State Key laboratory of Environmental Simulation and Pollution Control, Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China.
J Environ Sci (China). 2009;21(5):561-7. doi: 10.1016/s1001-0742(08)62308-6.
The two representative polycyclic musks, 1-(5,6,7,8-tetrahydro-3,5,5,6,8,8-hexamethyl-2-naphthenyl)-ethanone (AHTN) and 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta[g]-2-benzopyrane (HHCB), were measured in aqueous samples and sludge samples of three sewage treatment plants (STPs) in Beijing, China using a gas chromatograph-mass spectrometry. The HHCB and AHTN concentration ranges in the influents were 1251.4-3003.8 ng/L and 111.9-286.3 ng/L, respectively. Meanwhile, the ranges of 492.8-1285.3 ng/L for HHCB and 47.3-89.3 ng/L for AHTN were present in the effluents. The musks in the sludges were three to four orders of magnitude higher than those in aqueous sewages. The removal efficiencies of the two musks varied in the ranges of 41.7%-70.1% for HHCB, and 25.5%-68.8% for AHTN. Adsorption onto suspended particulate matter played an important role in removing musks from the sewages. The HHCB/AHTN ratio along the treatment processes showed that the two musks had high similarity of removal from sewage by each reactor in STP. The musks in the effluent sewages may pose a low potential risk to aquatic environment in terms of the predicted-non-effect concentration. Nevertheless, considering the possible additive and synergistic effects with other compounds emitted via STPs, their bioconcentration and bioaccumulation in aquatic organisms and so on, it is essential to monitor these compounds in various compartments and to study their environmental fate.
采用气相色谱-质谱法，在中国北京的三个污水处理厂（STP）的水样和污泥样中检测了两种代表性的多环麝香，即 1-（5,6,7,8-四氢-3,5,5,6,8,8-六甲基-2-萘基）-乙酮（AHTN）和 1,3,4,6,7,8-六氢-4,6,6,7,8,8-六甲基环戊并[g]-2-苯并吡喃（HHCB）。进水 AHTN 的浓度范围为 111.9-286.3ng/L，HHCB 的浓度范围为 1251.4-3003.8ng/L；而出水 AHTN 的浓度范围为 47.3-89.3ng/L，HHCB 的浓度范围为 492.8-1285.3ng/L。与污水相比，污泥中麝香的浓度高 3 到 4 个数量级。HHCB 的去除效率在 41.7%-70.1%之间，AHTN 的去除效率在 25.5%-68.8%之间。吸附到悬浮颗粒物上对去除污水中的麝香起到了重要作用。处理过程中 HHCB/AHTN 比值表明，STP 中的各个反应器对两种麝香的去除具有很高的相似性。就预测无效应浓度而言，污水中的麝香对水生环境的潜在风险较低。然而，考虑到它们与污水处理厂排放的其他化合物的可能的加性和协同作用，以及它们在水生生物中的生物浓缩和生物积累等，有必要对这些化合物在不同隔室中的情况进行监测，并研究它们的环境归宿。
