苏州河沉积物中多环麝香分布特点的初步研究

Preliminary study on the occurrence and distribution of polycyclic musks in sediments from Suzhou creek

采用GC-MS定性定量分析方法,对苏州河上海市区段10个表层沉积物中多环麝香污染水平及分布特点进行了研究.在10个沉积物样品中检测出2.76～4.54μg.kg-1萨利麝香(ADBI)、56.88～552.08μg.kg-1佳乐麝香(HHCB)以及25.79～117.25μg.kg-1吐纳麝香(AHTN);除北新泾采样点外,其余9个样品中检测出检测限(LOD)～3.15μg.kg-1粉檀麝香(AHMI);在所有样品中均未检测出开许梅龙(DPMI)和特拉斯(ATII).试验结果显示,沉积物中多环麝香污染的主要成分为HHCB和AHTN,这一特征取决于香精香料行业中多环麝香的使用模式.由于长达百年的污水直排历史,与国外河流沉积物污染状况比较,苏州河沉积物中多环麝香污染更为严重.

The occurrence and distribution of polycyclic musks in 10 sediment samples from Suzhou creek, Shanghai, were studied using GC-MS. In the samples, 2.76 - 4.54 μg·kg^-14-acetyl - 1,1 -d/methyl - 6-tert-butylindan （ ADBI）, 56.88 - 552.08 μg·kg^-1 1,3,4,6,7,8- hexahydro -4,6,6,7,8, 8-hexamethylcyclopenta （g） - 2-benzopyran （ HHCB ） and 25.79 - 117.25 μg·kg^-1 7-acetyl - 1,1,3,4,4,6 - hexamethyl - 1,2,3,4-tetrahydro naphthalene （AHTN） were detected with HHCB and AHTN being the main components. 6-acetyl-1,1,2,3 ,3 ,5-hexamethylindan （AHMI） was found in 9 out of 10 samples at concentrations ranging from LODs to 3.15μg·kg^-1, whereas 1,2,3,5,6,7-hexahydro-1,1,2,3,3-pentamethyl -4H-inden -4- one （DPMI） and 5-acetyl - 1,1,2,6 -tetramethyl-3-isopropylindan （ATII） were not found in any samples. The distribution pattern of polycyclic musks in the sediments is related to the pattern of products used in China. Compared with concentration levels reported in other references, severer contamination was found in Suzhou creek due to direct discharge of wastewater into it.