B U N S E K I K A G A K U

Vol. 47 No. 4

April, 1998


Original Papers

Determination of Trace Amounts of Sulfur in Iron and Steel by Isotope Dilution

ICP-MS with a Hydrogen Sulfide Evolution Technique

Hirohito Naka, Hirohumi Kurayasu, Li Ma and Taketoshi Nakahara 203

Speciation of Inclusions in Aluminium by X-ray Diffraction and Fluorescence

Methods Combined with Preconcentration by Filtration and Selective Dissolution

Teruo Kitamura, Shigemi Tanimoto, Masaaki Iwatsuki and Shintaro Nishida 211

Submilligram Determination of Organic Sulfur Using Sealed Tube

Combustion Method

Keiichiro Hozumi, Ayako Satoh and Naoshige Akimoto 219

Fluorimetric Flow Injection Analysis of the Total Amounts of Low-Molecular-

Weight Aldehydes in Rain Water

Harumitsu Nishikawa, Hideki Nagasawa and Tadao Sakai 225

Direct Determination of High-Density Lipoprotein- and Total Cholesterol

in Serum Using a Peroxidase-Entrapped Electrode and

Polyethylene Glycol-Modified Enzymes

Hideaki Kinoshita, Takeo Chijiwa, Masaki Torimura, Kenji Kano and Tokuji Ikeda 233


Technical Papers

Interlaboratory Studies for the Analysis of Metal Ions in Solution by Isotope

Dilution/ICP-MS

Naoko Nonose, Akiharu Hioki, Masayasu Kurahashi and Masaaki Kubota 239


Notes

Substituent Effect by Chlorine, Bromine and Iodine Atoms for 13C and 29Si NMR

Chemical Shifts in Halogenated Methane and Halogenated Silane

Takayuki Abe, Yasuhide Ohuchi and Chikakiyo Nagata 249



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