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Volume 20 (1974)
- Issue 6 Pages 305-
- Issue 5 Pages 239-
- Issue 4 Pages 179-
- Issue 3 Pages 113-
- Issue 2 Pages 47-
- Issue 1 Pages 1-
Volume 20, Issue 6
Displaying 1-11 of 11 articles from this issue
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MASAYOSHI YAMAGUCHI, MASAHIKO NISHIZAWA, YASUNOBU SUKETA, TAKEO YAMAMO ...1974 Volume 20 Issue 6 Pages 305-309
Published: December 31, 1974
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSExperiments were designed to determine whether chelating agents would affect the amount of lead and of calcium, and alkaline phosphatase activity in the liver of rats treated with lead acetate. The rats were intraperitoneally given 200 mg/kg of sodium citrate and calcium disodium ethylenediaminetetraacetate (Na2Ca-EDTA) 6 days afer a single intraperitoneal administration of 200 mg lead/kg. The amount of liver calcium increased by administration of lead was reduced to the range of normal level after treatment with chelating agents, and lead accumulated after lead administration also decreased significantly. On the other hand, the hepatic alkaline phosphatase activities 6 days after lead administration decreased to about one-quarter compared with control rats. However, by the injection of sodium citrate or Na2Ca-EDTA to rats administered lead, the hepatic alkaline phosphatase activity recovered approximately to two-thirds and one-half of the control value, respectively. Thus, the removal of lead and calcium deposited in the liver by injection of chelating agents elevated hepatic alkaline phosphatase activity which was significantly inhibited after lead administration. Also, the data obtained in the present studies suggest that sodium citrate has an antagonistic effect on lead intoxication.View full abstractDownload PDF (656K) -
TAKAHIKO SATO, YOUKI OSE1974 Volume 20 Issue 6 Pages 310-316
Published: December 31, 1974
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSPoly-β-hydroxybutyric acid (PHB) was considered as one of the floc-forming substances in activated sludge. PHB content in activated sludge was examined and the following results were obtained. 1. PHB was isolated from activated sludge acclimatized with synthetic sewage. The melting point and infrared spectrum of this substance agreed with those of bacterial PHB. Elemental analytical values also agreed with theoretical values. 2. Turbidiy was recognized as a useful method for quantitative determination of PHB in activated sludge. 3. When glucose was added to activated sludge, PHB content in activated sludge increased, but decreased after several hours. 4. When various substances were added to activated sludge, PHB content increased. Compared with PHB content after addition of glucose, PHB content was larger after addition of acetate or alanine, almost the same after addition of galactose, peptone, casein, or glutamate, and smaller after addition of urea, saccharose, or starch. 5. Nitrogen sources were added to activated sludge simultaneously with glucose and PHB production was compared with that after addition of glucose alone. The effect of nitrogen sources was not apparent. 6. Almost the same amount of PHB as in acclimatized activated sludge was determined in the sludge from aerobic treatment plant of non-diluted night soil and non-diluted swine excrement.View full abstractDownload PDF (799K) -
EIICHI HAYASHI, MASARU KUNITOMO, MAMORU TERADA, TAKAKO TOMITA1974 Volume 20 Issue 6 Pages 317-321
Published: December 31, 1974
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSAcute and subacute toxicity of dimethylacrylamide in mice was studied. LD50 by a single oral dose was 485 mg/kg (male) and 460 mg/kg (female), and that by subcutaneous injection was 580 mg/kg (male) and 590 mg/kg (female). In a subacute toxicity test for a 6-week period, no adverse change attributable to the ingestion of dimethylacrylamide was observed in body weight, gross physiological appearance, and in clinical, histopathological, and hematological examinations, except a slight increase in the weight of the liver, spleen, and testis.View full abstractDownload PDF (553K) -
YOSHINORI KATAGIRI, TAKENORI SHIMADA, SHOZO FUKUI, SABURO KANNO1974 Volume 20 Issue 6 Pages 322-327
Published: December 31, 1974
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSAn improved method for the determination of nitrogen oxides in stack gases has been developed, the principle of which is based on the measurement of nitrate ion, produced by the oxidative absorption of nitrogen oxides with ozone and hydrogen peroxide, by nitrate ion electrode. The oxidizing agent used in the conventional method such as phenol disulfonic acid (PDS) method was molecular oxygen, and it required more than 16 hr for the complete oxidation of nitrogen monoxide. The use of ozone instead of oxygen resulted in a considerable reduction in time, because oxidation of nitrogen monoxide was completed within several minutes. The use of nitrate electrode was advantageous in simple procedure and reproducible results. Furthermore, the proposed method was not affected in the presence of 7000 ppm of SO2, 1800 ppm of HCl, and 5000 ppm of NH8. The analytical results obtained by both the proposed method and the PDS method showed agreement within 5%.View full abstractDownload PDF (681K) -
TOSHIKO KOSHIMIZU, KAZUYUKI TAKAMATSU, TOSHIAKI ASO, MIKIHIRO KANEKO, ...1974 Volume 20 Issue 6 Pages 328-331
Published: December 31, 1974
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSIn the determination of total cyanide ions in water, which are liberated by the distillation of the sample in the presence of ethylenediamine tetraacetic acid (EDTA), it is not yet clarified whether the addition of EDTA is effective or not for the liberation of free cyanide ion from the metal cyanide complexes. It was found that, without the help of EDTA, free cyanide ion was liberated almost quantitatively from most of metal complexes belonging to group A except three metal complexes, K4Fe (CN)6+Zn2+, K4Fe (CN)6+Cu2+, and K3Fe (CN)6+Cu2+. Liberation of cyanide ion from these three metal complexes was not quantitative in the absence of EDTA, but was quantitative in the presence of EDTA. From these facts, the addition of EDTA is recommended for the determination of total cyanide ions in waste water.View full abstractDownload PDF (476K) -
