DISTRIBUTION AND ACCUMULATION OF THE PERSISTENT ORGANIC POLLUTANTS  OCPS VÀ PCBS IN  THE COASTAL WATTER OF NORTH VIETNAM

Duong Thanh Nghi; Tran Duc Thanh; Tran Van Quy

doi:10.15625/1859-3097/13/1/3508

Author affiliations

Authors

Duong Thanh Nghi Institute of Marine Environment and Resources-VAST
Tran Duc Thanh Institute of Marine Environment and Resources-VAST
Tran Van Quy Institute of Marine Environment and Resources-VAST

DOI:

https://doi.org/10.15625/1859-3097/13/1/3508

Keywords:

Persistent of organic pollutants, OCPs, PCBs, bio-accumulation, Vietnam coastal watter.

Abstract

The persistent organic pollutants OCPs (Lindan, Aldrin, Endrin, Dieldrin, 4,4-DDE, 4,4-DDD, 4,4-DDT) and PCBs (28, 52, 101, 138, 153, 180) were determined in three components of water, sediment and clam tissues in the coastal watter of North Vietnam in March and August 2011. The results show that the concentrations of ∑OCPs are from 8.79 - 18.35ng/l and ∑PCBs from 8.80 - 254.75µg/l in water; ∑OCPs from 0.36 - 6.81ng/g dry and ∑PCBs from 0.35 - 2.20µg/kg dry in bottom surface sedim-ents; and ∑OCPs from 2.46 - 7.48ng/g dry and ∑PCBs from 2.31 - 52.98µg/kg dry in clam tissues (Meretrix lyrata). The pollutant distribution of ∑OCPs and ∑PCBs at the envoronment components in the coastal sea of North Vietnam is varied by the seasons. By the bio-accumulation factor (BAF) of OCPs from 32.78 - 75.69; and PCBs from 16.28 to 168.37, the bio-accumulation risk of them is ava-ilable in the clam.