JaLCDOI 10.18926/21180
Title Alternative Determination of boron in thermal waters by emission spectrophotometry using "Spectraspan"
FullText URL pitsr_048_035_041.pdf
Author Mifune, Masaaki| Aoki, Hiroko| Tetsumoto, Junko| Furuno, Katsushi| Morinaga, Hiroshi|
Abstract A plasma emission spectrophotometer "Spectraspan" (low power d. c. plasma arc, operating on argon) was evaluated for boron determination in thermal waters. The influence of acids (hydrochloric, nitric and sulfuric acids) and several metallic ions (Na(+). K(+), Mg(2+). Ca(2+)) on emission intensity was studied. There was a linear relationship between emission intensity and boron content from 0 to 500 mg/l. Boron in thermal waters was easily determined by standard addition method. Precision. coefficient of variance and recoveries of known amount of boron added to the sample for 11 repricate analyses were 0.12μg/ml, 2.02%, 95.0-101.7%, respectively. Boron content of 27 thermal waters in the Sanin district was determined. and the highest B content in the sample waters were 8.8 mg/l (Tottori spa) in Tottori Prefecture and 14.6-25.0 mg/l (the thermal springs at the foot of Mt. Sanbe. a non-active quaternary volcano) in Shimane Prefecture. The relationships between B content and water temperature, B content and pH value were not recognized. Significantly positive correlationship was observed between Band Li contents.
Publication Title 岡山大学温泉研究所報告
Published Date 1979-03-25
Volume volume48
Start Page 35
End Page 41
ISSN 0369-7142
language 日本語
File Version publisher
NAID 120002311017
JaLCDOI 10.18926/21179
Title Alternative Studies on sinter deposit Misasa radioactive hot springs
FullText URL pitsr_048_025_033.pdf
Author Furuno, Katsushi| Tetsumoto, Junko| Aoki, Hiroko| Mifune, Masaaki| Morinaga, Hiroshi| Fukushima, Satoru| Wada, Hiroaki|
Abstract Sinter deposit in a distributing pipe used for about fifteen years in Misasa radioactive hot springs was investigated. The results were as follows; 1. The metal elements in this deposit were quaIi. tatively analysed by spectraspan plasma emission spectrophotometry (SPES), by fluorescent X-ray spectrometry, and following elements were detected; B, Na, Mg, AI, K, Ca, Mn, Fe, Cu, Zn, As, Sr, Ba and Pb. 2. The metal elements in this deposit were quantatively analysed by SPES and atomic absorption spectrophotometry, and following elements were determined; Fe : 508.7, As: 26.40, Ca: 7.85, Mn : 2.00, Al : 1.80, Na: 1.60, Zn: 1.33, K: 0.80, Cu: 0.67, Sr: 0.47, Mg: 0.35, Ba: 0.33 and B : 0.30 mg per gram. The color of this deposit was red brown, and the main component was ferric oxide. 3. Radioactive elements in this deposit were detected by autoradiography and radioluxography. Among the radioactive elements, concentration of radium was 320.5×10(-12)g/g (313.0×10(-12)Ci/g).
Publication Title 岡山大学温泉研究所報告
Published Date 1979-03-25
Volume volume48
Start Page 25
End Page 33
ISSN 0369-7142
language 日本語
File Version publisher
NAID 120002310949