Accumulation of lead and cadmium in vegetables and farmland near Hoa Khanh industrial zone, Da Nang city

Accumulation of lead and cadmium in vegetables and farmland near Hoa Khanh industrial zone, Da Nang city
Nơi đăng: Journal of Science, Earths Sciences, Số: volume 28, No. 3, Trang: 198 - 204, Năm: 2012, Loại bài viết: Bài báo, Quốc gia: Việt Nam.

Tóm tắt:

Farmland around industrial zones is generally polluted by the emission of heavy metal from factories. Thus the farmland can potentially cause negative accumulation of heavy metal in soil and in vegetables. Hoa Khanh industrial zone where many factories are now located, has led to adverse impacts on environment and habitats. The result from the scientific research has presented that concentration of lead in soil in Hoa Khanh Bac and Hoa Hiep Nam ward has been not yet polluted, but cadmium content is from 1.92 to 2.37 times higher than Vietnamese standard. Alternatively, heavy metal (Pb, Cd) content in spinach (Impomea aquatic Forrsika) shows that it is approximately the allowed limit; concentration of heavy metal in cabbage (>Brassica juncea L. Czern. et Coss>) is over, somewhere up to 18.7 times within Pb, up to 3.4 times within Cd, compared to the standard. The results of analytical correlation between heavy metal concentration in soil and vegetables are in a range from “weak correlation” to “strong correlation”. The results of this research are expected to provide significant data for both environment and vegetable management aspects.

Abstract:

Farmland around industrial zones is generally polluted by the emission of heavy metal from factories. Thus the farmland can potentially cause negative accumulation of heavy metal in soil and in vegetables. Hoa Khanh industrial zone where many factories are now located, has led to adverse impacts on environment and habitats. The result from the scientific research has presented that concentration of lead in soil in Hoa Khanh Bac and Hoa Hiep Nam ward has been not yet polluted, but cadmium content is from 1.92 to 2.37 times higher than Vietnamese standard. Alternatively, heavy metal (Pb, Cd) content in spinach (Impomea aquatic Forrsika) shows that it is approximately the allowed limit; concentration of heavy metal in cabbage (>Brassica juncea L. Czern. et Coss>) is over, somewhere up to 18.7 times within Pb, up to 3.4 times within Cd, compared to the standard. The results of analytical correlation between heavy metal concentration in soil and vegetables are in a range from “weak correlation” to “strong correlation”. The results of this research are expected to provide significant data for both environment and vegetable management aspects.