By T.P. Nelson

This booklet describes substitute formulations and packaging suggestions for the relief or removing of chlorofluorocarbon (CFC) use as an aerosol propellant. Use of CFCs in particular different types of aerosols thought of "nonessential" used to be banned by way of the U.S. in 1978. contemporary renewed curiosity in additional lowering all over the world creation and intake of CFCs, and different chemical compounds implicated within the depletion of the earth's stratospheric ozone layer, is liable for this learn, which covers at present exempted and excluded CFC aerosol functions and their choices.

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Additional resources for Alternative Formulations and Packaging to Reduce use of Chlorofluorocarbons

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H 04 NH3 - HC N205 • CIO 02 ' , - C ~ C7' C ,:!. 7. 0 10 - 0 10 100 1000 Relative retr ieva l error (%) . 0 10 " , '. •. C '"c: 0" 0 I- 10 0 ,, - , 10 100 SF6 COF2 CF4 OCS 1000 Relative re t rieva l error (%) Fig. 7. Random (dotted), sum of systematic (dashed) and total errors (solid) for single observations of selected MIPAS species (G. 1 New algorithms for data from satellite measurements 23 Improvement of aerosol retrieval algorithms Aerosol products were derived from two different types of instruments and algorithms.

1. 5 also illustrate the potential of tropospheric satellite measurements for use in environmental management. These include the observation of inter-continental plumes containing N0 2, S02 and aerosol from forest fires, volcanoes and highlying South African power plants; identification and quantification of sources of pollutant emissions on global and continental scales, the transport of sand from the Sahara over the neighbouring seas and lands, and the export of pollution from Europe into the northern hemisphere.

The study shows clearly that quantitative process studies in the tropopause region require a synergetic approach to use instrument data (satellite, aircraft) and atmospheric models (global, regional). 38 Paul S. Monks and Hennan GJ. -------------------~-----c~---, -00 AI DtJ! • R",,,·duols (TOMS GOME) 19 6 200 I ~ r--------,~------------------;r------~--~ Fig. 2. The latitude and time dependence of residuals between TOMS and TOVS (top), GOME and TOVS (middle) and TOMS and GOME (bottom).

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