Identifying the functional groups and the influence of synthetic chelators on Cd availability and microbial biomass carbon in Cd-contaminated soil
| Autor: | Hu Hongqing, Muhammad Shaaban, Kashif Ali Kubar, Muhammad Afzal Chhajro, Muhammad Rizwan, Saqib Bashir, Zhu Jun, G. M. Jamro, Abdus Salam, Qingling Fu |
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| Rok vydání: | 2017 |
| Předmět: |
inorganic chemicals
Ethylenediaminetetraacetic acid Plant Science 010501 environmental sciences complex mixtures 01 natural sciences Citric Acid chemistry.chemical_compound Metals Heavy Dissolved organic carbon Environmental Chemistry Soil Pollutants Chelation Biomass Agricultural crops Edetic Acid Soil Microbiology 0105 earth and related environmental sciences Chelating Agents Metal solubility Chemistry Ricinus food and beverages 04 agricultural and veterinary sciences Plants Pollution Soil contamination Biomass carbon Carbon Bioavailability Biodegradation Environmental Environmental chemistry 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Cadmium |
| Zdroj: | International journal of phytoremediation. 20(2) |
| ISSN: | 1549-7879 |
| Popis: | Synthetic chelators play an important role in boosting the microbial biomass carbon (MBC), dissolved organic carbon (DOC), and heavy metal solubility in a contaminated soil toward a sustainability of environment for agricultural crops. Castor plant was grown under different levels of Cd contaminated soil (−Cd and +Cd) following adding three chelating agents, ethylenediaminetetraacetic acid (H4EDTA), nitriloacetic acid (H3 NTA), and NH4 citrate (ammonium citrate) to the soil at rates of 10, 15, and 25 mmol in 5 kg of soil per pot. The highest bioavailable Cd concentrations in soil and castor plant were obtained from NH4 citrate and H4EDTA treatments in the contaminated soil. Fourier transform infrared (FTIR) analysis showed that NH4 citrate was the most effective chelator in Cd-contaminated soil. MBC and DOC contents were significantly increased and reached at 81.98–80.37 and 1.96–1.90 mg kg−1 respectively, in the (H3 NTA) and NH4 citrate treatments in Cd-contaminated soil. Further research is need... |
| Databáze: | OpenAIRE |
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