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Volume 22 (1976)
- Issue 6 Pages 327-
- Issue 5 Pages 245-
- Issue 4 Pages 183-
- Issue 3 Pages 105-
- Issue 2 Pages 43-
- Issue 1 Pages 1-
Volume 22, Issue 2
Displaying 1-10 of 10 articles from this issue
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KEIICHIRO SHIMIZU, SHIZUO SUZUKI1976 Volume 22 Issue 2 Pages 43-49
Published: April 30, 1976
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSThe efficacy and the mode of action of fungicides were examined by the growth of Geotrichum candidum and by the incorporation of 14C-leucine by the fungus into the whole cell and into the protoplast. According to the fungal growth measured by turbidimetry, the most effective inhibitor was an organomercury compound. The inhibition of fungal growth was also observed with organotin compound and quaternary ammonium chloride. Organotin compound most strongly inhibited the incorporation of 14C-leucine into the whole cell. No remarkable relationship was observed between the inhibition rate of fungal growth and that of the incorporation of 14C-leucine. The experiment on the incorporation of 14C-leucine into the whole cell and into the protoplast indicated that organotin compound and organosulfur compound of carbamate type strongly inhibited the incorporation of 14C-leucine in the presence of a cell wall. As the organomercury compound, quaternary ammonium chloride, and chlorine water showed a strong affinity to G. candidum, these agents should be used for shock dosage, while organotin and organosulfur compounds seemed to be suitable for use as a continuous dosage.View full abstractDownload PDF (758K) -
KATSUHIKO TANAKA, KATSUHISA FUKAYA, SYOZO FUKUI, SABURO KANNO1976 Volume 22 Issue 2 Pages 50-55
Published: April 30, 1976
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSExamination on methylation of inorganic mercury in activated sludge, sewage, urine, and aqueous extract of feces gave the following results. (1) In the case of activated sludge, inorganic mercury was methylated irrespective of whether it was sterilized or not. This fact suggests that methylation by the sludge proceeded not noly biologically but also chemically. (2) In the case of the sediment of activated sludge, inorganic mercury was methylated, whether it was irradiated by xenon lamp not. (3) In the case of the supernatant of activated sludge, inorganic mercury was methylated only under light irradiation. (4) In the case of sewage, urine, and aqueous extract of feces, inorganic mercury was methylated only under light irradiation. These results suggest that inorganic mercury might be converted to methylmercury compounds in natural environment.View full abstractDownload PDF (664K) -
JOJI FUKUYAMA, YOUKI OSE, TAKAHIKO SATO1976 Volume 22 Issue 2 Pages 56-60
Published: April 30, 1976
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSTo investigate purification mechanism of the aerobic treatment of high-concentration swine waste, behavior of several components in swine waste on aeration was examined by the batch process and following results were obtained. (1) When COD value is conspicuously reduced, total solid, ignition loss, protein, and saccharides are markedly removed from the waste. (2) Lower fatty acids are removed completely by 24-hr aeration. This removal caused early high reduction of BOD. (3) Hexosamine, one of the components of protein-polysaccharide complex, was removed slowly four days. (4) As the purification progressed, substances not precipitated by standing but precipitated by centrifugation at 10000 rpm for 15 min were removed. (5) Substances responsible for COD remaining in the supernatant of the treated waste might be soluble components mainly composed of saccharides, pigments, and NO-2View full abstractDownload PDF (589K) -
OSAMU SAKAGUCHI, JUNKO TAKEDA, SHUHEI SAKAGUCHI1976 Volume 22 Issue 2 Pages 61-64
Published: April 30, 1976
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSChanges of some metabolite and enzyme activities concerned with hepatic glycogen metabolism in mice were investigated by the intraperitoneal injection of endotoxin extracted from Vibrio parahaemolyticus. A marked depletion of hepatic glycogen, a considerable increase in blood sugar and a remarkable increase in blood-lactic acid amount were observed in the poisond mice 1-3 hr postintoxication. There was an increase in the activities of hepatic phosphorylase and G-6-Pase at 1 hr postintoxication, but the latter activity decreased thereafter. Hyperglycemia of mice was found in proportion to the dose of endotoxin, but mice injected with a large quantity (40 mg/kg) of endotoxin showed evident hypoglycemia after 16 hr.View full abstractDownload PDF (506K) -
KAZUNORI MITANI1976 Volume 22 Issue 2 Pages 65-72
Published: April 30, 1976
