射击场土壤铅污染环境风险的定量评估

Q3 Chemical Engineering

Chemical Speciation and Bioavailability Pub Date : 2018-01-01 DOI:10.1080/09542299.2018.1507689

Pogisego Dinake, Rosemary Kelebemang, Nicholas Sehube, Obed Kamwi, Masego Laetsang

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引用次数: 14

摘要

摘要风险评估代码（RAC）、潜在生态风险指数（PERI）、地质累积指数（Igeo）、污染因子（CF）和富集因子（EF）等风险评估指标可以很好地衡量射击场土壤中累积的铅相对于总铅浓度所带来的环境风险。因此，即使累积的铅浓度较低（685±218 mg/kg），S/P手枪射击场对环境表现出“非常高的风险”，RAC值为77，超过了51设定的“非常高风险”指导值，与RAC值为48和总铅浓度最高的MAT R2（20888±5419 mg/kg）相比，具有显著的差距。这意味着，即使铅污染程度较低，铅在S/P手枪射击场的流动性和生物利用度也会更高，对生物群构成更大的风险。应尽快实施最佳射击场管理实践和低成本补救措施，如植物修复和化学固定化，以最大限度地降低所研究射击场中铅的生物利用度和移动性。

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Quantitative assessment of environmental risk from lead pollution of shooting range soils

ABSTRACT Risk assessment indices such as risk assessment code (RAC), potential ecological risk index (PERI), geoaccumulation index (Igeo), contamination factor (CF) and enrichment factor (EF) provide a good measure of environmental risk posed by Pb accumulated in shooting range soils as opposed to total Pb concentration. For this reason, the S/P Pistol shooting range, even though accumulated lower concentration of Pb (685±218 mg/kg), exhibited ‘very high risk’ to the environment with RAC value of 77 exceeding the 51 set guideline value for ‘very high risk’ with a significant margin compared to MAT R2 (20888±5419 mg/kg) at RAC value of 48 and highest total Pb concentration. This implies that mobility and bioavailability of Pb at S/P Pistol shooting range will be higher posing a greater risk to biota even though contamination from Pb is low. Best shooting range management practices and low cost remedial actions such as phytoremediation and chemical immobilization should be carried out as soon as possible to minimize the bioavailability and mobility of Pb in the studied shooting ranges.

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来源期刊

Chemical Speciation and Bioavailability 环境科学-毒理学

CiteScore

1.62

自引率

0.00%

发文量

审稿时长

1 months

期刊介绍： Chemical Speciation & Bioavailability ( CS&B) is a scholarly, peer-reviewed forum for insights on the chemical aspects of occurrence, distribution, transport, transformation, transfer, fate, and effects of substances in the environment and biota, and their impacts on the uptake of the substances by living organisms. Substances of interests include both beneficial and toxic ones, especially nutrients, heavy metals, persistent organic pollutants, and emerging contaminants, such as engineered nanomaterials, as well as pharmaceuticals and personal-care products as pollutants. It is the aim of this Journal to develop an international community of experienced colleagues to promote the research, discussion, review, and spread of information on chemical speciation and bioavailability, which is a topic of interest to researchers in many disciplines, including environmental, chemical, biological, food, medical, toxicology, and health sciences. Key themes in the scope of the Journal include, but are not limited to, the following “6Ms”: Methods for speciation analysis and the evaluation of bioavailability, especially the development, validation, and application of novel methods and techniques. Media that sustain the processes of release, distribution, transformation, and transfer of chemical speciation; of particular interest are emerging contaminants, such as engineered nanomaterials, pharmaceuticals, and personal-care products. Mobility of substance species in environment and biota, either spatially or temporally. Matters that influence the chemical speciation and bioavailability, mainly environmentally relevant conditions. Mechanisms that govern the transport, transformation, transfer, and fate of chemical speciation in the environment, and the biouptake of substances. Models for the simulation of chemical speciation and bioavailability, and for the prediction of toxicity. Chemical Speciation & Bioavailability is a fully open access journal. This means all submitted articles will, if accepted, be available for anyone to read, anywhere, at any time. immediately on publication. There are no charges for submission to this journal.