岩溶流域周围土壤中铬和镍的自然富集

Ratna Dwi Puji Astuti, A. Mallongi, Annisa Utami Rauf
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引用次数: 8

摘要

背景和目标:作为一个公众关注的问题,需要在全球范围内监测和控制有毒金属污染。由于有毒金属具有生物放大和生物累积的能力,它们会对生态和人类健康造成一些不利影响。该研究旨在评估Pangkajene流域周围的铬和镍富集水平,并估计土壤的生态风险。方法:采用火焰原子吸收分光光度计测定铬和镍的总浓度。本研究采用污染因子、地质累积指数和污染负荷指数来评价土壤富集状况。生态危害指数用于估计污染可能产生的潜在危害。结果:铬和镍的平均浓度分别为92.9和43.18 mg/kg。铬浓度超过了保护环境和人类健康的土壤质量标准,而镍仍低于标准。地质累积指数值表明土壤中没有人为污染。碳酸盐岩的风化作用是庞克普县铬和镍的主要富集因素。污染因子和污染负荷指标值表明研究土壤污染程度较低。然而,所有研究地点都超过了生态危害指数值(生态危害指数>1),这表明Pangkajene流域存在相当大的生态风险。结论:这些发现可能为庞克普县提供与土壤中铬和镍富集有关的基线信息。庞克普市政府必须强调加强环境标准和监测机制的重要性,将其作为维护健康环境的首要任务。
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Natural enrichment of chromium and nickel in the soil surrounds the karst watershed
BACKGROUND AND OBJECTIVES: As a public concern, monitoring and controlling toxic metals pollution is needed worldwide. Due to the ability of poisonous metals in biomagnification and bioaccumulation, they can cause several adverse impacts on ecological and human health. The study aims to assess chromium and nickel enrichment levels and estimate the soil''s ecological risk surrounds the Pangkajene watershed. METHODS: The total concentrations of chromium and nickel were determined using the Flame Atomic Absorption Spectrophotometer. This study used contamination factor, geo-accumulation index, and pollution load index to evaluate soil enrichment status. The ecological hazard index is used to estimate the potential hazard that may occur due to contamination.  FINDINGS: The mean concentrations of chromium and nickel were 92.9 and 43.18 mg/kg, respectively. Chromium concentration exceeded the soil quality guideline for the protection of environment and human health, while Ni still below the standards. The geo-accumulation index value indicated no human-made-derived contamination in the soil. Weathering of carbonate rocks is the chromium and nickel major enrichment factor in the Pangkep regency. Contamination factor and pollution load index values showed low pollution in the studied soil. However, all study sites exceeded the ecological hazard index value (Ecological hazard index>1), which indicates a considerable ecological risk in the Pangkajene watershed area.  CONCLUSION: These findings may provide baseline information related to chromium and nickel enrichment in the soil for Pangkep regency municipality. The Pangkep regency municipality must highlight the importance of strengthening environmental standards and monitoring mechanism as the priority to maintain a healthy environment.
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来源期刊
CiteScore
7.90
自引率
2.90%
发文量
11
审稿时长
8 weeks
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