Soil–plant transfer of polychlorinated biphenyls in paddy fields

• Published in: The Science of the total environment Vol. 234; no. 1; pp. 119 - 126
• Main Authors: Chu, Shaogang, Cai, Meilin, Xu, Xiaobai
• Format: Journal Article
• Language: English
• Published: Shannon Elsevier B.V 30.08.1999; Elsevier Science
• Subjects: Animal, plant and microbial ecology; Applied ecology; Biological and medical sciences; Contamination; Ecotoxicology, biological effects of pollution; Effects of pollution and side effects of pesticides on plants and fungi; Environmental impact; Fundamental and applied biological sciences. Psychology; Grain (agricultural product); Oryza sativa; PCBs; Plants (botany); Polychlorinated biphenyls; Rice; Soil; Statistical methods; Transfer; Transport properties; Asia; China; Soil; Transfer; PCBs; Rice; Monocotyledones; Pollutant behavior; Soil pollution; Polychlorobiphenyl; Cereal crop; Oryza sativa; Gramineae; Chlorocarbon; Angiospermae; Spermatophyta; Paddy field; Soil plant relation; Concentration distribution
• ISSN: 0048-9697; 1879-1026
• DOI: 10.1016/S0048-9697(99)00167-9

In a field experiment, the transfer of polychlorinated biphenyls (PCBs) from contaminated soil to rice was investigated. The results show that rice is not subject to significant bioconcentration of PCBs from the surrounding environmental system and the distribution of PCBs in the plant shows that the concentration series is leaves>husk>stalk>rice. It is suggested that root uptake/translocation is not the main pathway of PCB contamination of rice, while atmospheric deposition might be the main pathway of most PCBs from soil to rice. Principal component analysis was performed with the standardized relative abundance of PCBs in the samples and main pollution source. The congener pattern of PCBs in the plant samples is not similar to those in soil and in fish.