Étude des voies de transfert du plomb de l'environnement aux végétaux cultivés; Application á l'utilisation agricole de boues de station d'épuration

✍ Scribed by B. Berthet; C. Amiard-Triquet; C. Metayer; J. C. Amiard

• Publisher: Springer Netherlands
• Year: 1984
• Tongue: English
• Weight: 655 KB
• Volume: 21
• Category: Article
• ISSN: 0049-6979
• DOI: 10.1007/bf00163645

✦ Synopsis

The physico-chemical forms of Pb and its circulation through water or air, condition its biological accumulation. In order to appraise the relative importance of each vector, we have used this element in experimental systems under various forms according as it was associated with the soil, with mineral fertilizers or with sewage sludges. These sludges contained important quantities of organic matter and carbonate and, for some of them, of Fe and A1 oxides and hydroxides. The cultural systems were submitted to natural atmospheric conditions.

Selective extraction procedures showed the very small availability of Pb in the sewage sludges and in the soils. That is in accordance with the insignificant exports via vegetables and leached waters. Whatever the treatment may be, the Pb falls out particularly on the green parts of vegetables and, in a lesser extent, in the non-tuberous roots, showing the predominance of atmospheric pollutions. No appreciable migration to reproductive and reserve organs have been observed.