Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Oceanologia et Limnologia Sinica》 2016-01
Add to Favorite Get Latest Update

CORRELATION BETWEEN SPECIATION OF HEAVY METAL AND ENZYMATIC ACTIVITY IN SURFACE SEDIMENT OF MARICULTURE POND

LI Yu;GAO Huan;LIU Fu-Cheng;Huaihai Institute of Technology;  
Heavy metals including Cu, Zn, Pb, Cd, Cr, As, Mn have different forms in nature, and the specification of these metals varied in environment in certain relationship with activities of enzymes, including urease, alkaline phosphatase, catalase, and invertase. We sampled surface sediment from shrimp mariculture ponds in Lianyungang, Jiangsu, East China, and investigated the relationship through sequential extraction. Results show that the major forms of Cu and Zn were of organics-sulphides, Pb and Mn were in Fe/Mn oxides, Cr and Ni were mostly in residual fraction, and Cd was in exchangeable ions and carbonates. The activities of urease, alkaline phosphatase, catalase, and invertase were in range of 0.45—8.96mg/(g·24h), 2.45—6.69mg/(g·24h), 0.14—2.36 m L/(g·min), and 0.45—10.45mg/(g·24h), respectively. Clear correlation was found between urease activity and Cd, As of exchangeable, Cd of carbonate-associated, Cu, As of Fe/Mn-oxide fraction, and Zn, Pb, Cd, Mn of organics-sulphides fraction. The activity of alkaline phosphatase was significantly correlated with Fe/Mn-oxide fraction of Zn and Cd. The activity of catalase was significantly correlated with Cd of exchangeable, carbonate-associated and residual form, Cu, Cd, As of Fe/Mn-oxide fraction, and Zn, Pb, Cd, Mn of organics-sulphides fraction. Similar correlation was found between invertase and Cu, Cd, As of exchangeable, Cd of carbonate-associated, Cu, Cd, As of Fe/Mn-oxide fraction, Zn, Pb, Cd, Mn of organics-sulphides fraction, and Cd, As of residual form. Therefore, enzyme activity can be used to indicate alteration in heavy metal specification in aquiculture pond sediments.
【Fund】: 国家自然科学基金项目 41306114号;; 江苏省海洋生物技术重点实验室开放项目 2013HS008号;; 淮海工学院自然科学基金项目 Z2014017号;; 江苏省海洋科学与技术优势学科建设工程资助项目 5511201401X
【CateGory Index】: X55
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved