Liquid chromatography analysis of chloride and nitrate with negative ultraviolet detection: Ambient levels and relative abundance of gas-phase inorganic and organic acids in southern California

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Environmental Science and Technology; (United States)

DOI:https://doi.org/10.1021/es00071a007· OSTI ID:5328369

Grosjean, D ^[1]

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1. DGA, Inc., Ventura, CA (USA)

A simple, cost-effective method is described for the determination of chloride and nitrate in environmental samples using conventional liquid chromatography equipment and negative photometry detection, i.e., the detection of weakly UV-absorbing analytes in a strongly UV-absorbing eluent. Method performance and validation are described, along with an example of application to the simultaneous measurements of gas-phase inorganic (nitric, hydrogen chloride) and organic (Formic, acetic) acids in ambient air. During a 10-day period of intensive measurements at a southern California smog receptor site, ambient levels of nitric acid and hydrogen chloride ranged up to 16.6 and 2.7 ppb, respectively (4-h samples). However, organic acids were more abundant than inorganic acids and accounted for 73.5% (ppb basis) of the total gas-phase acids.

• OSTI ID: 5328369
• Journal Information: Environmental Science and Technology; (United States), Journal Name: Environmental Science and Technology; (United States) Vol. 24:1; ISSN ESTHA; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
AIR QUALITY
CALIFORNIA
CHLORIDES
CHLORINE COMPOUNDS
CHROMATOGRAPHY
DEVELOPED COUNTRIES
ELECTROMAGNETIC RADIATION
ENVIRONMENTAL QUALITY
FEDERAL REGION IX
HALIDES
HALOGEN COMPOUNDS
LIQUID COLUMN CHROMATOGRAPHY
NITRATES
NITROGEN COMPOUNDS
NORTH AMERICA
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PERFORMANCE
RADIATIONS
SEPARATION PROCESSES
TESTING
ULTRAVIOLET RADIATION
USA
VALIDATION