Question 44 2, 3, 7, 8-TCDD (\"dioxin\") was formed historically as an unwanted

Question

Question 44

2, 3, 7, 8-TCDD ("dioxin") was formed historically as an unwanted during production of What is the current primary source of 2, 3, 7, 8-TCDD to the environment? tons a few kilograms or a few grams? The number of chlorinated PCB congeners is 209. The number of brominated PBDEs is 209. Why the same number? Be specific. Consider propane. How many different dichloro propane isomers are there? Draw them Which of the two types, co-planar and non-co-planar PCBs, is generally more toxic in the ways that dioxins are toxic. Why?

Explanation / Answer

Ans 44 .A few grams

2,3,7,8, PDCC is produced in the production of PVC . The average production of PDCC accounts for approximately 27g per year .

It may seem very less , but the permissible daily intake is as less as 7 x 10-10 g per day for a normal person . So this is equal to 38.5 billion tolerable daily intakes.

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