Arsenic, antimony and mercury chemical forms and behavior in volcanic emissions

火山排放中砷、锑和汞的化学形态和行为

• 批准号: 13640490
• 负责人: SAKAMOTO Hayao
• 金额: $ 2.24万
• 依托单位: Kagoshima University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13640490/
• 关键词: Mercury; Arsenic; Antimony; Fumarolic gases; Environmental samples; 噴気孔ガス凝縮水; 火山ガス凝縮水; ヒ素・アンチモン; 火山発散物; 凝縮水; 非凝縮ガス

21 fumarolic gases which temperature differed from Satsuma Iwojima Volcano were collected. The mercury concentration in the condensed water is 120〜135,000 ng/l. There was high positive correlation between mercury and chloride ions concentration. This fact indicates the possibility in which the mercury in the fumarolic gas is discharged in the form of chloride. However, the possibility of the emission in the form of the chloride was denied that mercury chemical form in fumarolic gas from the calculation of chemical equilibrium using thermodynamic data. However, mercury emission root is not simple, because there is no correlation between fumarolic temperature and mercury concentration. The result which the mercury existed in the reductive fumarolic gas in the form of metallic mercury vapor, as the temperature is high, was obtained. And, the speciation analysis method of geothermal water mainly on South Kyushu and surface water around the mine and arsenic in the groundwater, antimony were examined in detail, and the analysis method was established. As the result, arsenic, antimony reflect the geologic feature of the region. And, it was proven that the chemical form of the low oxidation condition was leading for arsenic, antimony in reductive atmosphere such as the underground.

从岩岛温泉采集到21种不同温度的挥发性气体。冷凝水中汞浓度为120~135,000 ng/L，与氯离子浓度呈高度正相关。这一事实表明，富马酸气体中的汞以氯化物的形式排放的可能性。然而，根据热力学数据计算化学平衡，否认了汞在富马酸气体中以氯化物形式排放的可能性。然而，汞释放根并不是简单的，因为大气温度和汞浓度之间没有相关性。得出了温度较高时，还原气中汞以金属汞蒸气的形式存在的结果。详细研究了南九州地热水和矿区周边地表水的形态分析方法以及地下水中砷、锑的形态分析方法，建立了分析方法。因此，砷、锑反映了该地区的地质特征。并证明了在地下等还原气氛中，低氧化条件的化学形态是砷、锑的主导。

项目成果

T.Tomiyasu, M.Okada, R.Imura, H.Sakamoto: "Vertical variations in the concentration of Mercury in soils around Sakurajima Volcano, Southern Kyushu, Japan"Sci.Total Environment. 304. 221-230 (2003)

T.Tomiyasu、M.Okada、R.Imura、H.Sakamoto：“日本九州南部樱岛火山周围土壤中汞浓度的垂直变化”Sci.Total Environmental。

藤田俊一, 坂元 隼雄: "霧島火山硫黄谷・林田周辺地区熱水系の形成機構の地球化学的研究"温泉科学. 52,1. 20-28 (2002)

藤田俊一、坂本隼雄：“雾岛火山硫磺谷和林田周围热液系统形成机制的地球化学研究”，《温泉科学》52，1（2002）。

Hayao Sakamoto, Shun-ichi, Fujita, Takashi Tomiyasu, Katsuro Anazawa: "Mercuy concentration in fumarolic gas condensates and mercury chemical forms in fumarolic gases"Bull. Volcanol. Soc. Japan. 48, No1. (2003)

Hayao Sakamoto、Shun-ichi、Fujita、Takashi Tomiyasu、Katsuro Anazawa：“延胡索气体冷凝物中的汞浓度和延胡索气体中的汞化学形态”公牛。

H.Sakamoto, S.Fujita, T.Tomiyasu, K.Anazawa: "Mercury concentration in fumarolic gas condensates and mercury Chemical forms in fumarolic gases"Bull.Volcanol.Japan. 48,1. 27-33 (2003)

H.Sakamoto、S.Fujita、T.Tomiyasu、K.Anazawa：“富马罗气体冷凝物中的汞浓度和富马罗气体中汞的化学形式”Bull.Volcanol.Japan。

K.Anazawa, Y.Kaida, Y.Shinomura, T.Tomiyasu, H.Sakamoto: "Heavy-metal distribution in river waters and sediments around a "firefly Village", Shikoku, Japan : Application of multivariate analysis."Anal.Sciences. 20. 79-84 (2004)

K.Anazawa、Y.Kaida、Y.Shinomura、T.Tomiyasu、H.Sakamoto：“日本四国“萤火虫村”周围河水和沉积物中的重金属分布：多元分析的应用。”Anal.Sciences