中文摘要：

对福州市20个内河表层沉积物样品中的三氯生（TCS）和甲基三氯生（MTCS）的含量进行了测定,并对其生态风险进行了评估.研究结果表明,沉积物中TCS和MTCS的含量范围分别为11.8-120.4μg·kg^-1和未检出（n.d.）-41.7μg·kg^-1,平均含量分别为50.1μg·kg^-1和7.8μg·kg^-1.沉积物中TCS总量和总有机碳（TOC）含量呈显著正相关关系（r=0.590,p〈0.05）,而MTCS和TOC之间无相关关系.用风险熵（RQ）对TCS和MTCS的生态风险进行了评估,发现有14个沉积物样品中TCS的RQ值和11个沉积物样品中MTCS的RQ值大于1,呈高风险;其他样品中TCS和MTCS（3个未检出样品除外）的RQ值介于0.1-1之间,均呈中等风险.

英文摘要：

The concentrations of triclosan（ TCS） and methyl-triclosan（ MTCS） were analyzed in 20 surface sediment samples collected from inland rivers in Fuzhou city. The observed concentrations of TCS and MTCS were in the ranges of 11. 8 to 120. 4 μg·kg^-1,undetectable（ n. d.） to 41. 7 μg·kg^-1,respectively; and the average concentrations were 50. 1 μg·kg^-1and 7. 8 μg·kg^-1,respectively. The concentration of TCS was positively correlated with the total organic carbon（ TOC） of the sediments（ r = 0. 590,p 〈0. 05）,whereas the concentration of MTCS was not the case. risk assessment results using the risk quotient（ RQ） method showed that TCS in 14 samples and MTCS in 11 samples posed high risks（ RQ 〉1）. TCS and MTCS in all other samples posed medium risk（ 0. 1≤RQ〈 1）,except for MTCS in the three samples with undetectable MTCS.