Acid rain in the kilauea Volcano area (Hawaii)
Acid rain in the kilauea Volcano area (Hawaii)
复制标题
基拉韦厄火山地区酸雨（夏威夷）
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
Doris Priestley
中科院分区：
文献类型：
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作者：
Marlene Nachbar;B. Siegel;Christa Russell;S. Siegel;Mei Li Siy;Doris Priestley
在夏威夷火山国家公园及其周围地区，酸雨是常见的，那里有数千公顷丰富多样的热带森林。降雨量与pH值之间是否存在强有力的关系，或pH值低于约4时酸度与硫酸盐含量之间是否存在强有力的相关性，尚未得到证实。硫酸盐和pH值之间的差异提出了严重的问题，即来自基拉韦厄的SO2是当地酸度的主要来源。1985-1986年的样品在20°C下相对不稳定，再次对H2SO 4作为唯一或主要的质子供体产生了怀疑。在pH 2下用松萝（一种对污染敏感的地衣）进行的模型实验表明，与质子相关的阴离子是重要的，但在pH 3下，暴露在H2SO 4和HCl中长达16小时不会损害光合作用对CO2的吸收。我们不认为酸雨是一种生态危害，也不认为SO2是酸性的主要来源，而是表明存在其他解释和替代方案，需要更多的实验和分析。
Acid precipitation is present and commonplace in and around Hawaii Volcanoes National Park, where thousands of hectares of rich and diverse tropical forest flourish. The existence of a strong relationship between rain volume and pH or of a strong correlation between acidity and sulfate content below a pH of approximately 4 has not been confirmed. The discrepancy between sulfate and pH raises serious questions about SO2 from Kilauea as the major source of local acidity. The 1985–1986 samples were relatively unstable at 20°C, again casting doubt on H2SO4 as the sole or major proton donor.Model experiments down to pH 2 withUsnea, a pollution-sensitive lichen, show that the anion associated with the protons is important, but that down to and including pH 3, exposure of up to 16 hr to H2SO4 and HCl does not impair photosynthetic CO2 uptake.We do not dismiss acid rain as an ecological hazard nor do we minimize the role of SO2 as a primary source of acidity, but rather demonstrate that other interpretations and alternatives exist and require more experimentation and analysis.