頁籤選單縮合
題 名 | 磚窯廠周邊香蕉及檳榔氟化物累積及葉部傷害=Fluoride Accumulation and Leaf Injury of Banana and Betel Nut near a Brickyard |
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作 者 | 徐慈鴻; 李貽華; 蔣慕琰; | 書刊名 | 中國農業化學會誌 |
卷 期 | 37:4 1999.12[民88.12] |
頁 次 | 頁489-497 |
分類號 | 433.6 |
關鍵詞 | 空氣污染; 氟化物; 季節變化; 作物受害; 土壤可溶性氟化物; Air pollution; Fluorides; Seasonal variation; Crop injury; Soil soluble fluoride; |
語 文 | 中文(Chinese) |
中文摘要 | 氟化物污染主要來自使用黏土礦物為製品原料之產業。空氣中氟化物易累積於植物葉部導致葉片傷害。本研究針對磚窯廠周邊之植物進行調查及分析,探討植體中氟之累積與受害。以磚窯廠為中心設置七處採樣點,於1993年10月至次年12月期間每個月採香蕉及檳榔葉片,並利用氟離子選擇性電極進行氟含量分析。鄰近磚廠採點之香蕉及檳榔葉片呈現葉尖及葉緣黃化枯褐等典型氟化物傷害黴狀;香蕉葉片枯褐部份佔葉面積比例越高者,氟化物含量越高,新葉之氟含量低於完全展開之老葉者。磚廠周邊七個採樣點香蕉及檳榔葉片之平均氟含量為50.1mg/kg及119.9mg/kg,非污染區者為11.2mg/kg及 20.9mg/kg,平均氟含量差距達四倍以上。植體氟含量與至磚窯廠之遠近有明顯關係,西北方向NW2、NW3及NW4等三處採點檳榔葉片之氟含量分別為磚廠邊PS採點之71%、56%及17%,葉片之含氟量隨與磚窯廠距離增大而降低。1994年全年葉部氟含量資料顯示,5-9月香蕉之月平均為年平均之0.3至0.6倍,而檳榔者為0.4至0.7倍。調查區域各採點土壤氟含量在0.69至4.13mg/kg間,並未較非污染區之土壤高,且和距離污染源之遠近無相關性,土壤氟含量與葉片氟含量無明顯關係。 |
英文摘要 | Air-borne fluorides readily accumulate in plant tissues and are highly phytotoxic to susceptible species. In Taiwan, factories producing bricks, pottery, ceramics, and glassware are major pollution sources often associated with fluoride-related crop injury. We investigated the fluoride accumulation in leaves of banana and betel nut near a brickyard over a 14-month period starting from October, 1993. Periodic sampling was performed at 7 sites within a 4-km distance from the brickyard and at a non-polluted area 20 km away. The mean leaf fluoride content in leaves of banana and betel nut at the 7 sites around the brickyard was 50.1 and 119.9mg/kg dry weight, respectively. These figures were more than 4 times higher than those of the samples collected from the non-polluted area, 11.2 mg/kg for banana and 20.9 mg/kg for betel nut. Plants taken at sampling sites more distant from the brickyard accumulated less fluoride than did plants close to the pollution source. The mean leaf fluoride content in betel nut from the 3 sampling sites furthest away from the brickyard was 71, 56 and 17%, respectively, that of plants sampled near the brickyard. The data also indicated a distinct seasonal variation of leaf fluoride content. Samples collected between May and September had lower levels of fluoride than did those collected during the remaining months. The fluoride content in leaves of banana and betel nut collected between May and September was 0.3-0.6 and 0.4-0.7 fold, respectively, of the yearly mean fluoride content. The soil fluoride content ranged from 0.69 to 4.13 mg/kg and was not related to the leaf fluoride content of the plants sampled. |
本系統中英文摘要資訊取自各篇刊載內容。