Analysis of Ammonia Toxicity in Landfill Leachates

機(jī)譯：垃圾滲濾液中氨的毒性分析

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Toxicity identification evaluation (TIE) phase I manipulations and toxicity test with D. magna were conducted on leachates from an industrial waste landfill site in Japan. Physicochemical analysis detected heavy metals at concentrations insufficient to account for the observed acute toxicity. The graduated pH and aeration manipulations identified the prominent toxicity of ammonia. Based on joint toxicity with additive effects of unionized ammonia and ammonium ions, the unionized ammonia toxicity (LC50,NH3(aq)) was calculated as 3.3 ppm, and the toxicity of ammonium ions (LC50,NH4⁺) was calculated as 222 ppm. Then, the contribution of ammonia toxicity in the landfill leachate toxicity was calculated as 58.7 vol% of the total toxicity in the landfill leachate. Other specific toxicants masked by ammonia's toxicity were detected. Contribution rate of the toxicants other than by ammonia was 41.3 vol% of the total toxicity of the landfill leachate.

機(jī)譯：對(duì)日本工業(yè)垃圾填埋場(chǎng)的滲濾液進(jìn)行了D. magna毒性鑒定評(píng)估（TIE）第一階段操作和毒性測(cè)試。理化分析檢測(cè)到重金屬的濃度不足以解決所觀察到的急性毒性。 pH和曝氣操作的分級(jí)確定了氨的顯著毒性。根據(jù)聯(lián)合毒性和聯(lián)合的氨和銨離子的加和作用，計(jì)算得出聯(lián)合的氨的毒性（LC50，NH3（aq））為3.3 ppm，銨離子的毒性（LC50，NH4 ^{+ ）計(jì)算為222 ppm。然后，氨的毒性在垃圾滲濾液中的貢獻(xiàn)被計(jì)算為垃圾滲濾液中總毒性的58.7 vol％。還檢測(cè)到其他被氨的毒性掩蓋的特定毒物。除氨氣外，其他有毒物質(zhì)的貢獻(xiàn)率為垃圾滲濾液總毒性的41.3％vol％。}

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期刊名稱 ISRN Toxicology
作者
Takuya Osada; Keisuke Nemoto; Hiroki Nakanishi; Ayumi Hatano; Ryo Shoji; Tomohiro Naruoka; Masato Yamada;
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作者單位

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年(卷),期 2011(2011),-1
年度 2011
頁(yè)碼 954626
總頁(yè)數(shù) 6
原文格式 PDF
正文語(yǔ)種
中圖分類毒物學(xué)（毒理學(xué)）;
關(guān)鍵詞

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8. Toxicity of Leachates: Comparison of Extraction Procedure Extracts and Landfill Leachates [R] . Brown, D. K., Francis, C. W., Maskarinec, M. P., 1981

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Analysis of Ammonia Toxicity in Landfill Leachates

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