| || || Lal, Vincent Vishant .|
| || || Monitoring for Persistent organic pollutants (POPs) in ambient air, soil and sediments from Fiji |
Author:Lal, Vincent Vishant .
Institution: University of the South Pacific.
Call No.: pac In Process
Copyright:Under 10% of this thesis may be copied without the authors written permission
Abstract: To date limited data are available in the Fiji Islands on the levels of Persistent Organic Pollutants (POPs) in the Stockholm Convention. Only one study was done on organochlorine pesticides (OCPs) and polychlorinated biphenyl (PCBs) concentration in marine sediments and none have been done on polychlorinated di-benzodioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and the dioxin-like polychlorinated biphenyls (dl-PCBs) in the Fiji Islands. This thesis reports the concentration data on a range of PCDDs, PCDFs, dl-PCBs, seven organochlorine pesticides and seven indicator PCBs from ambient air, sediment and soil samples from different environments and landuse in Fiji Islands. A number of POPs were detected. The concentrations were generally very low (<10 ng g-1 dry weight), indicative of a relatively ‘less contaminated’ environment. Octachlorinated dibenzo-p-dioxin of the dioxin-like chemicals was found in the highest concentration at all sites in both soils and sediments with comparatively higher levels of dioxin-like chemicals found at locations close to open waste disposal sites within the urban or industrial land-use areas. Lindane was found in higher concentration in ambient air indicating recent use of this chemical. The variation in concentrations and congeners found at various land-use types, including the spatial and temporal variation and role of signature compounds that indicate possible sources of pollution to Fiji’s environment, are discussed.