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

被引：25

作者：

GROSJEAN, D

机构：

[1] DGA, Inc., Ventura, California 93003, 4526 Telephone Road

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1990年 / 24卷 / 01期

关键词：

D O I：

10.1021/es00071a007

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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. © 1990, American Chemical Society. All rights reserved.

引用

页码：77 / 81

页数：5

共 23 条

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