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Wet and Dry Deposition of Acid-Forming Atmospheric Trace Substances.

DE84770377

Publication Date	1982
Personal Author	Perseke, C.
Page Count	207
Abstract	Wet/dry measurements have shown that wet deposition plays a dominant part in scavenging sulphate, nitrate and chloride vis-a-vis dry deposition of aerosol particles. In contrast to regional distribution of SO sub 2 and NOsub(x) concentrations, regional distributions of sulphate and nitrate concentrations in the rain show but minor regional differences between polluted and clean-air regions. Increased trace substance concentrations in precipitation are observed with low-amount precipitation. Deposition of free acids is of some interests for an evaluation of the effect of ''acid'' precipitations on ecosystems. In areas of high SO sub 2 and NO sub 2 concentrations, potential acid deposition by dry-deposited SO sub 2 and NOsub(i) may contribute more to acid deposition than wet H exp + deposition. In urban and rural regions, an enrichment of nitrate was found in the rain as opposed to the aerosol on comparing the sulphate/nitrate ratio in rain and aerosol. (ERA citation 09:046570)
Keywords	Acid Rain Nitrates Sulfates Aerosols Deposition Environmental Effects Gases Sample Preparation Trace Amounts Washout Foreign technology ERDA/500200 ERDA/520200 ERDA/510200
Source Agency	TIC Foreign Exchange Reports
NTIS Subject Category	68A - Air Pollution & Control 91A - Environmental Management & Planning
Corporate Authors	Frankfurt Univ. (Germany, F.R.). Fachbereich Geowissenschaften.
Supplemental Notes	In German.
Document Type	Thesis
Title Note	Diss. (Dr.rer.nat.).
NTIS Issue Number	198504

Wet and Dry Deposition of Acid-Forming Atmospheric Trace Substances.

Wet and Dry Deposition of Acid-Forming Atmospheric Trace Substances.
DE84770377

Publication Date	1982
Personal Author	Perseke, C.
Page Count	207
Abstract	Wet/dry measurements have shown that wet deposition plays a dominant part in scavenging sulphate, nitrate and chloride vis-a-vis dry deposition of aerosol particles. In contrast to regional distribution of SO sub 2 and NOsub(x) concentrations, regional distributions of sulphate and nitrate concentrations in the rain show but minor regional differences between polluted and clean-air regions. Increased trace substance concentrations in precipitation are observed with low-amount precipitation. Deposition of free acids is of some interests for an evaluation of the effect of ''acid'' precipitations on ecosystems. In areas of high SO sub 2 and NO sub 2 concentrations, potential acid deposition by dry-deposited SO sub 2 and NOsub(i) may contribute more to acid deposition than wet H exp + deposition. In urban and rural regions, an enrichment of nitrate was found in the rain as opposed to the aerosol on comparing the sulphate/nitrate ratio in rain and aerosol. (ERA citation 09:046570)
Keywords	Acid Rain Nitrates Sulfates Aerosols Deposition Environmental Effects Gases Sample Preparation Trace Amounts Washout Foreign technology ERDA/500200 ERDA/520200 ERDA/510200
Source Agency	TIC Foreign Exchange Reports
NTIS Subject Category	68A - Air Pollution & Control 91A - Environmental Management & Planning
Corporate Authors	Frankfurt Univ. (Germany, F.R.). Fachbereich Geowissenschaften.
Supplemental Notes	In German.
Document Type	Thesis
Title Note	Diss. (Dr.rer.nat.).
NTIS Issue Number	198504