【摘 要】
：
An organically modified silicate (ORMOSIL) as a matrix for oxygen-sensitive sensor, in which dimethyldimethoxysilane was selected as an organic modifier in the
【机 构】
：
Department of Chemistry and the Key Laboratory of Analytical Sciences of Ministry of Education,State
【基金项目】
：
国家高技术研究发展计划(863计划);the Program for New Century Excellent Talents in University of China (NCET);福建省自然科学基金
论文部分内容阅读
An organically modified silicate (ORMOSIL) as a matrix for oxygen-sensitive sensor, in which dimethyldimethoxysilane was selected as an organic modifier in the precursor, is described. The sensing film with tris-(4,7-diphenyl-1,10-phenanthroline) ruthenium(II) as an indicator developed in this paper was characterized by efficient quenching by oxygen. Blue light-emitting diodes ((max ＝ 475 nm) were employed as light excitation source. The linear range of the dissolved oxygen was from 0.5 to 16 (g/mL. The measured RSD was 2%, the response time (t95) was 60 s, and the determination limit was 0.2 (g/mL. A portable and inexpensive luminescence-based sensor was established and applied to the determination of dissolved oxygen in the surface water.
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