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題 名 | 屏東地區雨水化學特性探討=Study of Chemical Characteristics of Rainfall Samples in Pingtung |
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作 者 | 許美芳; 羅英瑛; 陳庭堅; | 書刊名 | 大仁學報 |
卷 期 | 17 1999.05[民88.05] |
頁 次 | 頁101-114 |
分類號 | 328.633 |
關鍵詞 | 酸雨; Gran滴定; 自由酸; 弱酸; 陰離子; 陽離子; Acid rain; Gran titration; Free acidity; Weak acidity; Cation anion; |
語 文 | 中文(Chinese) |
中文摘要 | 酸雨是全球共同的環境問題,酸性雨水含有強度與容量特性。本研究的目的是探討屏東地區17 個雨水樣品主要離子的特性(84年5月至85年5月),並使用Gran Plot檢驗兩個樣品的酸性特性(85年8月)。結果顯示離子濃度的變異很大,而陰、陽離子濃度個別總和介於50 ∼450 ueq/L。酸性雨水中NH���尿@度偏高,反應屏東為農業縣之背景。17個樣品之PH介於4.29至6.80中間值為5.96,PH值低於5.65有35%。[H�吞與[SO�荼滋涘、[NO�婀涘之相關性分別為0.86、0.81,與一個酸性雨水樣品(PH4.46)計算的[H]為34.7 接近Gran Plot 外插值38.9 eq/L,顯示高酸性雨水其自由酸來自強酸H�特O�瓷BHNO�陘孛捔驉C兩個雨水樣品Gran Plot顯示低PH的雨水比高PH的雨水含有較高的酸性,尤其是弱酸。 |
英文摘要 | Acid rain is a universal environmental problem and the characteristics of the acidity include intensity and capacity. The purposes of this study were to investigate the characteristics of major ion for 17 rainfall samples (May, 1995 to May, 1996) and to examine the acidity of two rainfall samples (August, 1996) with Gran Plot in Pingtung area. The results showed that variation of the most ions was remarkably high and the sum of both cation and anion were individually between 50 and 450 ueq/L, In most of the samles NH���� concentrations were higher than other cations, especially in acid samples, that indicated the agricultural environment of Pingtung country. The PH range of 17 rainfall samples was between 4.29 and 6.80 and thirty-five percentages of the samples were below 5.65. The high correlation of [H�吞 with [SO�荼滋涘 and [NO�婀涘were 0.86 and 0.81, respectively in 17 samples. Also in the acid sample, PH4.6, the computation [H�吞 34.7ueq/L closed to the extrapolating point of Gran Plot 38.9 ueq/L that indicated the free acidity was dissociated from H�特O�� and HNO�� in acid rainfal samples. The Gran Plots of the two rainfall samples indicated the lower PH higher acidity than the higher one, especially weak acidity. |
本系統中英文摘要資訊取自各篇刊載內容。