Lead behavior in soil treated with contaminated sewage sludge and cultivated with maize

Brazilian Archives of Biology and Technology

Marcilene Ferrari Barriquelo¹  Marinês Aparecida Juliatti¹  Margarete Soares Da Silva¹  Ervim Lenzi¹ 

[1] ,Universidade Estadual de Maringá Departamento de Química Maringá PR ,Brazil

关键词: Sewage sludge;    heavy metal;    lead;    environmental pollution;   

DOI  :  10.1590/S1516-89132003000400002

来源: SciELO

【 摘 要 】

Lead (Pb) behavior was studied in soil treated twice with sewage sludge contaminated with lead at interval of 18 months. Soil samples received five different treatments: three with lead [0 (reference); 2,500; 5,000 mug g-1] and two with a mixture of lead and cadmium (interferer) (2,500 + 2,500 and 5,000 + 5,000 mug g-1, respectively). Vases containing treated soil were cultivated with maize in a greenhouse for 75 days. Pb was extracted using nitric perchloric digestion and analyzed by atomic absorption spectroscopy. The soil, containing sewage sludge contaminated by lead presented a higher concentration of Pb. The metal concentration remained constant in all treatments at 20-60 cm depth. No absorption of Pb by the plants was detected.

【 授权许可】

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