Children's exposure to arsenic and chromium from playground equipment constructed with chromated copper arsenate
(CCA)--treated wood is a potential concern because of children's hand-to-mouth activity.
Chromium fixation rates and leaching characteristics of acid copper chromate (ACC) were compared with those of four preservatives that contain chromium/copper: chromated copper arsenate
types A, B, and C (CCA-A, CCA-B, CCA-C) and chromated copper borate (CCB), in red pine (Pinus resinosa Ait) sapwood.
One species, Sulfurospirillum barnesii, can metabolize no fewer than nine types of atoms or ions other than arsenates
, including sulfur, nitrates, nitrites, and selenates.
The International Agency for Research on Cancer recognizes arsenic and arsenic compounds as Group 1 Carcinogens, and the EU lists arsenic trioxide, arsenic pentoxide and arsenate
salts as Category 1 Carcinogens.