Accumulation and distribution of cadmium at organic-mineral micro-interfaces across soil aggregates
Soil amendments are crucial in regulating cadmium (Cd) distribution as aggregates of varying sizes have different capacities to retain soil Cd. Directly observing the Cd distribution within aggregates and understanding their interactions with minerals and carbon at the submicron scale remain signifi...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Ecotoxicology and Environmental Safety |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651324015331 |
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| author | Qi Li Linfeng Li Bohao Yin Xiaoyang Lin Anwen Xiao Weijie Xue Hengjie Liu Yichun Li |
| author_facet | Qi Li Linfeng Li Bohao Yin Xiaoyang Lin Anwen Xiao Weijie Xue Hengjie Liu Yichun Li |
| author_sort | Qi Li |
| collection | DOAJ |
| description | Soil amendments are crucial in regulating cadmium (Cd) distribution as aggregates of varying sizes have different capacities to retain soil Cd. Directly observing the Cd distribution within aggregates and understanding their interactions with minerals and carbon at the submicron scale remain significant challenges. Pot experiments were conducted to assess the impacts of mineral, organic, and microbial amendments on the Cd distribution in soil aggregates using synchrotron radiation-based Fourier transform infrared (SR-FTIR) spectroscopy and nano-scale secondary ion mass spectrometry (NanoSIMS). Our results revealed that different soil amendments exerted varying effects on Cd accumulation in soil aggregates. The mineral and microbial amendments facilitated the Cd transfer from the macroaggregates to the silt+clay fraction, while the organic amendment increased the Cd loading in the macroaggregates. Additionally, the mineral and microbial amendments reduced the binding of Fe oxides with microbial-derived peptides in the macroaggregates and enhanced the interaction of Fe oxides with plant-derived lignin in the silt+clay fractions. Furthermore, NanoSIMS analysis provided direct evidence that the mineral and microbial amendments decreased the association between Cd with carbon and minerals in the macroaggregates, while they enhanced the binding of Cd and Fe oxides in the silt+clay fractions. Collectively, our findings revealed that the mineral and microbial amendments promoted Cd transfer, enhancing the stability of Cd in the finer soil fractions and offering essential insights for developing agricultural management strategies to alleviate Cd contamination in paddy soils. |
| format | Article |
| id | doaj-art-62dd23178ae042659dad29340a12c35c |
| institution | Kabale University |
| issn | 0147-6513 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj-art-62dd23178ae042659dad29340a12c35c2025-01-23T05:25:38ZengElsevierEcotoxicology and Environmental Safety0147-65132025-01-01289117457Accumulation and distribution of cadmium at organic-mineral micro-interfaces across soil aggregatesQi Li0Linfeng Li1Bohao Yin2Xiaoyang Lin3Anwen Xiao4Weijie Xue5Hengjie Liu6Yichun Li7Institute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Key Laboratory of Plant Nutrition and Fertilizer in South Region, Ministry of Agriculture and Rural Affairs, Guangzhou 510640, ChinaInstitute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Key Laboratory of Plant Nutrition and Fertilizer in South Region, Ministry of Agriculture and Rural Affairs, Guangzhou 510640, ChinaSchool of Earth System Science, Tianjin University, Tianjin 300072, ChinaInstitute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Key Laboratory of Plant Nutrition and Fertilizer in South Region, Ministry of Agriculture and Rural Affairs, Guangzhou 510640, ChinaInstitute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Key Laboratory of Plant Nutrition and Fertilizer in South Region, Ministry of Agriculture and Rural Affairs, Guangzhou 510640, ChinaKey Laboratory of Original Agro-Environmental Pollution Prevention and Control, Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, ChinaNational Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, ChinaInstitute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Key Laboratory of Plant Nutrition and Fertilizer in South Region, Ministry of Agriculture and Rural Affairs, Guangzhou 510640, China; Correspondence to: Institute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.Soil amendments are crucial in regulating cadmium (Cd) distribution as aggregates of varying sizes have different capacities to retain soil Cd. Directly observing the Cd distribution within aggregates and understanding their interactions with minerals and carbon at the submicron scale remain significant challenges. Pot experiments were conducted to assess the impacts of mineral, organic, and microbial amendments on the Cd distribution in soil aggregates using synchrotron radiation-based Fourier transform infrared (SR-FTIR) spectroscopy and nano-scale secondary ion mass spectrometry (NanoSIMS). Our results revealed that different soil amendments exerted varying effects on Cd accumulation in soil aggregates. The mineral and microbial amendments facilitated the Cd transfer from the macroaggregates to the silt+clay fraction, while the organic amendment increased the Cd loading in the macroaggregates. Additionally, the mineral and microbial amendments reduced the binding of Fe oxides with microbial-derived peptides in the macroaggregates and enhanced the interaction of Fe oxides with plant-derived lignin in the silt+clay fractions. Furthermore, NanoSIMS analysis provided direct evidence that the mineral and microbial amendments decreased the association between Cd with carbon and minerals in the macroaggregates, while they enhanced the binding of Cd and Fe oxides in the silt+clay fractions. Collectively, our findings revealed that the mineral and microbial amendments promoted Cd transfer, enhancing the stability of Cd in the finer soil fractions and offering essential insights for developing agricultural management strategies to alleviate Cd contamination in paddy soils.http://www.sciencedirect.com/science/article/pii/S0147651324015331Soil amendmentCd distributionOrganic componentsFe oxidesAggregatesNanoSIMS |
| spellingShingle | Qi Li Linfeng Li Bohao Yin Xiaoyang Lin Anwen Xiao Weijie Xue Hengjie Liu Yichun Li Accumulation and distribution of cadmium at organic-mineral micro-interfaces across soil aggregates Ecotoxicology and Environmental Safety Soil amendment Cd distribution Organic components Fe oxides Aggregates NanoSIMS |
| title | Accumulation and distribution of cadmium at organic-mineral micro-interfaces across soil aggregates |
| title_full | Accumulation and distribution of cadmium at organic-mineral micro-interfaces across soil aggregates |
| title_fullStr | Accumulation and distribution of cadmium at organic-mineral micro-interfaces across soil aggregates |
| title_full_unstemmed | Accumulation and distribution of cadmium at organic-mineral micro-interfaces across soil aggregates |
| title_short | Accumulation and distribution of cadmium at organic-mineral micro-interfaces across soil aggregates |
| title_sort | accumulation and distribution of cadmium at organic mineral micro interfaces across soil aggregates |
| topic | Soil amendment Cd distribution Organic components Fe oxides Aggregates NanoSIMS |
| url | http://www.sciencedirect.com/science/article/pii/S0147651324015331 |
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