1. Evaluation of Cd and Pb concentrations in soil-mulberry-silkworm system of a tailings pond, China.
- Author
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Jiang, Yongbing, Jiang, Shimeng, Huang, Renzhi, Li, Zhangbao, Liu, Liuxia, and Long, Tangzhong
- Subjects
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LEAD , *TECHNICAL specifications , *SILKWORMS , *FECES , *PONDS - Abstract
The ecological reconstruction and safe utilisation of a large number of tailings ponds are very important. In this study, the accumulation and transportation of cadmium (Cd) and lead (Pb) in the soil-mulberry-silkworm system was evaluated through the mulberry planting and silkworm rearing at a tailings pond in Huayuan County, China. The results revealed that both the bioconcentration factors (BCFs) of mulberry for Cd and Pb were less than 1. The highest translocation factors (TFs) for both Cd and Pb were appeared in the stage from silkworm to excrement, followed by mulberry stem to leaf. The peak concentrations of Cd and Pb in the silkworm excrement were 2.33 mg kg−1 and 6.46 mg kg−1, respectively. Though the Cd and Pb contents in the cocoon shell from Yangjiazhai fitted the Technical Specifications of Ecological Textiles (GB/T 18885–2009, China), the ratio of cocoon shell was reduced by 17.06% under the stress of heavy metals. Developing the sericulture industry could be a reasonable way to utilise the tailings pond. [ABSTRACT FROM AUTHOR] more...
- Published
- 2024
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