串本温泉
Kushimoto OnsenSampled at wellhead
塩
Chloride
+ 含硫黄
Classification
Calcium-Sodium Chloride spring
A sulfur-bearing calcium-sodium chloride spring. Weakly alkaline (pH 7.8 at the wellhead, 8.9 in the lab) and lukewarm at 28 degrees C, so it is reheated before bathing. Chloride dominates the anion side at over 98 percent — a salty, heat-retaining water — and the hydrogen sulfide content (total sulfur 22.4 mg/kg) carries the unmistakable rotten-egg note of H2S.
pH
7.80
Weakly alkaline
Source temperature
28.0°C
Low temp.
Tonicity
6.05g/kg
Hypotonic
Flow rate
45L/min
Low
Free H₂S
3.60mg/kg
High
- Color
- colorless and transparent
- Taste
- bitter, faintly salty
- Odor
- hydrogen sulfide
Highlights
- Sulfur-rich
Analyzed May 6, 2021·一般社団法人 和歌山県薬剤師会 医薬品・公衆衛生検査センター·Cert no. 第E2104137号