Analysis of two odorous compounds in sediment in west nearshore zone of Taihu
LIU Xian-sheng, XU Xiao-guang, HUANG He-yong, ZHAO Yan-ping, CHEN Chong, ZHAO Yue, WANG Guo-xiang
Jiangsu Key Lab of Environmental Change & Ecological Construction, Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, School of Environment, Nanjing Normal University, Nanjing 210023, China
In this study, two typical particulate taste and odor compounds of β-Cyclocitral and β-Ionone in the sediments of the west littoral zone of Lake Taihu were investigated, by applying the headspace solid phase micro extraction method and the preconcentration and temperament combined technology. The results displayed that the highest contents of the β-Cyclocitral and β-Ionone in the surface sediments around the Maodu River was detected to be 797.88ng/(g·dw) and 1669.37ng/(g·dw), respectively, which was far higher than that of olfactory threshold. In the spatial distribution, the content of the taste and odor compounds was higher in natural reed zone than that of the artificial reed ditch in the surface sediment (<4cm), and similarly, it was higher in the near shore than that of in the open area. When the high-density cyanobacteria gathered, died and deposited to the bottom of the lake, the sediment Eh was reduced, which promoted the produce of taste and odor compounds and the formation of black-bloom. Therefore, we propose to immediately remove the cyanobacteria and dredge the sediments in the littoral zone of Lake Taihu.
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LIU Xian-sheng, XU Xiao-guang, HUANG He-yong, ZHAO Yan-ping, CHEN Chong, ZHAO Yue, WANG Guo-xiang. Analysis of two odorous compounds in sediment in west nearshore zone of Taihu. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(1): 302-309.
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