全國重金屬高污染潛勢農地之管制及調查計畫(第3期)
| 中文摘要 | 環保署於99年委辦「全國重金屬高污染潛勢農地之管制及調查計畫」，依農地灌溉水利小組為單元，辦理系統性之重金屬高污染潛勢農地篩選與驗證；並於101年續辦「全國重金屬高污染潛勢農地之管制及調查計畫（第2期）」，持續執行污染潛勢篩選系統修訂與管制策略研擬，以掌握全國重金屬高污染潛勢農地，並結合現場調查實務及農地污染防治需求，建立農地污染調查標準化作業流程。 延續前二期計畫成果，環保署續辦第3期計畫（即本計畫）著重於具鎘污染潛勢農地之掌握與管制，優先處理鎘米造成之農糧安全問題，另評定引灌高污染潛勢圳路之農地空間分布，並依「全國農地污染管理系統」擴充進程，將農地調查輔助工具，運用於其他農地調查計畫，及新增公告農地場址的整治進度管理功能，強化行政管制與決策支援效能，務實思考技術、策略、法規及行政執行層面，逐步研擬周延而完整的整體農地污染防治策略。 本計畫農地土壤污染查證採取二階段式作業，調查標的為臺中及彰化部分轄區之8個灌溉小組，中尺度調查總計採集316組土壤樣品，其中102組篩測結果疑遭重金屬污染物介入，小尺度調查總計採集分析989組土壤樣品，計235組樣品超過土壤污染管制標準，調查結果42.4公頃超過管制標準，占總樣品數約23.8%，污染物主要為銅、鋅、鎳及鉻；依土壤調查結果辦理50組渠道底泥、22組渠道水質及28組地下水質採樣分析，底泥所有樣品之銅濃度皆超標，渠道水質1組銅濃度及地下水質1組砷濃度超過灌溉用水水質標準。 本計畫另辦理高污染潛勢圳路引灌範圍篩選，經評估機制新增辦理桃園市及彰化縣計27個灌溉小組之中尺度調查評估作業。桃園16個灌溉小組共採集633組農地土樣，其中143組篩測結果超過土壤污染管制標準；彰化11個灌溉小組共採集606組農地土樣，其中95組篩測結果超過土壤污染管制標準，調查完成後依篩測結果以克利金法推估高污染潛勢農地範圍，並檢視範圍內涵蓋地籍資料，提供辦理後續污染潛勢農地查證作業參考。 | ||
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| 中文關鍵字 | 污染潛勢篩選、高污染潛勢農地、土壤中重金屬 | ||
基本資訊
| 專案計畫編號 | EPA-103-GA12-03-A124 | 經費年度 | 103 | 計畫經費 | 32000 千元 |
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| 專案開始日期 | 2014/05/02 | 專案結束日期 | 2015/11/01 | 專案主持人 | 陳慎德 |
| 主辦單位 | 土污基管會 | 承辦人 | 謝菊蕙 | 執行單位 | 瑞昶科技股份有限公司 |
成果下載
| 類型 | 檔名 | 檔案大小 | 說明 |
|---|---|---|---|
| 期末報告 | 11.EPA -103-GA12-03-A124-期末報告.pdf | 58MB |
Nationalwide Control and Investigation Program of Heavy Metal Polluted Agricultural Land.(3)
| 英文摘要 | The “Control and Investigation Project for National Agricultural Land with High Potential of Heavy Metal” (abbreviated as Control and Investigation Project) commissioned by the Taiwan EPA in 2010 conducted a systematic assessment and investigation of agricultural lands with a high potential for heavy metal pollution, with irrigation areas as the unit of examination. In 2012, the 2nd Control and Investigation Project continuously revised the assessment system and developed control strategies for identifying agricultural lands with a high potential heavy metal pollution throughout the country. It combined actual survey practices with the need for pollution prevention, establishing standard operation processes for the investigation of pollution on agricultural lands. Based on the results of these two projects, the Taiwan EPA implemented the 3rd Control and Investigation Project which emphasized the regulation of agricultural lands with a high potential for cadmium (Cd) contamination and prioritized the food safety problem caused by rice with high Cd content. In addition, it evaluated national agricultural lands irrigated from canals with a high potential for pollution. In order to improve administrative management and increase the efficiency of the decision making, and update in accordance with the “National farmland pollution management system,” it used farmland survey tools on other projects and added the function of managing contaminated agricultural lands. Consequently, it took technology, policies, regulations, and administration into consideration, and outlined a complete and exhaustive strategy for the prevention of pollution of agricultural lands. The investigation of contaminants in agricultural lands was implemented in two phases. In the eight irrigation areas in Changhua and Taichung, heavy metal could exist in 102 out of 316 soil samples in the 1st phase. In the 2nd phase, 989 soil samples were collected in total and 235 soil samples exhibited exceedance of the soil contaminant regulatory standards (23.8% of samples were polluted, representing 42.4 hectares). The contaminants identified were copper (Cu), zinc (Zn), nickel (Ni), and chromium (Cr). 50 sediment samples, 22 water samples of irrigation ditches, and 28 groundwater samples were collected. According to results of the surveys mentioned above, the Cu concentration of 50 sediment samples and one irrigation ditch water sample and the arsenic (As) concentration of one groundwater sample exceeded the regulatory standards. In addition, the project undertook an investigation of twenty-seven agricultural land irrigation areas in Taoyuan and Changhua. These parcels were irrigated by canals with a high potential for pollution. In the 1st phase, heavy metal could exist in 143 out of 633 samples in Taoyuan and 95 out of 606 samples in Changhua. Based on the 1st phase investigation results, the scope of agricultural lands with a high potential for heavy metal pollution was predicted using the Kriging-method. A cadastre of polluted agricultural lands was used as a reference for undertaking the investigation. | ||
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| 英文關鍵字 | Pollution screening process, High potential pollution agricultural land, Heavy metals of soil | ||