Controlling factors of weak acid and base concentrations in urban dewwater - Comparison of dew chemistry with rain and fog chemistry

Masaki Takeuchi, Hiroshi Okochi, Manabu Igawa

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Dewwater was collected from January 1993 to December 2000 in Yokohama, Japan, and analyzed for weak acid anions with other major chemical components. The volume-weighted average and medium pH of the dewwater were 4.88 and 6.08, respectively, at our sampling site. Weak acids (carbonate, nitrite, sulfite, formate, and acetate ions) were the major species in the dewwater and were several times higher than those in the rain- and fogwater. The concentrations of these species and ammonium ion can be estimated by the resistance model. The estimated values of N(III) correlate relatively well with the measured values, which shows the origin of N(III) in dewwater is nitrous acid in the ambient air. On the other hand, ammonium ion in the dewwater originated from not only gaseous ammonia but also aerosol ammonium ions. Hydrogensulfite ions in the dewwater which originated from sulfur dioxide are an important species as the precursor of the sulfate and they were stabilized by forming hydroxyalkanesulfonate (HASA). Formic acid and acetic acid in the dewwater originated mainly from gas, while the oxalic acid is from aerosol.

Original languageEnglish
Pages (from-to)757-764
Number of pages8
JournalBulletin of the Chemical Society of Japan
Volume75
Issue number4
DOIs
Publication statusPublished - 2002
Externally publishedYes

Fingerprint

Fog
formic acid
Rain
Ions
Acids
Ammonium Compounds
Aerosols
Nitrous Acid
Oxalic Acid
Sulfur Dioxide
Sulfites
Carbonates
Nitrites
Ammonia
Acetic Acid
Sulfates
Anions
Acetates
Gases
Sampling

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

@article{626f6e688e8445988752fcea502b5249,
title = "Controlling factors of weak acid and base concentrations in urban dewwater - Comparison of dew chemistry with rain and fog chemistry",
abstract = "Dewwater was collected from January 1993 to December 2000 in Yokohama, Japan, and analyzed for weak acid anions with other major chemical components. The volume-weighted average and medium pH of the dewwater were 4.88 and 6.08, respectively, at our sampling site. Weak acids (carbonate, nitrite, sulfite, formate, and acetate ions) were the major species in the dewwater and were several times higher than those in the rain- and fogwater. The concentrations of these species and ammonium ion can be estimated by the resistance model. The estimated values of N(III) correlate relatively well with the measured values, which shows the origin of N(III) in dewwater is nitrous acid in the ambient air. On the other hand, ammonium ion in the dewwater originated from not only gaseous ammonia but also aerosol ammonium ions. Hydrogensulfite ions in the dewwater which originated from sulfur dioxide are an important species as the precursor of the sulfate and they were stabilized by forming hydroxyalkanesulfonate (HASA). Formic acid and acetic acid in the dewwater originated mainly from gas, while the oxalic acid is from aerosol.",
author = "Masaki Takeuchi and Hiroshi Okochi and Manabu Igawa",
year = "2002",
doi = "10.1246/bcsj.75.757",
language = "English",
volume = "75",
pages = "757--764",
journal = "Bulletin of the Chemical Society of Japan",
issn = "0009-2673",
publisher = "Chemical Society of Japan",
number = "4",

}

TY - JOUR

T1 - Controlling factors of weak acid and base concentrations in urban dewwater - Comparison of dew chemistry with rain and fog chemistry

AU - Takeuchi, Masaki

AU - Okochi, Hiroshi

AU - Igawa, Manabu

PY - 2002

Y1 - 2002

N2 - Dewwater was collected from January 1993 to December 2000 in Yokohama, Japan, and analyzed for weak acid anions with other major chemical components. The volume-weighted average and medium pH of the dewwater were 4.88 and 6.08, respectively, at our sampling site. Weak acids (carbonate, nitrite, sulfite, formate, and acetate ions) were the major species in the dewwater and were several times higher than those in the rain- and fogwater. The concentrations of these species and ammonium ion can be estimated by the resistance model. The estimated values of N(III) correlate relatively well with the measured values, which shows the origin of N(III) in dewwater is nitrous acid in the ambient air. On the other hand, ammonium ion in the dewwater originated from not only gaseous ammonia but also aerosol ammonium ions. Hydrogensulfite ions in the dewwater which originated from sulfur dioxide are an important species as the precursor of the sulfate and they were stabilized by forming hydroxyalkanesulfonate (HASA). Formic acid and acetic acid in the dewwater originated mainly from gas, while the oxalic acid is from aerosol.

AB - Dewwater was collected from January 1993 to December 2000 in Yokohama, Japan, and analyzed for weak acid anions with other major chemical components. The volume-weighted average and medium pH of the dewwater were 4.88 and 6.08, respectively, at our sampling site. Weak acids (carbonate, nitrite, sulfite, formate, and acetate ions) were the major species in the dewwater and were several times higher than those in the rain- and fogwater. The concentrations of these species and ammonium ion can be estimated by the resistance model. The estimated values of N(III) correlate relatively well with the measured values, which shows the origin of N(III) in dewwater is nitrous acid in the ambient air. On the other hand, ammonium ion in the dewwater originated from not only gaseous ammonia but also aerosol ammonium ions. Hydrogensulfite ions in the dewwater which originated from sulfur dioxide are an important species as the precursor of the sulfate and they were stabilized by forming hydroxyalkanesulfonate (HASA). Formic acid and acetic acid in the dewwater originated mainly from gas, while the oxalic acid is from aerosol.

UR - http://www.scopus.com/inward/record.url?scp=0036093276&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036093276&partnerID=8YFLogxK

U2 - 10.1246/bcsj.75.757

DO - 10.1246/bcsj.75.757

M3 - Article

AN - SCOPUS:0036093276

VL - 75

SP - 757

EP - 764

JO - Bulletin of the Chemical Society of Japan

JF - Bulletin of the Chemical Society of Japan

SN - 0009-2673

IS - 4

ER -