Hàm lượng kim loại nặng ảnh hưởng đến chất lượng nước sinh hoạt và thực phẩm được nuôi trồng tại khu vực có tồn lưu chất thải phòng thí nghiệm chung

Y HOC VIET NAM THANG 8 • SO 2/2010

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HAM LU'O'NG KIM LOAI NANG ANH HLFO'NG BEN CHAT LITONG

NUOC SINH HOAT VA THL/C PHAM DUOC NUOI TRONG TAI

KHU Vy C CO TON LUU CHAT THAl PHONG TH, NGHIEM CHUNG

Luong Thj Hong Van*, Phan Hoang Tuan*, Htra Nguyet Mai*

SUMMARY

STUDY ON THE CONTENTS OF HEAVY METALS IN WATER

AND SOME CREATURES IN THE SURROUDING AREAS OF

GENERAL LABORATORIES

In this research, the authors carried out the

analysis of the total content of As, Hg, Cd, Pb, Fe and

Mn in water (well-water and pond-water) and in

biological samples (Vegetables and animals) by AAS

and Metrohm 797 VA computrace.

The results showed that the contents of As, Hg,

Cd, Pb, Fe, Mn in water samples in the study area

were higher than those in control area from 1.25 to

7.7 times (p<0.05). Especially, the content of As, Hg,

* Dai hpc Thdi Nguyen

Cd and Pb were higher than allowable standard from

5.0 to 23.4 times.

Vegetables were polluted by heavy metals. The

content of As, Hg, Cd, Pb, Fe, Mn were higher those in

control area from 1.24 to 265.0 times (p<0.05).Among

them , As, Pb and Cd were higher than allowable

standard from 1.3 to 3.5 times.

Animals were polluted by heavy metals, too. The

content of As, Hg, Cd, Pb, Fe and Mn were higher than

those in control area from 1.1 to 58.0 times (p<0.05).

But all of them were lower than allowable standard.

There was a very close correlation between the

contents of heavy metals in animals, vegetables and

their content in water.

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