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSSelective determination of methylmercury and inorganic mercury in various samples by steam distillation and flameless atomic absorption method was established. This method is based on the following facts : (1) Alkylmercury chlorides are distilled by steam distillation in hydrogen chloride solution added with sodium chloride, while inorganic mercury remains in the distillation flask. (2) In sodium hydroxide solution containing a cupric ion, both methylmercury and inorganic mercury compounds (in this case, distillate contains only methylmercury compound) are reduced by tin (II), while in sulfuric acid solution, only inorganic mercury compound is reduced by tin (II). (3) The atomic mercury generated by mercury compounds absorbs the mercury resonance line at 253.7 nm. This method eliminated the most serious troubles in the determination of methylmercury such as the formation of a emulsion at benzene extractin, particulary in biological samples. The recovery rates of methylmercury and inorganic mercury contained in blood and placenta are 90-95% and 100-105%, respectively. This method was found to be applicable to various materials such as blood, animal organs, fish, and water and solid of river or lake bed.View full abstractDownload PDF (831K) -
YOSHIO KANEDA, MASAHIRO IWAIDA1976 Volume 22 Issue 2 Pages 73-75
Published: April 30, 1976
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSCharacterization of the unidentified degradation product (I), formed by oxidation of Aldrin with calcium hypochlorite, was carried out by infrared (IR), nuclear magnetic resonance (NMR), and mass spectroscopy. IR spectrum of I indicated the disappearance of absorbance at 710 cm-1 for the bending vibration of =C-H in Aldrin and appearance of strong absorptions at 3400 and 1060 cm-1, suggesting the presence of secondary alcoholic hydroxyl groups. The absorbance of Cl-C=C-Cl was still present in I. High-resolution mass spectrum of I gave m/e 369.868 for M+ value, and an empirical formula of C10H8O2Cl6 (Calcd. m/e 369.865) was deduced. From these data, I was assumed to be a dihydroxyl derivative of 4, 5, 6, 7, 8, 8-hexachloro-4, 7-endomethano-hexahydroindene. It was concluded from the NMR spectrum that I is probably 4, 5, 6, 7, 8, 8-hexachloro-4, 7-endomethano-1, 3-trans-dihydroxy-1, 2, 2, 3, 3a, 7a-hexahydroindene.View full abstractDownload PDF (432K) -
KUNIHIKO MIYAMOTO, TSUYOSHI YOKOYAMA1976 Volume 22 Issue 2 Pages 76-80
Published: April 30, 1976
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSAn enzymic method for the determination of hydrogen peroxide in foods was investigated. A part of reaction in cholesterol determination was applied to the present method and the procedure was as follows. Hydrogen peroxide was extracted with methanol from homogenized foods. The extract (0.5ml) was added to the colorproducing reagent (0.02 M phenol-0.002 M 4-aminoantipyrine-0.015% (w/v) peroxidase-0.1 M phosphate buffer=1 : 1 : 1 : 2, v/v) (5 ml) and incubated for 15 min at 37°on a water bath. The colored solution was measured spectrophotometrically at 505 nm. The recovery of H2O2 added to Udon (Japanese noodles) was 91.1-92.1% and the coefficient of variation was 2.2-3.2%.View full abstractDownload PDF (596K) -
YOICHI AOKI, MITSUHARU TAKEDA, MITSURU UCHIYAMA1976 Volume 22 Issue 2 Pages 81-90
Published: April 30, 1976
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSAn analytical method for 28 organophosphorus pesticides by flame photometric detector (FPD) gas chromatography was established. Five kinds of liquid phases (10% DC-200, 0.5% OV-225, 10% QF-1, 10% DC-200+15% QF-1, and 5% DC-200+0.5% EPON resin 1009) were employed for the detection of the pesticides. Detection limit of the pesticides which could be separatly detected under each condition was in the range of 0.001 ng (Ethion) to 12.5 ng (2-chloro-1-(2, 4, 5-trichlorophenyl) vinyl dimethyl phosphate (CVMP)). Combined application of two or more of the operating conditions effected a complete separation of all the pesticides examined from each other on their gas chromatograms. Effect of hydrogen and air flow rates on the response of FPD to the pesticides was examined. Change in both flow rates did not alter the response of most of the pesticides excessively, but in the cases of Dichlorvos, Vamidothion, and CVMP, an extensive alteration in their peak heights was observed. If the hydrogen and air flow rates were controlled to 150-200 and 50-100 ml/min, respectively, all of the pesticides examined could be sensitively detected by FPD gas chromatography.View full abstractDownload PDF (978K) -
TADASHI KOZU, SHIGEMITSU KOMAZAWA, SHIGEYOSHI KONUMA, TAKEO WADA1976 Volume 22 Issue 2 Pages 91-93
Published: April 30, 1976
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSDipterex in blood was determined by gas-liquid chromatography with a flame photometric detector on 2.0-m glass column packed with 25% carbowax 20 M at 180°. Determination was carried out successfuly by using trimethyl phosphate as an internal standard. Dipterex was extracted from blood with ether after salting-out with magnesium sulfate and adjusting to pH 5.8. The clean-up procedure suitable for the extract was carried out by a column packed with silica gel containing 15% water by weight. The component was eluted with acetone : methanol (90 : 10) mixture. The recovery of Dipterex added to blood was 94.3%.View full abstractDownload PDF (426K) -
Hiroshi Kozuka1976 Volume 22 Issue 2 Pages 94-104
Published: April 30, 1976
Released on J-STAGE: May 30, 2008
JOURNAL FREE ACCESSApplication of neutron activation analysis for airborne dusts, water pollutants, and biological samples was made in a cooperative research. The subthemes in this research were chosen in the special field of each of the researchers and a common purpose was settled to clarify the concentration of trace elements in the environmental samples at the normal or background level.View full abstractDownload PDF (1171K)
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