Determination of acidity in ambient air, Phase 2. Final report, 1 February 1985-31 December 1987

Technical Report · Tue Sep 01 04:00:00 EDT 1987

OSTI ID:5246668

Appel, B R; Tokiwa, Y; Povard, V; Kothny, E L

A laboratory and field study was conducted as part of a continuing assessment of methodologies for measurement of gaseous and particulate acids in the atmosphere. The acidic species included the gases nitric acid (HNO/sub 3/), nitrous acid (HONO), hydrochloric acid (HCl) and the particulate phase species, sulfuric acid. Nitric acid measurement by the automated tungstic acid technique (TAT) was evaluated for interferences due to NO, NO/sub 2/ and HONO. Loss of nitric acid in passage through various types of Teflon tubing as well as within a variety of cyclones was also studied. The annular denuder method (ADM) for HNO/sub 3/ was compared to the denuder difference method (DDM). An effort was made to assess NO/sub 2/ interference in HONO measurement with the ADM.

• Research Organization: California Dept. of Health Services, Berkeley (USA). Air and Industrial Hygiene Lab.
• OSTI ID: 5246668
• Report Number(s): PB-88-185020/XAB; CA/DOH/AIHL/SP-47
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACID RAIN
AEROSOLS
AIR POLLUTION MONITORING
ALKALINE EARTH METAL COMPOUNDS
ATMOSPHERIC PRECIPITATIONS
CHALCOGENIDES
COATINGS
COLLOIDS
DISPERSIONS
DOCUMENT TYPES
FILTERS
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MEASURING METHODS
MIXTURES
NAPAP
NITRIC ACID
NITROUS ACID
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
PH VALUE
PROGRESS REPORT
RAIN
SOLS
SULFURIC ACID
TUBES