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Volume 11 (1965)
- Issue 4 Pages 213-
- Issue 3 Pages 153-
- Issue 2 Pages 81-
- Issue 1 Pages 1-
Volume 11, Issue 2
Displaying 1-9 of 9 articles from this issue
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[in Japanese]1965 Volume 11 Issue 2 Pages 81-86
Published: June 30, 1965
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSDownload PDF (900K) -
Otoharu Ishizaka, Hideko Ishihara, Takako Kitsukawa, Machiko Tokuhiro1965 Volume 11 Issue 2 Pages 87-93
Published: June 30, 1965
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESS(A) The absorbing capacity of electrolyzed alkaline solution for sulfur dioxide in air during electrolysis of sea water was examined. The absorbing capacity was found to be well enough and better at room temperature than the higher. From the above results, according to the result of (A), flue gas should be preliminarily cooled. In case of sea water used, a large amount of aqueous vapour might be obtained and condensed by cooling sea water. (B) The absorbing capacity of aqueous vapour for sulfur dioxide in air during condensation was also investigated. 100 L. of aqueous vapour (made from 66 ml of water) can absorb one-halh amount of sulfur dioxide in 100 ml of the air containing 4.5-10v/v% sulfur dioxide.View full abstractDownload PDF (958K) -
Shoichiro Yoshida1965 Volume 11 Issue 2 Pages 94-97
Published: June 30, 1965
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSA gas chromatographic method for the screening of organophosphorus and organochlorine insecticides is described, employing an apparatus with hydrogen flame ionization detector and column containing 1.5% SE-30 silicon polymer or 1.5% neopentyl glycol succinate as the liquid phase. Retention times are given for 22 kinds of insecticides chromatographed on each column at three different temperatures.View full abstractDownload PDF (481K) -
Keiiti Sakai1965 Volume 11 Issue 2 Pages 98-100
Published: June 30, 1965
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSFood preservatives, butyl p-hydroxybenzoate, benzoic acid, dehydroacetic acid, sorbic acid, salicylic acid, nitrofurazone and nitrofurylacrylamide were separated and identified by the thin layer chromatographic method. Thin layers of silica gel (200 mesh) containing 5% gypsum and the solvent system of benzene-chlorofolm-isopropanol (60 : 30 : 10) were used in this experiment. This method was applied to the quantitative determination of dehydroacetic acid in food stuffs. A small amount of dehydroacetic acid (0.005∼0.05mg) on the thin layer chromatogram was extracted with 0.1N sodium hydroxide and detemined by measuring the absorbance at 232 mμ of the extract.View full abstractDownload PDF (418K) -
Senji Suenaga1965 Volume 11 Issue 2 Pages 101-104
Published: June 30, 1965
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSDetermination of arsenic by densitmetry of mercuric bromide paper in Gutzeit method was investigated. Determination errors were within 10%, as coefficient of variation. In comparison of filter paper holder diameters of 6.5 mm and 10 mm, absorbances corrected to unit area were nearly equal. When uncorrected absorbances were approximately equal, error was small with diameter of 10 mm than 6.5 mm. Effects of zinc amount and bath temperature on coloration were not recognized. Dry lead acetate fibre was excellent in removal of hydrogen sulfide and convenient in handling. Natural scattered light in room did not affect the coloration.View full abstractDownload PDF (574K) -
Yoshio Kaneda, Yoshitomo Kochi1965 Volume 11 Issue 2 Pages 105-107
Published: June 30, 1965
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSThe silver diethyldithiocarbamate (SDDC) method was applied for the microdetermination of arsenic in compounds listed in J.P. VII., but the results were in disorder. The accuracy of the method was increased by the restriction of reaction temperature and improvement of the apparatus. Namely, the evolution flask was dipped in a water bath at 25°±1°C, the receiving test tube was dipped in a cold water bath (10°±1°C), and glass-pore of the receiving test tube was reduced with a glass-rod. The relative error of this improved method was 3.6%, and the coefficient of variation was 4%.View full abstractDownload PDF (397K) -
Otoharu Ishizaka, Machiko Tokuhiro1965 Volume 11 Issue 2 Pages 108-110
Published: June 30, 1965
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSBactericidal effects of electrolysis were studied on sea water in relation to its use for swimming pool. From the experimental results it has been revealed that an electrolyzed sea water at 15 m amp., 6.2V, for 8 mins. was effectively bactericidal for marine bacteria. Futhermore, the total expense for this method is roughly estimated at 5% of that so far used for chlorine disinfected water.View full abstractDownload PDF (456K) -
Saburo Kanno, Takayuki Tani1965 Volume 11 Issue 2 Pages 111-116
Published: June 30, 1965
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSIt has been discussed and proposed by the Central Pharmaceutical Affairs Council of Japan that the maximum allowable concentration of cyanide ion (CN-) in plating waste water should be under 2 ppm. The standard value of 2 ppm is not applied to such complex cyanides as ferrocyanide and ferricyanide, but to the free cyanide which is liberated by aeration through the test solution at pH 5.0 and 50∼55°C, because the toxicity of the complex cyanide is less than onethousandth of that of the free cyanide. The determination procedure of free cyanide ion listed in Japanese Industrial Standard (JISK0102-1964) was modified to improve in several points, for example, pH control of the test solution and the adoption of ball filter in aeration apparatus and 1N NaOH solution as absorbing solution for HCN. The methods for removal of HCN, such as alkali-chlorine method and Fe-complex method, were reviewed shortly.View full abstractDownload PDF (854K) -
Tokuichi Miyanaga1965 Volume 11 Issue 2 Pages 117-121
Published: June 30, 1965
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSEffects of diverse substances in the colorimetric analysis of F- by zirconium-alizarin method and the analytical results of Iizaka-Hot Springs were investigated. (1) As to the effects of Fe2+, Al3+, Mn2+, PO43- and alkalinity the same results as hitherto known were obtained, but regarding the effect of SO42- a different result was obtained. (2) It was found that the analytical result of F- at pH below 2.85 by this method is unreliable and some new information about the effects of K+, Na+, Ca2+, Mg2+ and BO2- was obtained. (3) Analytical results of F- in Iizaka Hot Spring should be correct, because the samples diluted by distilled water were used and the same results has been obtained by the method of Th (NO3)4 titration.View full abstractDownload PDF (614K)
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