| 摘要: |
| 酸可挥发硫化物(AVS)是沉积物中的单硫化二价金属部分，是研究碳循环与硫循环的重要介质。WAVS的控 制因素入手,对青岛市胶州湾李村河口区4个沉积柱状样中的AVS和有机质与活性铁含量进行了科学检测,探讨了 其环境响应特征。结果表明，该区沉积物中的AVS含量较高(198.41 与一些热带港湾的富硫酸盐含量接近，这与该区的高有机质、高沉积速率和高活性铁含量相关。沉积环境是控制AVS含量的内因，不同的沉积环境能 够导致AVS生成的制约因素发生变化，近河口区的AVS生成受到活性铁含量的制约,而远离河口区则受到有机质 含量的制约,其制约能力从高到低的排列顺序为有机质含量与来源、活性铁含量、氧化还原电位、沉积速率、硫酸盐 含量。另外,由于近河口处的高AVS含量及活性铁的控制，导致AVS成为重金属的主要附存方式,这将为重金属的 再循环(毒性)研究提供重要的参考依据。 |
| 关键词: 胶州湾 三角洲 酸可挥发硫化物 有机碳 活性铁 控制因素 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金项目(40376038)；中国科学院知识创新工程重要方向项目(KZCX3-SW-219) |
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| Environmental response of acid volatile sulfide in sediments of Licun estuary in Jiaozhou Bay |
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YU Wen-quan1,2,3,ZHONG Shao-jun1,PU Xiao-qiang4,LIU Fei5,XU Li-jun1
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(1. Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071，Shandong Province, China ;2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China;3. Faculty of Geo-Resource and Information in China University of Petroleum，Dongying 257061，Shandong Province, China ;4. Engineering College in Guangdong Ocean University，Zhanjiang 524088, Guangdong Province, China;5. North China Sea Branch of the State Oceanic Administration，Qingdao 266033，Shandong Province，China )
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| Abstract: |
| The acid volatile sulfide (AVS) is the fraction of monosulfuring divalent metal. It is important medium for carbon cycle and sulfur cycle. By reseaching AVS controlling factors, the AVS, organic matter and reactive Fe contents of four sediment cores collected from the Licun estuary of the Jiaozhou Bay near Qingdao, China, were examined，and the environmental response of AVS was discussed. The results show that the AVS content of 198.41jxmol/g is relatively high and approaches that of some tropic rich sulfate bays, which relates to the high organic matter, rate of deposition and reactive Fe content. The sedimental environment was the inherence causation of the AVS content. AVS near the estuary was restrained by reactive Fe content, but that faraway the estuary was restrained by organic content. And the controlling factors in descending order of constraint capability are organic content and source, reactive Fe content, Eh，sedimentation rate, sulfate content. The high content of AVS and the control of reactive Fe make the reactive faction of heavy metals adhere to AVS near the estuary This can provide an important basis for the recirculation study of heavy metals. |
| Key words: Jiaozhou Bay delta acid volatile sulilde( AVS) organic carbon reactive Fe controlling factor |
