Available online
Description
This summer school video looks at some of the research methods adopted to monitor likely ozone concentrations for the future. Dr. Barbara Finlayson-Pitts is conducting a discharge flow experiment t...o determine a rate constant for a reaction between a chlorine atom and ozone molecules. Dr. Stanley Tyler demonstrates the use of gas chromotography to analyse samples collected at various latitudes. james anderson monitors data using instruments parachuted from a balloon. Finally Dr. John Pyle is working on computer predictions based on all the significant reactions thought to occur. But the ozone layer has its own naturally destructive cycle - so how significant is the additional destruction caused by those chlorofluorocarbons which we are releasing. In addition, estimates of what will happen to the ozone layer have varied drastically from the outset of research into the subject and continue to do so. Finally, more than half the chloroflurocarbons produced aren't used in aerosols at all - other uses include refridgeration, air conditioning, foam manufacture - so, legislation against its production becomes more complex.
This summer school video looks at some of the research methods adopted to monitor likely ozone concentrations for the future. Dr. Barbara Finlayson-Pitts is conducting a discharge flow experiment t...o determine a rate constant for a reaction between a chlorine atom and ozone molecules. Dr. Stanley Tyler demonstrates the use of gas chromotography to analyse samples collected at various latitudes. james anderson monitors data using instruments parachuted from a balloon. Finally Dr. John Pyle is working on computer predictions based on all the significant reactions thought to occur. But the ozone layer has its own naturally destructive cycle - so how significant is the additional destruction caused by those chlorofluorocarbons which we are releasing. In addition, estimates of what will happen to the ozone layer have varied drastically from the outset of research into the subject and continue to do so. Finally, more than half the chloroflurocarbons produced aren't used in aerosols at all - other uses include refridgeration, air conditioning, foam manufacture - so, legislation against its production becomes more complex.
| Module code and title: | S341, "Photochemistry: light, chemical change and life" |
|---|---|
| Item code: | S341; 12 |
| First transmission date: | 1982 |
| Published: | 1982 |
| Rights Statement: | |
| Restrictions on use: | |
| Duration: | 00:29:22 |
| + Show more... | |
| Producer: | P. L Firstbrook |
| Contributors: | James Lovelock; David Phillips; David Roberts |
| Publisher: | BBC Open University |
| Keyword(s): | Aerosols; CFCs; Chlorofluorocarbons |
| Production number: | FOUS217D |
| Videofinder number: | 4444 |
| Available to public: | no |
