Show simple item record

dc.contributor.authorXin, Lingling
dc.contributor.authorWang, Xudong
dc.contributor.authorGuo, Guangmei
dc.contributor.authorWang, Xiaoru
dc.contributor.author王小如
dc.contributor.authorChen, Xi
dc.contributor.author陈曦
dc.date.accessioned2011-06-01T00:07:40Z
dc.date.available2011-06-01T00:07:40Z
dc.date.issued2007
dc.identifier.citationMEASUREMENT SCIENCE & TECHNOLOGY,2007,18(9):2878-2884zh_CN
dc.identifier.issn0957-0233
dc.identifier.urihttp://dx.doi.org/doi:10.1088/0957-0233/18/9/017
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/9306
dc.description.abstractAn on- line roboticized apparatus, including an optical biosensing film with an automatic flow sampling system, has been developed for biochemical oxygen demand ( BOD) determination of seawater. The sensing film employed in the apparatus consisted of an organically modified silicate ( ORMOSIL) film embedded with tri( 4,7- diphenyl- 1,10- phenanthroline) ruthenium( II) perchlorate. Three species of microorganism cultivated from seawater were immobilized in an ORMOSIL- polyvinyl alcohol matrix. Possible factors affecting BOD determination were studied, including sampling frequency, temperature, pH and sodium chloride concentration. Based on measurements of the linear fluctuant coefficients and the reproducibility of its response to seawater, the BOD apparatus showed the advantages of high veracity and short response time. Generally, the linear fluctuant coefficient ( R-2) in the BOD range 0.2 - 40 mg l(-1) was 0.9945 when using a glucose/ glutamate ( GGA) BOD standard solution. A reproducible response for the BOD sensing film of within +/- 2.8% could be obtained in the 2 mg l(-1) GGA solution. The BOD apparatus was applied to the BOD determination of seawater, and the values estimated by this biosensing apparatus correlated well with those determined by the conventional 5 day BOD ( BOD5) test.zh_CN
dc.language.isoenzh_CN
dc.publisherIOP PUBLISHING LTDzh_CN
dc.subjectbiochemical oxygen demandzh_CN
dc.subjectsensing filmzh_CN
dc.subjectBOD apparatuszh_CN
dc.subjectsol-gelzh_CN
dc.subjectormosilszh_CN
dc.titleAn optical biosensing film for biochemical oxygen demand determination in seawater with an automatic flow sampling systemzh_CN
dc.typeArticlezh_CN


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record