巻号一覧
19 巻, 3 号
選択された号の論文の7件中1～7を表示しています
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村上 敏治1965 年 19 巻 3 号 p. 149-154
発行日: 1965年
公開日: 2013/02/19
ジャーナル フリーPotassium was precipitated in the presence of magnesium chloride, calcium chloride or sodium chloride with an excess of a standard solution of sodium tetraphenylborate, and the excess was titrated with the standard solution of benzalkonium chloride by using titan yellow or eriochrome azurol G as an indicator.
The error of the present method for determining potassium was within 5-9 ppt in the presence of the appreciable amout of these salts, but the presence of 2g sodium chloride exercised a remarkable influence upon the determination. It was presumed that the error arising from the presence of sodium chloride could be eliminated appropriately by applying a potassium titer (F) of a standard solution of sodium tetraphenylborate which was measured by precipitating potassium tetraphenylborate in the presence of the equal amount of sodium chloride.抄録全体を表示PDF形式でダウンロード (12013K) -
重松 恒信, 上杉 勝弥, 田伏 正之1965 年 19 巻 3 号 p. 155-158
発行日: 1965年
公開日: 2013/02/19
ジャーナル フリーThis paper deals with the behaviors of rare earth elements in the concentrating process of sea water. Cerium and europium were chosen as representatives of rare earth elements and their behaviors were traced by using radioactive isotopes,144Ce and 152, 154Eu.
Immediately after the concentrating process was begun, a considerable amount of cerium and europium was observed to be lost from the solution owing to the adsorption on the inside wall of the vessel. These elements were gradually lost from the solution at the range of 10 to 70%(in volume) in the ratio of the evaporation. And when more than 70% of sea water was evaporated, these elements were rapidly transferred into the deposit, but the most part of them was not distributed in the gypsum deposit.
Before the evaporation ratio reached 70%, the concentration at boiling temperature gave the greater loss than in the case of temperature of 50-60°C, but the reverse trend was found when more than 70% was evaporated.抄録全体を表示PDF形式でダウンロード (8466K) -
海水中の微量成分の利用に関する研究 (第4報)尾方 昇1965 年 19 巻 3 号 p. 158-163
発行日: 1965年
公開日: 2013/02/19
ジャーナル フリー本研究は, ば水酸化第二鉄を用いる凝集処理により海水中の有用な微量成分を回収するとともに有害な微量成分を除去するために行なつた. 実験の対象は14の元素で, 銅, 亜鉛, 鉛, スズ, ヒ素, マンガン, モリブデン, クロム, ウラン, バナジウム, リン, カドミウム, 水銀およびビスマスである. 実験はこれらのイオンを3～23μgを含む海水1lに塩化第二鉄溶液を鉄イオンとして10mg加え, アンモニア水または塩酸でその溶液のpHを3～9の範囲にわたり調節した. 一夜放置後生成した水酸化第二鉄の沈殿をロ過し, 沈殿またはロ液中のこれらの成分を定量し, この結果から回収率を計算した.
実験結果これらの元素が三つのグループに分類された. 第1に酸性溶液から回収されるもので, スズ, ヒ素, モリブデン, およびバナジウムである. 第2にアルカリ性溶液から回収されるもので, 銅, 亜鉛, 鉛, マンガン, クロム, 水銀, カドミウムおよびビスマスである.第3のグループはpH3～9の全域で回収さ. れるもので, リシがある. しかしpH7附近ではモリブデンを除くいずれの元素も高い共沈率を示したので, ほとんどの海水中の微量成分はpH7で水酸化第二鉄により凝集処理を行なつて同時採取することが可能な見通しを得た.
なお, これらの実験結果および過去の共沈に関する実験例から共沈するpH領域とイオンポテンシアルの間に相関が見出され, イオンポテンシアル6以下ではアルカリ性で共沈し, 6以上では酸性で共沈する傾向があり, また6附近では広いpH領域で共沈する. なおリンはこの傾向に従わなかつた.抄録全体を表示PDF形式でダウンロード (13296K) -
イオン交換膜かん水の濃縮に関する研究 (第1報)本山 正夫, 平野 武蔵, 岡 俊平1965 年 19 巻 3 号 p. 164-167
発行日: 1965年
公開日: 2013/02/19
ジャーナル フリーA study was carried out to examine the composition of 15 kinds of brines produced by the electrodialysis of sea water with ion exchange resin membranes,(i. e. ion exchange membrane brines). Of those brines, 6 kinds were produced in commercial or large scale electrodialysers in various Japanese salt factories and laboratories and were analysed in our laboratory, while the analytical results of the other 9 kinds of brines were obtained from those reported in various papers.
As the results of the study, the following were obtained;
(1) The ratio of each ion to the total solid composition in brines and sea water was calculated, and the increment and decrement due to the concentration of sea water were compared. The ratio of K+ in brines was found to be 3/2 times as much in conparison with that of the sea water, while that of SO2-4 was found to be much less than that of sea water and could be classified into 2 groups, namely brines with 1/5 and those with 3/5.
(2) The compositions of those brines could be classified into two species, namely a-type belonging to the 6 components system: NaCl-KCl-MgCl2-CaCl2-CaSO4-H2O and b-type belonging to the 6 components system: NaCl-KCl-MgCl2-MgSO4-CaSO4-H2O. Whether a brine belongs to a-type or b-type was considered to be due to the characteristics of the membranes and the type of electrodialyser.
(3) Assuming that the total CaSO4 in brines crystallizes out before the beginning of NaCl crystalization, the composition of brines could be taken on the equilibrium diagrams. Namely, a-type on the diagram for the 5 components system; NaCl-KCl-MgCl2-CaCl2-H2O, and b-type on the diagram for the 5 components system; NaCl-KCl-MgCl2-MgSO4-H2O. All of these 15 points were found in the field of KCl. The authors concluded that, the change of composition of all brines due to concentration could be calculated graphically by using the two diagrams.抄録全体を表示PDF形式でダウンロード (9007K) -
室谷 寛, 島崎 長一郎1965 年 19 巻 3 号 p. 168-171
発行日: 1965年
公開日: 2013/02/19
ジャーナル フリーProtein phosphate in dry state is produced from protein, phosphoric acid (71.6%) and urea when these are mixed in the weight ratio of 10:8:2 and heated at 70°C for 2 hours. On the other hand, a Pastelike product is obtained by heating, the mixture at 80°C for 5 hours, which consists of protein, phosphoric acid and water in the ratio of 1:3:1. In the above mentioned processes, the protein used are such substances sa soybean-oil cake, fish-oil cake, silkworm pupa and milk casein. When these products are employed as an inhibitor for the corrosion of iron in acid solution, the protective power of the paste-like one is greater than that of the dry one. Furthermore, such inhibitor shows a characteristic of mutual enhancement when they coexist with other amine inhibitor; thiourea, urotolopine, etc. The protective power of inhibitor here is calculated from the rate of corrosion, and it is determined by measuring the amount of hydrogen gas generated during the corrosion of electorolytic iron piece immersed in the acid solution.抄録全体を表示PDF形式でダウンロード (7859K) -
尾方 昇, 井上 信子1965 年 19 巻 3 号 p. 172-177
発行日: 1965年
公開日: 2013/02/19
ジャーナル フリーPDF形式でダウンロード (12023K) -
小西 武夫1965 年 19 巻 3 号 p. 178-190
発行日: 1965年
公開日: 2013/02/19
ジャーナル フリーPDF形式でダウンロード (30474K)
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