Water body heavy metal real-time detection device and method based on iron oxyhydroxide nano material

Abstract

The invention discloses a real-time detection device and method for heavy metals in a water body based on an iron oxyhydroxide nano material. The real-time detection device comprises an electrochemical sensing module, a shielding driving module, a signal processing module, a Bluetooth transmission module and a power supply module, the microscopic surface of a silk-screen printing working electrode modified by iron oxyhydroxide contained in the electrochemical sensing module is of a sea urchin-shaped nanoscale acanthosphere structure, and the sensitivity to heavy metals is very high; a follower included in the shielding driving module can enable the voltage of a shielding layer to be consistent with the voltage of a corresponding inner core, distributed capacitance between the shielding layer and the inner core is eliminated, and meanwhile due to the one-way characteristic of the follower, the voltage of the shielding layer cannot affect the voltage of the inner core; the transmission Bluetooth module can be paired with intelligent terminals with a Bluetooth function, such as a computer, a smart phone and the like to transmit data. The method can realize on-site real-time detection of the heavy metals in the water body in combination with the intelligent terminal, has the advantages of high sensitivity, simple operation and high detection speed, and has a wide application prospect.

Description

technical field [0001] The invention relates to the field of detection of heavy metals in water, in particular to a real-time detection device and method for heavy metals in water based on iron oxyhydroxide nanomaterials. Background technique [0002] With the rapid development of my country's economy and society, while developing and utilizing water resources, the problem of water heavy metal pollution has gradually become prominent. Heavy metals discharged from fields such as metal mining and smelting, plastic electronics industry, agricultural fertilizer and feed enter the water body, and finally enter the human body through the food chain, endangering human health. At present, laboratory methods such as atomic absorption spectrometry and inductively coupled plasma mass spectrometry are used to detect heavy metals in them. However, this type of instrument requires complex pretreatment operations on water samples and cannot be applied to on-site real-time detection. [00...

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Problems solved by technology

At present, laboratory methods such as atomic absorption spectrometry and inductively coupled plasma mass spectrometry are used to detect heavy metals, but this type of instrument requires complex pretreatment operations on water samples and cannot be applied to on-site real-time detection

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