TY - JOUR
T1 - Chemical form of arsenic compounds and distribution of their concentrations in the atmosphere
AU - Nakamura, Masaru
AU - Matsuzono, Yoshiaki
AU - Tanaka, Shigeru
AU - Hashimoto, Yoshikazu
PY - 1990
Y1 - 1990
N2 - In order to understand the chemical form of arsenic compounds and their distribution in unpoluted areas, concentrations of arsenic compounds in the marine atmosphere were measured in several islands in several oceans. Furthermore, concentration of arsenic compounds were also measured between Tokyo and the Syowa station during a cruise by the Antarctic observation boat Shirase. Aerosols in the marine atmosphere were collected by a high‐volume air sampler with a quartz fiber filter. After extracting a sample, an analysis of arsenic compounds in the sample solution was carried out by hydride generation atomic absorption spectrophotometry combined with a cold trap of liquid nitrogen. This technique has a high analytical sensivity, so that it is suitable to determine arsenic compounds at trace level. The atmospheric concentrations of arsenic compounds were at the same level over the Pacific Ocean and the Atlantic Ocean. The concentration range of arsenic compounds over these oceans was 100–200 pg m−3 for inorganic arsenic, 10–20 pg m−3 for inorganic arsenic. It is considered that these values are the background concentrations in the northern hemisphere. On the other hand, over he Antarctic Ocean in the southern hemisphere, the atmospheric concentrations of inorganic arsenic were very low, and organic arsenics were little found. This fact indicates that arsenic in the atmosphere is strongly influenced by anthropogenic sources.
AB - In order to understand the chemical form of arsenic compounds and their distribution in unpoluted areas, concentrations of arsenic compounds in the marine atmosphere were measured in several islands in several oceans. Furthermore, concentration of arsenic compounds were also measured between Tokyo and the Syowa station during a cruise by the Antarctic observation boat Shirase. Aerosols in the marine atmosphere were collected by a high‐volume air sampler with a quartz fiber filter. After extracting a sample, an analysis of arsenic compounds in the sample solution was carried out by hydride generation atomic absorption spectrophotometry combined with a cold trap of liquid nitrogen. This technique has a high analytical sensivity, so that it is suitable to determine arsenic compounds at trace level. The atmospheric concentrations of arsenic compounds were at the same level over the Pacific Ocean and the Atlantic Ocean. The concentration range of arsenic compounds over these oceans was 100–200 pg m−3 for inorganic arsenic, 10–20 pg m−3 for inorganic arsenic. It is considered that these values are the background concentrations in the northern hemisphere. On the other hand, over he Antarctic Ocean in the southern hemisphere, the atmospheric concentrations of inorganic arsenic were very low, and organic arsenics were little found. This fact indicates that arsenic in the atmosphere is strongly influenced by anthropogenic sources.
KW - Hydride generation
KW - arsenic
KW - atomic absorption spectrophotometry
KW - dimethylarsinic acid
KW - environment
KW - marine atmosphere
KW - monomethylarsonic acid
KW - trimethylarsine oxide
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U2 - 10.1002/aoc.590040308
DO - 10.1002/aoc.590040308
M3 - Article
AN - SCOPUS:84990498253
VL - 4
SP - 223
EP - 230
JO - Applied Organometallic Chemistry
JF - Applied Organometallic Chemistry
SN - 0268-2605
IS - 3
ER -