Search results
Results from the WOW.Com Content Network
Due to hydrophobic properties, in aquatic ecosystems DDT and its metabolites are absorbed by aquatic organisms and adsorbed on suspended particles, leaving little DDT dissolved in the water (however, its half-life in aquatic environments is listed by the National Pesticide Information Center as 150 years [80]).
Methoxychlor is a synthetic organochloride ... Sprayed methoxychlor settles on the ground or in aquatic ecosystems, ... Maximum pesticide residue limits for the EU/UK ...
In a model ecosystem with a terrestrial-aquatic interface, sorghum seedlings were treated with mirex at 1.1 kg/ha. Caterpillars fed on these seedlings and their faeces contaminated the water which contained algae, snails, Daphnia, mosquito larvae, and fish. After 33 days, the ecological magnification value was 219 for fish and 1165 for snails.
Organochlorine chemistry is concerned with the properties of organochlorine compounds, or organochlorides, organic compounds that contain one or more carbon–chlorine bonds. [1] The chloroalkane class (alkanes with one or more hydrogens substituted by chlorine) includes common examples. The wide structural variety and divergent chemical ...
Aldrin is an organochlorine insecticide that was widely used until the 1990s, when it was banned in most countries. Aldrin is a member of the so-called "classic organochlorines" (COC) group of pesticides. COCs enjoyed a very sharp rise in popularity during and after World War II. Other noteworthy examples of COCs include dieldrin and DDT. [3]
Dicofol is a pesticide structurally similar to DDT and is highly toxic to fish, birds, aquatic invertebrates, and algae. Prolonged exposure in humans causes skin irritation. [29] Hexabromodiphenyl is a flame retardant and possible human carcinogen. Like the related chemicals hexaBDE, heptaBDE, and octaBDE (see below), hexabromodiphenyl is an ...
One of the intermediates used in its production is DDT. This has caused criticism by many environmentalists; however, the World Health Organization classifies dicofol as a Level II, "moderately hazardous" pesticide. [2] It is known to be harmful to aquatic animals, and can cause eggshell thinning in various species of birds. [3] [4] [5] [6]
Pentachlorophenol (PCP) is an organochlorine compound used as a pesticide and a disinfectant. First produced in the 1930s, it is marketed under many trade names. [5] It can be found as pure PCP, or as the sodium salt of PCP, the latter of which dissolves easily in water. It can be biodegraded by some bacteria, including Sphingobium ...