Tannin-based wood preservatives
were studied for a long time (Laks et al.
Standard method of testing wood preservatives
by laboratory soil-block cultures.
The research report, "Wood Preservative
Chemicals: A U.S.
The EPA first acknowledged the dangers of wood preservatives
in 1978 and announced plans to phase-out the pesticides' registration, but anti-pesticide lobbyist groups say the agency has done nothing but back-pedal ever since.
Several relatively nontoxic wood preservatives
are already available, and they repel rot and bugs about as well as CCA does, notes Jim Jones, director of EPA'S Office of Pesticide Programs in Arlington, Va.
In California, a bill has been introduced that would prohibit the manufacture and distribution of wood treated with an arsenical wood preservative
. The bill also would require treated playground or recreational equipment, including wood chips, to be sealed or removed.
In the late 1980s, Marvin used a wood preservative
produced by Pittsburgh Paint and Glass (PPG) on wood frames for its windows and doors.
When Ma and colleagues screened plants growing on soil heavily contaminated by wood preservative
, they found the brake fern (Pteris vittata) comprised arsenic concentrations of 4,000 parts per million, while other plants held only a fraction of that amount.
* Only five percent of respondents consider wood preservative
treated wood poles taken out of service as hazardous waste and dispose of them accordingly.
Posts are three 12-foot-long 4-by-4s spaced 3 1/2 feet apart on center and sunk 3 1/2 feet in the soil (bases were pretreated with wood preservative
chemicals market is growing with a significant growth rate due to the increased use of wood in the households and industrial sector.