Effects of burnings of wax apple stubble and rice straw on polychlorinated dibenzo-p-dioxin and dibenzofuran concentrations in air and soil.
J Air Waste Manag Assoc
; 57(4): 457-64, 2007 Apr.
Article
en En
| MEDLINE
| ID: mdl-17458464
ABSTRACT
Measurements of the concentrations of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) were made in ambient air, ash, and soil impacted by the open burning of wax apple and rice straw residues. Measurements showed that the mean PCDD/F concentration (0.458 pg I-TEQ/Nm3; international toxicity equivalence) in air at two wax apple orchards during open burning increased markedly, -8.1 times higher than that (0.057 pg I-TEQ/Nm3); before open burning. In addition, the mean PCDD/F concentration (0.409 pg I-TEQ/Nm3) in ambient air at a rice straw field was 4.6 times higher than that (0.089 pg I-TEQ/Nm3) before open burning. After burning the residues of wax apple stubble and rice straw, the contents of PCDD/F in ashes were 1.393 and 1.568 ng I-TEQ/kg-ash, respectively, and the contents of PCDD/F in soil were 2.258 and 2.890 ng I-TEQ/kg-soil, respectively. Therefore, the turnover of soil with the ash after open burning over years will result in the accumulation of PCDD/Fs in farm soils.
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Bases de datos:
MEDLINE
Asunto principal:
Contaminantes del Suelo
/
Benzofuranos
/
Incineración
/
Productos Agrícolas
/
Contaminantes Atmosféricos
/
Dibenzodioxinas Policloradas
País/Región como asunto:
Asia
Idioma:
En
Revista:
J Air Waste Manag Assoc
Asunto de la revista:
SAUDE AMBIENTAL
Año:
2007
Tipo del documento:
Article
País de afiliación:
China