Data/hora: 04/06/2024 02:16:49

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 03/08/1998
Data da última atualização: | 28/03/2017
Autoria: | PARK, K. S.; KIM, N. B.; KIM, Y. S.; LEE, K. Y.; CHUN, S. K.; YOON, Y. Y.
Título: | A survey of trace elements in fresh-water fisg and rice along the Han river by neutron activation analysis.
Ano de publicação: | 1994
Fonte/Imprenta: | Biological Trace Element Research, v.43/45, p.229-237, 1994.
Idioma: | Inglês
Conteúdo: | For a case study of environmental pollution, radiochemical neutron activation analysis (RNAA) was applied to the crucian and rice collected along the Han River. The crucian was analyzed for three times in 1973, 1987 and 1990. Sixteen trace elements (Hg, Cd, As, Br, Cu, Na, K, Se, Cr, Hf, Rb, Fe, Zn, Co, La and Cs) were determined by RNAA using distillation and diethyldithiocarbamate extraction methods. Contents of Na, K, Se, Hf, Fe, Zn and Co were almost constant regardless of the sampling place and year. The contents of the other elements showed increasing trends down river, especially in the first investigation. At the lower part of the river, the contents showed decreasing trends with the time of sampling, especially during the first two investigations. These trends were typical for Hg and Cd. Rice was analyzed by the same method for 12 elements and the results showed no regional trends, but have decreased after 1973.
Palavras-Chave: | Analise de ativacao radio-quimica de neutros; Elementos basicos; Pollution river; Radiochemical neutron activation analysis; Rio poluido; RNAA.
Thesagro: | Arroz; Peixe.
Thesaurus Nal: | fish; rice; trace elements.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (35861-1) - ADC - SP - PP - SP15613 -  - 15613 - DIS