Array filmsensor for simultaneously detecting Cu2+, Pb2+, Cd2+ and its preparing method

A thin-film sensor and array technology, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of long measurement cycle, complex pretreatment, and huge equipment, and achieve the effects of fast measurement, less sample solution, and convenient use.
CN100434910CInactive Publication Date: 2008-11-19NORTHEAST DIANLI UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHEAST DIANLI UNIVERSITY
Publication Date
2008-11-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The array film sensor for simultaneously detecting Cu2+, Pb2+ and Cd2+ ions includes one P-type or N-type Si chip as substrate, one SiO2 layer and three kinds of film sensitive separately to Cu2+, Pb2+ and Cd2+ ions successively on the substrate. It is prepared through one laser pulse depositing process to prepare these three kinds of film on the surface of SiO2. It is selective on Cu2+, Pb2+ and Cd2+ ions in solution, and may be used in detecting the contents of Cu2+, Pb2+ and Cd2+ ions. The present invention may be used for the simultaneous qualitative and quantitative detection of Cu2+, Pb2+ and Cd2+ in river and lake water, blood, body fluid, industrial effluent, Chinese medicine, vegetable, fruit, tea, etc.
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Description

technical field

[0001] The invention relates to a sensor and a preparation method for simultaneously detecting several heavy metals, in particular to a sensor for simultaneously detecting Cu 2+ , Pb 2+ 、Cd 2+ Arrayed thin film sensor and its preparation method. Background technique

[0002] Heavy metal ions (such as Zn 2+ , Pb 2+ 、Cd 2+ 、Cu 2+ 、Cr 6+ , Mn 5+ 、As 3+ , Fe 3+ , Hg 2+ ) can have harmful or even fatal effects on the human body, so the quantitative detection of heavy metals is of great significance in medicine, food, clinical and environmental monitoring. The current detection methods mainly include atomic absorption spectrophotometry and mass spectrometry, etc., but the equipment used in these methods is huge and expensive, requires complex pretreatment, long measurement period and skilled operators, which brings great problems in practical applications. Many inconveniences. Contents of the invention

[0003] The object of the present invention is ...

Claims

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