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首页> 外文期刊>Plant and Soil >Bioaccumulation of vanadium (V), niobium (Nb) and tantalum (Ta) in diverse mangroves of the Indian Sundarbans
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Bioaccumulation of vanadium (V), niobium (Nb) and tantalum (Ta) in diverse mangroves of the Indian Sundarbans

机译:钒(v),铌(Nb)和钽(ta)在印度阳光杜马尔斯多元化的红豆杉中生物累积

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Background and aims Vanadium (V), niobium (Nb), and tantalum (Ta), recognized as Technology-Critical Element (TCE), are highly growing in demand for industrial development. Despite their economic relevance, little is known about their environmental concentrations, especially in marine ecosystems like mangroves. This paper describes concentrations and distribution patterns of Group Va elements (V, Nb and Ta) in plant organs and sediments from diverse mangroves of the Indian Sundarbans. Method Sediment cores and plant organs of eight dominant mangrove species were sampled and analyzed for V, Nb and Ta by ICP-MS. Stable carbon isotope (delta C-13) in mangrove leaves were analyzed by EA-IRMS. Result Mean concentrations (mg kg(-1)) of V, Nb and Ta decreased in the order V (84.7 +/- 12.5) > Nb (37.5 +/- 4) > Ta (3 +/- 0.8) in the sediment and V (0.6 +/- 0.6) > Nb (0.02) > Ta (0.002) in the mangrove plants. Species-specific variability in bioaccumulation factor (V: 0.012-0.035; Nb: 0.001-0.003; Ta: 0.001-0.005), translocation factor (V: 0.5-5.1; Nb: 0.26-7.06; Ta: 0.22-2.56) and enrichment factor (V: 0.008-0.027; Nb: 0.0002-0.001; Ta: 1.0 x 10(-5)-3.0 x 10(-6)) indicated different partitioning of Group Va elements within the plant organs and varying degree of mangrove uptake efficiency. Conclusion Results showed a general decrease in V, Nb and Ta concentrations with their increasing atomic weight. Their total concentrations in plants were related to the degree of enrichment of substrate sediments. The phytoextraction capacity varied amongst mangrove species depending on their CO2 uptake efficiency. Given increased demand for TCEs, results may have important implications for bioremediation processes.
机译:背景和AIMS钒(V),铌(NB)和钽(TA)被认为是技术关键因素(TCE),这对工业发展的需求高度增长。尽管他们的经济相关性,但对他们的环境浓度很少,特别是在海洋生态系统中的环境浓度。本文描述了植物器官和印度仙人掌的不同红树林中植物器官和沉积物中VA元素(V,NB和Ta)的浓度和分布模式。通过ICP-MS对方法沉积物核和八种优势红树林物种的植物器官进行取样,分析V,NB和TA。通过EA-IRMS分析了红树叶中的稳定碳同位素(Delta C-13)。结果平均浓度(Mg kg(-1))的V,Nb和Ta在沉积物中的v(84.7 +/- 12.5)> Nb(37.5 +/- 4)> Ta(3 +/- 0.8)中减少红树林植物中的v(0.6 +/- 0.6)> Nb(0.02)> Ta(0.002)。生物累积因子的物种特异性变异性(V:0.012-0.035; NB:0.001-0.003; TA:0.001-0.005),易位因子(V:0.5-5.1; NB:0.26-7.06; TA:0.22-2.56)和富集因子(V:0.008-0.027; NB:0.0002-0.001; TA:1.0×10(-5)-3.0×10(-6))表明植物器官内的VA元素和不同程度的红树林吸收效率分区。结论结果表明V,Nb和Ta浓度的一般性降低,其原子重量增加。它们在植物中的总浓度与底物沉积物的富集程度有关。根据他们的二氧化碳吸收效率,植物饲料容量在红树林种类中变化。鉴于对传统文化表现形式的需求增加,结果可能对生物修复过程具有重要意义。

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