as a number of initiatives converge on the industry over the next few years. Issues facing the industry include: Re-evaluation of the conventional wood preservative chemicals - inorganic arsenicals, creosote and pentachlorophenol targeted for July 2001. Delayed registration of new actives as a result of re-evaluation activity an...
P A Cooper
Effect of soil chemistry and physical properties on wood preservative leaching
1998 - IRG/WP 98-50111
When treated wood is placed in contact with soil, complicated mass transfer and chemical reactions occur which causes the preservative components to leach from the wood. There are several factors that are known to affect the amount of chemical leached from wood. These are properties of the preservative and carrier, preservative retention, degree of fixation, exposure time, grain orientation, surfa...
Joan-Hao Wang, D D Nicholas, L S Sites, D E Pettry
Programme d'études sur le pentachlorophénol
1993 - IRG/WP 93-50001-09
In 1989, Hydro-Québec began a study program on pentachlorophenol (PCP), with a view to ensuring safe management of the product at all stages of its utilization. The topics under study include storage of treated poles, behavior of PCP in the environment, soil decontamination, water treatment, characterization and disposal of treated wood waste, and assessment of substitutes. This paper summarizes ...
G Beaulieu, A Bériault, R Chénier, L Houde
Assaying Pentachlorophenol-treated Wood Using XRF
2007 - IRG/WP 07-20362
A study was conducted to evaluate the effect of oil type on the performance of test posts treated with oil-penta and exposed in DeQueen, AR for forty years in ground contact. The original assays for the poles were done by lime ignition, a practice used sparingly today in treating plants or by independent inspectors, in part due to the complicated analysis procedure and chances for error. XRF ins...
H M Barnes, C R McIntyre, D W Bullock , M H Freeman, G B Lindsey
The influence of pentachlorophenol on mycelial growth of wood decay fungi Trametes versicolor, Grifola frondosa, Hypoxylon fragiforme, and Coniophora puteana
2007 - IRG/WP 07-30437
Polychlorinated phenols have been one of the most commonly used biocides. In recent time they have been increasingly eliminated from the marked. Because of their high stability, they are still present in numerous products, including impregnated wood. In our research we studied in vitro the influences of pentachlorophenol and/or sodium pentachlorophenolate on mycelial growth of four wood degrading ...
F Pohleven, B Boh
Effect of barriers on moisture content of treated and non-treated utility poles
2007 - IRG/WP 07-40369
The potential for non-biocidal barriers to slow moisture sorption was investigated using butt treated western redcedar poles immersed in either water or moist soil over a 2 year period. Moisture sorption was initially slowed by the barriers, but openings at the bottoms of the barriers eventually allowed moisture to migrate upward. Moisture levels in wrapped poles eventually reached those found in...
C S Love, J J Morrell
Remediation of Pentachlorophenol (PCP) in Biodiesel versus Diesel Carriers
2011 - IRG/WP 11-50279
Biodiesel is believed to be more environmentally friendly than petroleum based diesel when used as a carrier for impregnation of PCP into wood products for protecting wood from decay. A six month study was conducted to evaluate the remediation of PCP in biodiesel versus diesel in soil. Different percentages of biodiesel, diesel and PCP were mixed with clean soil from a forested site and tested. Sa...
S Keshani Langroodi, H Borazjani, D Nicholas, L Prewitt, S V Diehl, S Kitchens
Life Cycle Assessment Comparison of Treated Wood to Alternate Materials – Overview, Results and Lessons
2011 - IRG/WP 11-50282
Life Cycle Assessment (LCA) has proven useful in documenting the “green” benefits of various treated products compared to the commonly used alternates. To date, six LCA comparisons have been done or are nearing completion using ISO14040 and 14044 principles and data from US EPA databases. In almost all cases, the impact indicators for treated wood products show considerably smaller adverse e...
T Stephen, P E Smith, C R McIntyre
Effect of Biodiesel on the Efficacy of Pentachlorophenol Treated Wood
2012 - IRG/WP 12-30584
Pentachlorophenol (PCP) is widely used as a wood preservative for utility poles and other wood products. Recently, it has been proposed that a modified PCP carrier system based on a diesel/biodiesel mixture should be used in place of the conventional diesel/KB3 carrier, but there is some question as to whether or not this modified carrier system can provide the same service life for wood products ...
S Keshani Langroodi, H Borazjani, D Nicholas, L Prewitt, S V Diehl