ENV100Y5 Lecture Notes - Lecture 45: Polybrominated Diphenyl Ethers, Multiple Chemical Sensitivity, Scrubber
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ENV100Y5 Full Course Notes
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Toxicology continued: technology plays several roles in toxicology. Advanced techniques for detection at very low concentrations (ppt) To determine transport, fate, persistence, toxicity, and bioaccumulative tendencies. Scrubber technology to put in smokestack and removes the scrub before it goes into the environment. New processes, alternative methods: toxicity test for water quality. Indicator species used to see if present or not which shows a sign about the ecosystems. Bacteria tests, sediment tests using worms and other organisms: toxins difficult to identify. Nuclear poking at the nucleus of the atom. Dna analysis of samples detecting species. Depends on what you"re looking for, what form it"s in, what it is contained in (the matrix), the sample size, concentration, etc. Contain many molecular species and interferents other stuff interferes. You have to know what you"re looking for have to look for certain thing impossible to find everything. 1 ppm: 1 part in a million parts (e. g. , 1 g per 106 g)
