Table of Contents
Pollution- Environmental policy and legislation in China are neither strict nor effectively enforced.- Pollutants from Guangzhou and Shenzhen are washed into Hong Kongs estuarine waters.- The quality of drinking water and local food supplies are affected. - 2,000 major industrial factories and an estimated 200,000 smaller ones in Hong Kong. - In Hong Kong, agricultural pollution from New Territories is due to rearing of pigs and poultry, the populations of which are currently estimated to be 0.7 million and 7.5 million, respectively. - Hong Kong produces about 24,000 tonnes of solid wastes per day (HKEPD, 1995).- Since 3.5 million people and a large proportion of the industrial base are concentrated around Victoria Harbour of Hong Kong. Sewage and industrial effluents from these sources enter Victoria Harbour with little treatment (Connell et al, 1998).- In Hong Kong, over 25% of the land in the urban area has been gained from reclamation (Morton, 1989). The reduction in water area due to reclamation has reduced the tidal flushing of both Victoria and Tolo Harbours, and exacerbated the problems of pollution due to sewage discharges.
Chu S. G., Xi Z. Q., Xu X. B, Polychlorinated Biphenyl (PCB) Congeners in Mussel and other Mollusc from Da Chen Island, East China Sea, Bull. Environ. Contam. Toxicol., 55, 682 688, 1995 Bio-concentration ranged from 1.40 to 9.34 ?g/kg [PCBs] correlated with distance of sampling sites from the estuary of the river. Chu S., Xi Z., Xu X. Zhang Y., Xu Y, Induction of Micronuclei in peripheral erythrocytes of Misgurnus anguillicaudatus by polychlorinated biphenyls. Bull. Environ. Contam. Toxicol., 57, 179 - 182, 1996 Water polluted by PCBs have a possible mutagenicity of aquatic organisms Increase on the incidence of micronuclei with the increase of [PCB3] and time exposure Suitability of assessing peripheral blood of fish for the induction of micronuclei as a short term test for monitoring environmental genotoxicants
? Xi Z. Q., Chu S. G., Xu X. B., Zhang Y. Y. Xu. Y., Fang Y.P., Li W., Effects of PCBs on the Electrolyte Balance in Blood of Crucian Carp, Research Centre for Eco-Environmental Sciences, Academia Sinica, Beijing, China, (in process) Effect on dielectric concentration balance in the plasma of carp [Na+] ? [K+] ? No observable change in [Ca2+] & [Mg2+]? Zheng M. H., Bao Z. C., Wang K. O., Xu X. B., Levels of PCDDs and PCDFs in the Bleached Pulp from Chinese Pulp and Paper Industry, Bull. Environ. Contam. Toxicol., 59, 90 93, 1997 PCDDs in pulp ranged from 140.0 to 390.5 pg/g dry pulp PCDFs in pulp ranged from 7.3 to 80.4 pg/g dry pulp
Zheng M. H., Bao Z. C., Wang K. O., Xu X. B., Polychlorinated Dibenzo p Dioxins and Dibenzofurans in lake Sediments from Chinese Schistosomiasis Area, Bull. Environ. Contam. Toxicol., 59, 653 656, 1997 Total PCDDs & PCDFs were 15760 ng/g and 2260 ng/g in Na- PCP respectively Levels of PCDDs & PCDFs in lake sediments ranged from 51 to 220 ng/g and 0.3 to 15 ng/g respectively
|Author: Biology Dept.|