采集了长江重庆段干流以及重要支流共7个断面的表层水样，采用液相色谱法分析15种优先控制的多环芳烃（PAHs）．结果表明，水体中总PAHs浓度范围为6．44—109．39 ng·L－1，平均值为41．83 ng·L－1．在5个断面水体中检出苯并（a）芘，浓度为0．05—1．32 ng·L－1，低于我国地表水标准限值（2．8 ng·L－1）．长江重庆段的PAHs浓度水平低于大部分国内其他河流，与国外一些河流的浓度水平相当． PAHs组成以中低环PAHs （3环和4环）为主，平均比例分别为55．7％和38．8％，高环PAHs（5环和6环）含量较低，分别占3．6％和1．9％．示踪PAHs比值法结果显示长江重庆段表层水体PAHs主要来源于石化产品的泄漏污染．
Surface water was collected from 7 sampling sites in the stream and tributary of Chongqing section of the Yangtze River, and 15 priority PAHs were determined by high performance liquid chromatography. The result indicated that the concentration of total PAHs ranged from 6. 44 to 109.39 ng·L-1 and the average concentration was 41.83 ng·L-1. Benzo(a)pyrene in the samples from 5 sites were detected with concentration of 0. 05—1. 32 ng·L-1, which is below the environmental quality standards(2.8 ng·L-1) for surface water in China. The PAHs concentration level of Chongqing section of the Yangtze River is similar to that of rivers in foreign countries and lower than some other rivers in China. The predominant PAHs were 3—4 ring PAHs, averagely accounting for 55.7% and 38.8%, while 5—6 ring PAHs had a much lower proportion of 3.6% and 1. 9%. The ratio of specific PAHs indicated that PAHs mainly originated from spillages of petrochemical products.
参考文献
| [1] | International Agency for Research on Cancer,IARC monographs on the evaluation of the carcinogenic risk of chemicals to humans. Overall evaluation of carcinogenity:an updating of IAPC monographs[R]. Lyon,France:International Agency for Research on Cancer,1987 |
| [2] | US Environmental Protection Agency. Drinking water standards and health advisories table[R]. 2007 |
| [3] | 周文敏,傅徳黔,孙宗光 . 水中优先控制污染物黑名单[J].中国环境监测,1990,6(4):1-3. |
| [4] | 段小丽. 多环芳烃污染的人体暴露和健康风险评价方法[M],北京:中国环境科学出版社,2011 |
| [5] | 冯承莲,夏星辉,周追,呼丽娟.长江武汉段水体中多环芳烃的分布及来源分析[J].环境科学学报,2007(11):1900-1908. |
| [6] | 王平,徐建,郭炜锋,戴树桂.黄河兰州段水环境中多环芳烃污染初步研究[J].中国环境监测,2007(03):48-51. |
| [7] | 李恭臣,夏星辉,王然,何孟常,肖翔群.黄河中下游水体中多环芳烃的分布及来源[J].环境科学,2006(09):1738-1743. |
| [8] | 曹治国,刘静玲,栾芸,李永丽,韩守亮,刘宝艳,王少明.滦河流域多环芳烃的污染特征、风险评价与来源辨析[J].环境科学学报,2010(02):246-253. |
| [9] | 吴兴让,尹平河,赵玲,李松涛,杨宇峰.珠江广州段水体微表层与次表层中多环芳烃的分布与组成[J].环境科学学报,2010(04):868-873. |
| [10] | 郭伟,何孟常,杨志峰,林春野,全向春,王浩正.大辽河水系表层水中多环芳烃的污染特征[J].应用生态学报,2007(07):1534-1538. |
| [11] | Doong R,Lin Y . Characterization and distribution of polycyclic aromatic hydrocarbon contaminations in surface sediment and water from Gao-ping River,Taiwan[J].Water Research,2004,38(7):1733-1744. |
| [12] | Zhang Z,Huang J,Yu G,et al . Occurrence of PAHs,PCBs and organochlorine pesticides in the Tonghui River of Beijing,China[J].Environmental Pollution,2004,130(2):249-261. |
| [13] | 蔡文良,罗固源,许晓毅,杜娴.嘉陵江重庆段表层水体多环芳烃的污染特征[J].环境科学,2012(07):2341-2346. |
| [14] | Götz R,Bauer O H,Friesel P,et al . Organic trace compounds in the water of the River Elbe near Hamburg[J].Chemosphere,1998,36(9):2103-2118. |
| [15] | Zhang S Y,Zhang Q,Shameka D,et al . Simultaneous quantification of polycyclic aromatic hydrocarbons (PAHs),polychlorinated biphenyls (PCBs),and pharmaceuticals and personal care products (PPCPs) in Mississippi river water,in New Orleans,Louisiana,USA[J].Chemosphere,2007,66(6):1057-1069. |
| [16] | Fernandes M B,Sicre M A,Boireau A,et al . Polycyclic aromatic hydrocarbons distribution in the Seine river and its estuary[J].Marine Pollution Bulletin,1997,34(11):857-867. |
| [17] | Malik A,Verma P,Singh A K,et al . Distribution of polycyclic aromatic hydrocarbons in water and bed sediments of the Gomti River,India[J].Environmental Monitoring and Assessment,2011,172:529-545. |
| [18] | 王超,彭涛,吕怡兵,滕恩江.液相色谱法测定水中16种多环芳烃的方法优化[J].环境化学,2014(01):62-68. |
| [19] | HJ 478-2009. 水质多环芳烃的测定液液萃取和固相萃取高效液相色谱法[S] |
| [20] | GB 3838-2002. 地表水环境质量标准[S] |
| [21] | US Environmental Protection Agency. National Recommended Water Quality Criteria,2009[S] |
| [22] | Budzinski H,Jones I,Bellocq J,et al . Evaluation of sediment contamination by polycyclic aromatic hydrocarbons in the Gironde estuary[J].Mar Chem,1997,58:85-97. |
| [23] | Woodhead R J,Law R J,Matthiessen P . Polycyclic aromatic hydrocarbons in surface sediments around England and Wales,and their possible biological significance[J].Mar Pollut Bull,1999,38(9):773-790. |
| [24] | Luca G D,Furesi A,Leardi R,et al . Polycyclic aromatic hydrocarbons assessment in the sediments of the Porto Torres Harbor (Northern Sardinia,Italy)[J].Mar Chem,2004,86:15-32. |
| [25] | Baumard P,Budzinski H,Michon Q,et al . Origin and bioavailability of PAHs in the Mediterranean Sea from mussel and sediment records[J].Estuar Coast Shelf Sci,1998,47(1):77-90. |
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