A kind of portable cyanide analyzer and measuring method for environmental detection and monitoring
An environmental detection and analyzer technology, which is used in the analysis of materials, material analysis by electromagnetic means, instruments, etc., can solve the problems of time-consuming operation of photometry, instruments not suitable for field detection and emergency monitoring, and analytical sensitivity limitations.
Inactive Publication Date: 2015-10-28
JIANGSU JIANGFEN ELECTROANALYTICAL INSTR
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Problems solved by technology
However, the titration method is only suitable for the analysis of cyanide-containing water samples with a content greater than 1000 μg / L; the photometric method is time-consuming and cumbersome to operate, and the instrument is not suitable for field detection and emergency monitoring; the ion-selective electrode method is easily affected by the presence of ions in the solution. interference, which limits its analytical sensitivity
These have greatly limited the ease of use and operability of field detection and emergency monitoring of water quality cyanide pollution.
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[0014] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.
[0015] Such as figure 1 , The portable cyanide analyzer host is designed with USB interface 1, power interface 2, power indicator light 4 and three-electrode system interface 3. The host is connected to the computer through a USB cable, a 12V lithium battery or a 12V DC power adapter is connected to the power interface of the host, and the screen-printed electrodes are connected to the three-electrode system interface on the host through a three-electrode connection line.
[0016] When using a portable cyanide analyzer to detect polluted water sources or wastewater, first collect a water sample with a polyethylene bottle, and immediately add NaOH to fix the water sample. Generally, about 0.5g solid NaOH is added to each liter of water sample, and then the water sample is used The pore size is 0.45μm filter membrane. Take a certain volume of the te...
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The invention relates to a portable cyanide analyzer used for environmental detection and emergency monitoring and its determination method, the analyzer comprises an analyzer host, a silk screen printing electrode and special-purposed software. The analyzer employs 12V direct current supply and the silk screen printing electrode as an electrochemical sensor; all the experiment parameters are optimized and encapsulated in the software without setting by users; enrichment, dissolution, data acquisition, background correction, characteristic potential judgment, concentration calculation, result display and the like of ions to be measured can be automatically carried out when the determination is performed, thus the analyzer avoids the error caused by human elements during the determination process of the traditional electrochemical method. The analyzer has the advantages of good stability, high automation degree, high detection sensitivity and accurate detection result, the suitcase form design has the characteristics of small volume and convenient carrying, and the analyzer is especially suitable for on-site field and emergency detection.
Description
Technical field [0001] The invention relates to a portable cyanide analyzer, which is applied to water quality cyanide concentration detection and emergency monitoring of environmental protection and epidemic prevention departments. Background technique [0002] As we all know, cyanide is a highly toxic substance and is highly toxic to all living organisms. Cyanide enters the body through the skin, respiratory tract or digestive tract, and quickly decomposes free cyanide. By combining with iron, copper, molybdenum and other metal ions in various intracellular respiratory enzymes, the enzyme is inactivated and the cells cannot use oxygen. , Resulting in intracellular suffocation, poisoning and even death of life. The limit of cyanide specified in my country's "Drinking Water Hygiene Standards" and "Urban Water Quality Standards" is 50 μg / L, and the limit specified in the World Health Organization (WHO) Drinking Water Quality Standards is 70 μg / L. The literature pointed out that ...
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IPC IPC(8): G01N27/26G01N27/447
Inventor 乔涛朱培德吴荣坤朱顺梅
Owner JIANGSU JIANGFEN ELECTROANALYTICAL INSTR