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Volume 2 (1989)
- Issue 4 Pages 237-
- Issue 3 Pages 177-
- Issue 2 Pages 79-
- Issue 1 Pages 1-
Volume 2, Issue 3
Displaying 1-6 of 6 articles from this issue
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Toshiaki ISHII, Yuichi TAKAKU, Masafumi ISHIKAWA, Mitsue MATSUBA, Masu ...1989 Volume 2 Issue 3 Pages 177-191
Published: July 31, 1989
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSThe applicability of inductively coupled plasma mass spectrometry (ICP-MS) to the determination of elements in marine organisms was compared with that of inductively coupled plasma atomic emission spectrometry (ICP-AES). Both analytical techniques indicated the excellent linearity over a very wide dynamic range covering 2-4 orders of magnitude. The detection limits of elements by ICP-MS were ten or one hundred times better than those by ICP-AES. The precision and accuracy of ICP-MS was slightly inferior to ICP-AES. For the quantitative analysis of medium mass range elements (Cr, Mn, Fe, Ni, Cu, Zn, etc.), matrix interferences of ICP-MS were mainly observed as spectral overlaps from a large amount of coexisting elements contained in the biological samples. It was found that background ions from atmosphere, water, and argon plasma interfered with some isotopes of elements of interest. It was concluded that ICP-MS is one of the most effective multielement analytical techniques for marine organism samples, because of large dynamic ranges, low detection limits and satisfactory precision and accuracy, although special attention to spectral interferences from molecular ions such as oxides, halides, hydrides, dimer etc. is necessary.View full abstractDownload PDF (1320K) -
Shin-ichi FUJITA, Robert K. KAWARATANI, Akira TAKAHASHI1989 Volume 2 Issue 3 Pages 193-204
Published: July 31, 1989
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSA simple long-term precipitation scavenging model to predict the wet deposition of gaseous and particulate emissions around point sources is introduced. This model is applied to predict the annual wet deposition of volcanic gases and dust, in particular sulfur compounds around the Sakurajima volcano on Kyushu Island, Japan . Sensitivity to annual wind frequency, wind velocity and precipitation intensity of deposition patterns is also discussed. Example computations show that cumulative wet deposition of sulfur compounds is strongly influenced by the scavenging coefficient of sulfur dioxide and sulfate particulates. Total wet deposition of sulfate is controlled by large particles near the volcano and by small particles and sulfur dioxide at distance. Mass median diameter of the particles tend to become smaller with the distance from the summit. Although most of the sulfur in volcanic cloud is in the form of sulfur dioxide, relatively little of this is washed out by precipitation. The contribution of below cloud processes to deposition of sulfur in this area can be adequately accounted for by assuming the scavenging of sulfate particles despite their relatively small share of total sulfur in the atmosphere.View full abstractDownload PDF (1507K) -
[in Japanese], [in Japanese]1989 Volume 2 Issue 3 Pages 205-208
Published: July 31, 1989
Released on J-STAGE: June 28, 2010
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[in Japanese]1989 Volume 2 Issue 3 Pages 209-212
Published: July 31, 1989
Released on J-STAGE: June 28, 2010
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[in Japanese]1989 Volume 2 Issue 3 Pages 213-218
Published: July 31, 1989
Released on J-STAGE: June 28, 2010
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[in Japanese]1989 Volume 2 Issue 3 Pages 219-229
Published: July 31, 1989
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (1995K)
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