Evaluation of the toxicity of two soils from Jales Mine (Portugal) using aquatic bioassays
Evaluation of the toxicity of two soils from Jales Mine (Portugal) using aquatic bioassays
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DOI：
10.1016/j.chemosphere.2005.02.070
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发表时间：
2005-10-01
期刊：
影响因子：
8.8
通讯作者：
Nogueira, AJA
中科院分区：
文献类型：
--
作者：
Loureiro, S;Ferreira, ALG;Nogueira, AJA
土壤污染可能是河流和地下水污染的一个途径。作为化学分析和总污染物测定的补充，生物测定可以提供有关化学化合物的生物可利用部分的信息，重点是土壤的保留和生境功能。在这项研究中，评价两种土壤的毒性从废弃的贾莱斯矿（葡萄牙）认为这两种功能。土壤的缓冲能力进行了测试与生物测定，使用枝水蚤大型和海洋细菌费氏弧菌。利用跳虫Folsomia candida的繁殖生物测定法对土壤的生境功能进行了评价。以土壤为试验介质，对费氏弧菌进行了Microtox固相试验，提取土壤洗脱液进行了Microtox基础试验，并对D. magna.海洋细菌对低重金属含量的土壤（JNC土壤）和JNC土壤淋洗液表现出较高的敏感性，而对高重金属含量的土壤（JC土壤）和土壤淋洗液的暴露没有引起任何毒性效应。在D.大型，生物体表现出敏感性JNC和JC土壤洗脱液。动员和生殖功能都受到抑制。用假丝酵母菌进行的生物测定未反映出污染物对其繁殖的任何影响。虽然JNC土壤呈现较低的重金属含量，淋洗液表现出不同的污染模式相比，JC土壤和淋洗液，这表明不同的保留和缓冲能力之间的土壤。在这项研究中获得的结果强调了敏感性和重要性的土壤淋洗液生物测定与水生生物在土壤ERA过程中的评价策略。(C)2005爱思唯尔有限公司保留所有权利。
Soil contamination can be one path for streams and groundwater contamination. As a complement of chemical analysis and total contaminants determination, bioassays can provide information on the bioavailable fraction of chemical compounds, focusing on the retention and habitat function of soils. In this study the evaluation of the toxicity of two soils from the abandoned Jales Mine (Portugal) regarded both functions. The buffer capacity of soils was tested with bioassays carried out using the cladoceran Daphnia magna and the marine bacteria Vibrio fischeri. The habitat function of soils was evaluated with the reproduction bioassay with the collembolan Folsomia candida. The Microtox solid-phase test was performed with V fischeri using soil as test medium, and soil elutriates were extracted to perform the Microtox basic test, and an immobilization and reproduction bioassay with D. magna. The marine bacteria showed high sensitivity to the soil with low heavy metal content (JNC soil) and to JNC soil elutriates, while the soil with highest heavy metal content (JC soil) or soil elutriates exposure did not cause any toxic effect. In the bioassays with D. magna, organisms showed sensitivity to JNC and also to JC soil elutriates. Both mobilization and reproduction features were inhibited. The bioassay with F candida did not reflect any influence of the contaminants on their reproduction. Although JNC soil presented lower heavy metal contents, elutriates showed different patterns of contamination when compared to JC soil and elutriates, which indicates different retention and buffer capacities between soils. Results obtained in this study underlined the sensitivity and importance of soil elutriate bioassays with aquatic organisms in the evaluation strategy in soil ERA processes. (C) 2005 Elsevier Ltd. All rights reserved.