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Facilities must report quantities of listed chemicals released to the air through stacks or fugitive emissions; quantities directly discharged to water on-site or to a publicly owned treatment works; released or disposed of to land, such as in a landfill or injection well; and quantities of waste transferred off-site for disposal or release ...
U.S. Army Public Health Center Toxicology Lab technician assessing samples. Toxicology testing, also known as safety assessment, or toxicity testing, is the process of determining the degree to which a substance of interest negatively impacts the normal biological functions of an organism, given a certain exposure duration, route of exposure, and substance concentration.
Toxicity characteristic leaching procedure (TCLP) is a soil sample extraction method for chemical analysis employed as an analytical method to simulate leaching through a landfill. The testing methodology is used to determine if a waste is characteristically hazardous, i.e., classified as one of the "D" listed wastes by the U.S. Environmental ...
Toxic units (TU) are used in the field of toxicology to quantify the interactions of toxicants in binary mixtures of chemicals. [1] A toxic unit for a given compound is based on the concentration at which there is a 50% effect (ex. EC50) for a certain biological endpoint.
Negative values of the decimal logarithm of the median lethal dose LD 50 (−log 10 (LD 50)) on a linearized toxicity scale encompassing 11 orders of magnitude. Water occupies the lowest toxicity position (1) while the toxicity scale is dominated by the botulinum toxin (12). [107] The LD 50 values have a very wide range.
The word toxicology (/ ˌ t ɒ k s ɪ ˈ k ɒ l ə dʒ i /) is a neoclassical compound from Neo-Latin, first attested c. 1799, [3] from the combining forms toxico-+ -logy, which in turn come from the Ancient Greek words τοξικός toxikos, "poisonous", and λόγος logos, "subject matter").
The final toxicology report states the fentanyl detected in Heche's urine was administered in the hospital. The medical examiner determined Heche died of inhalation and thermal injuries. She was ...
Toxicity is the degree to which a chemical substance or a particular mixture of substances can damage an organism. [1] Toxicity can refer to the effect on a whole organism, such as an animal, bacterium, or plant, as well as the effect on a substructure of the organism, such as a cell (cytotoxicity) or an organ such as the liver (hepatotoxicity).