中文摘要：

测定并分析了珠江口、横门水道及附近鱼塘沉积物中4种美国EPA优先控制氯酚化合物（CPs）和双酚A（BPA）的污染特征。结果表明：4种USEPA优先控制CPs化合物中，五氯酚（PCP）和2，4-二氯酚（2，4-DCP）的检出率为100％，2，4，6-三氯酚（2，4，6-TCP）检出率为30％，2-氯酚（2．CP）的检出率为0，PCP、2，4，6-TCP、2，4-DCP的干重质量比范围分别为0．57—4．30ng／g、0．25～2．18ng／g和0．17～7．20ng／g；BPA的检出率为100％，质量比范围为0．58—2．16ng／s。上述酚类物质在河流沉积物中的质量比均高于它们在鱼塘和珠江口沉积物中的质量比。多元回归分析显示，4种CPs化合物、BPA与pH值和有机质等环境因子的相关性不显著。参照SSB阈值和EC／PNEC生态风险评价体系，珠江口地区沉积物中CPs和BPA等酚类物质导致生态风险的可能性较低。

英文摘要：

In this study, we have collected and analyzed surface sediments at the Pearl River Estuary （PRE） and its nearby coastal area in hope to find the pollution degree of bisphenol A （BPA） and four kinds of important chlorophenols （CPs）, i.e. pentachlorophenol （PCP）, 2-chlorophenol （2-CP）, 2,4-dichlorophenol （2,4-DCP）, 2,4,6-trichlorophenol （2,4,6-TCP）. The results of our investigation and analysis show that some of CPs and BPA contaminants exist in all of the collected sediments, in which the detection rate of PCP, 2,4- DCP and BPA can reach 100%. It indicates that the PRE area has been contaminated by all the three contaminants. 2,4,6-TCP was also detected in some of the sediment samples with the detection rate of 30%. However, 2-CP has not been detected in all of the sample-collecting areas. In addition, the concentrations of the above mentioned organic pollutants have been quantitatively analyzed. As to the contaminants with the detection rates of 100%, the content ranges of PCP, 2, 4-DCP, and BPA stand 0.57-4.30 ng/g, 0.17 - 7.20 ng/g, and 0.58- 2.16 ng/g, respectively （for dry weight）. As to 2,4,6-TCP, the content range in the sampling areas is only 0.25 - 2.18 ng/g. Though the contamination levels of the above areas are different for different sediments, the concentrations of all the detected pollutants in the sediments from the Estuary are higher than those in the sediments from fishpond and Pearl River mouth. In spite of the above detections, no significant relationship can be found between the contents of BPA or CPs with the main environmental factors such as pH and organic matter content. In accordance with the EC/PNEC evaluation system and the endowed sediment screening benchmarks （SSB） of the compounds in USEPA, the residue contents of BPA and CPs in the aquatic sediments of Pearl River estuary area wouldn＇ t seem to result in ecological hazards to the environment and human beings.