TOSHIKO KOSHIMIZU, KAZUYUKI TAKAMATSU, MIKIHIRO KANEKO, SHOZO FUKUI, S ...1974 Volume 20 Issue 6 Pages 332-336
Published: December 31, 1974
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSAn interesting fact was found that the nitrite ion reacted not only with ethylenediaminetetraacetic acid (EDTA) but with most of the amines to liberate a cyanide ion, the concentration of which frequently exceeded the regulation limit provided by the Japanese law (source limit : 1ppm, environmental limit : 0.1ppm). Therefore, in the case of waste water containing a nitrite ion, a denitriting agent should be added before distillation of the sample solution. Only ammonium sulfamate was suitable as a denitriting agent, because sulfanilamide reacted with the nitrite ion to form a cyanide ion, sodium azide reacted with a cyanide ion to decompose the cyanide ion itself, and urea did not eliminate the nitrite ion sufficiently.View full abstractDownload PDF (608K) -
KINZO NAGASAWA, TATSUO SHINOZUKA, AKIRA OGAMO1974 Volume 20 Issue 6 Pages 337-340
Published: December 31, 1974
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSTrifluoroacetolysis was performed by heating sodium cyclamate in trifluoroacetic anhydride at 90° for 1 hr. The reaction proceeded quantitatively to form N-trifluoroacetyl cyclohexylamine. The reaction was successfully applied to gas chromatographic determination of a micro-amount of sodium cyclamate in the range of 0.025-5 mg.View full abstractDownload PDF (580K) -
AKIRA HASEGAWA, GORO URAKUBO1974 Volume 20 Issue 6 Pages 341-343
Published: December 31, 1974
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSPregnant rats were used for experiment at 20 th day after gestation, which was determined by the presence of a vaginal plug after mating. Sodium selenite[75Se]solution was given intravenously to a number of pregnant rats and the distribution pattern of 75Se in the mother and fetus was determined by measuring radioactivities 1 hr after injection. In the mother rats, high concentration of 75Se was found in the liver, kidney, pancreas and lung, the concentration being twice higher than that in the blood. The transfer of 75Se to fetus was not so marked but radioactivity 5% of the dose was found in the whole body of a litter. High concentration of 75Se was observed in the liver, adrenal and kidney of the fetuses, concentration of 75Se in the bone, spleen and gastro-intestinal tract was the same as that in the whole body of fetuses.View full abstractDownload PDF (499K) -
KATUHIKO TANAKA, KATSUHISA FUKAYA, SYOZO FUKUI, SABURO KANNO1974 Volume 20 Issue 6 Pages 344-348
Published: December 31, 1974
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSFundamental analytical conditions of the combustion method for the determination of mercury was examined. This method consists of the combustion of the material, collection of mercury as gold amalgam, and regeneration of mercury. In the determination of total mercury in fish tissues, sea and river bottom sediments, it has been clarified that the recovery of added mercury was not quantitative when the material was not pretreatment, but quantitative if treated beforehand with alkali. The method was markedly interfered by various acids such as sulfuric, nitric and hydrochloric acids. Therefore, in the determination of total mercury in fish tissues and bottom sediments, in which acid components are usually contained, the recovery became quantitative by addition of an alkaline solution to the material. Analysis on one material is completed within about 15 minutes, so that this method becomes more effective in the simultaneous treatment of a number of materials.View full abstractDownload PDF (631K) -
KATSUHIKO TANAKA, KATSUHISA FUKAYA, SYOZO FUKUI, SABURO KANNO1974 Volume 20 Issue 6 Pages 349-354
Published: December 31, 1974
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSA simple and sensitive method for the quantitative determination of organic mercury in waste water, fish tissues, and sea or river bottom sediments is described. This method consists of extraction of organic mercury from the material with benzene, reverse-extraction of the organic mercury with cysteine acetate solution, and combustion of the solution in the system described earlier. This method has the following features : (1) It is not necessary to use organic mercury such as methylmercuric chloride, ethylmercuric chloride, butylmercuric chloride, or phenylmercuric acetate, as the standard substance in the determination of organic mercury compounds, and inorganic mercuric chloride can be used as the standard in this method. (2) Organic mercury compounds can be completely separated from inorganic compounds by using benzene and cysteine acetate solution. (3) Analytical values of organic mercury compounds obtained by the proposed method agree completely with that obtained by the gas chromatographic analysis with electron captuer detector (ECD-GC method). (4) In carrying out this proposed method, it is not necessary to obtain any licence for handling radioactive rays which is required in the case of the ECD-GC method. Satisfactory results have been obtained by applying this proposed method to the analysis of organic mercury in various materials.View full abstractDownload PDF (648K) -
ATSUKO ADACHI, MIHOKO SAWANO, JUNKO UEMURA, TADASHI KOBAYASHI1974 Volume 20 Issue 6 Pages 355-357
Published: December 31, 1974
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSThe sulfur oxides concentration in atmosphere was measured thirty times at Kobe Women's College of Pharmacy, both by the simplified air sampler-conductivity method and by auto-conductivity method simultaneously. When the values from the two methods were compared, good relationship was obtained. It was concluded from results that the simplified air sampler-conductivity method is available as a simplified and practical method.View full abstractDownload PDF (436K)
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