LTCC manifold for heavy metal detection system in biomedical and environmental fluids

[摘要] This work gives a description of how low temperature cofired ceramics (LTCC) technology is a suitable material for the fabrication of a flow injection analysis (FIA) meso-analytical system applicable for detection of heavy metals (in trace levels) in biological and environmental fluids. This paper presents the design processing, fabrication and materials characterization issues of a LTCC manifold integrated with sensor electrodes. The requirement of on-line measurement tests with high sensitivity for heavy metals has motivated the development of sensors for electrochemical stripping techniques in flow. Experiments involving short time pre-concentration scheme (60 s), for mercury and cooper, indicate a lower detection limit of 0.9 and 0.45 mug L-1, respectively, which is much lower than the maximum tolerable concentration for urinary fluids. Lower limits can be attained utilizing longer deposition times in order to achieve requirements for fresh waters. (C) 2004 Elsevier B.V. All rights reserved.

[发布日期] 2004-09-29

[效力级别]  Proceedings Paper

[关键词] low temperature cofired ceramics (LTCC);chemical sensors;FlA;heavy metals detection