7results about How to "Rapid Quantitative Analysis" patented technology

The invention relates to a method for quantitatively monitoring the pollution degree of groundwater. The method comprises the steps of near-infrared hyperspectral imaging, construction of a prediction model and fitting of a prediction function. The invention further provides a groundwater analysis system and application of the method. According to the method, a hyperspectral imaging technology is adopted to shoot a mixed sample of organic pollutants and water, key features of a sample image are obtained by combining an image preprocessing technology and a feature extraction technology, the sample features with remarkable performance are used as training data, and a machine learning algorithm is applied to obtain training data; the model can accurately predict the water-oil volume ratio in a sample, and meanwhile, provides spatial distribution of the organic pollutants in the environment, so that an efficient and innovative solution is provided for quantitative analysis of the organic pollutants.

The invention discloses a device and method for monitoring slope stability by using a Beidou positioning device, and the method comprises the steps: carrying out the high-resolution ground image collection of a slope through an unmanned plane, and carrying out the preprocessing of the collected data, and generating DSM data; arranging side slope monitoring points, acquiring side slope point location data by using a Beidou high-precision positioning device, and then processing the side slope point location data to form three-dimensional coordinates; according to the method, the three-dimensional coordinates and slope DSM data are utilized to determine the fluctuation condition of the slope terrain, then the size and shape of a grid are set, a slope surface is divided into a plurality of regular grid units, and the slope stability is analyzed in combination with the volume of each grid unit and the physical characteristics of a soil body. According to the method, the sliding force and the stability coefficient of the slope can be accurately evaluated by calculating the volume and the weight of each grid unit and combining the mechanical parameters of the soil body. The quantitative analysis provides a scientific basis for engineering decision making, so that slope stability evaluation is more objective and accurate.

The present invention discloses an automated analysis system and instrument for ammonia nitrogen based on flow analysis technology, and belongs to the technical field of chemical analysis and quantitative detection. The instrument developed by the present invention can realize automatic and rapid determination of ammonia nitrogen in different detection ranges in various water quality samples, and the obtained results are accurate and reliable. The characteristics of the present invention are that, firstly, a new type of flow analysis system is designed and established, which, on the basis of inheriting the advantages of traditional flow injection analysis and sequential injection analysis technology, solves many problems existing in these technologies, such as the inconvenience of using peristaltic pumps, high cost of using rotary valves, and inability to be used for online monitoring and unattended operation. The automated analysis instrument developed based on this can realize true one-button start-up; secondly, based on the analysis system, a dedicated analysis flow path is designed for the salicylic acid reaction system involving ammonia nitrogen, and after optimizing the system parameters and reaction conditions, the obtained detection performance indicators all perform well.

This invention relates to the field of glucose detection technology, and discloses a method based on Au-MnO X A method for glucose detection using nanocomposite materials and its application. The glucose detection method provided by this invention utilizes Au-MnO4. X The nanocomposite material possesses a dual-enzyme cascade catalytic activity similar to glucose oxidase and catalase, avoiding the drawbacks of poor stability, easy inactivation, and high preparation cost of natural enzymes. The material exhibits good stability and can be stored for a long time. The oxygen bubbles generated by catalysis can be directly observed with the naked eye, and the bubble volume can be quantified by combining photography and image processing software, eliminating the need for large instruments and simplifying the operation. The method demonstrates good sensitivity and selectivity, showing a good linear relationship between bubble volume and concentration within the glucose concentration range of 4-8 mmol / L. It also exhibits excellent resistance to common interfering substances such as fructose, starch, and sucrose, and can be directly used for rapid quantitative analysis of glucose in liquid samples such as beverages, blood, and body fluids, meeting the needs of on-site real-time detection.

The invention discloses a quantitative analysis method of PLA (polylactic acid) in PHA (polyhydroxyalkanoate). The method comprises the following steps: respectively testing PHA samples mixed with PLA in different proportions by using a differential scanning calorimeter to obtain a differential scanning calorimetry curve; establishing a standard fitting curve according to the linear relation between the curve intensity and concentration at the PHA melting point peak of 155-157 DEG C and the curve intensity and concentration at the PLA melting point peak of 171-173 DEG C; and the PLA is quantitatively analyzed according to the curve intensity of a PLA melting point peak at 171-173 DEG C in a differential scanning calorimeter. The quantitative analysis method provided by the invention is simple and efficient, and requires less sample amount.

The invention discloses an atmospheric pollution control and pollutant online monitoring platform which comprises a data billboard module, an inspection ledger module, an environmental protection monitoring module, an environmental protection map module, an environmental protection file module, an environmental protection think tank module, a system management module and a system tool module. And the data billboard module comprises an environmental assessment classification form, a pollution discharge permission classification form, a construction progress form and the like. The method has the advantages that new environmental protection monitoring data codes are matched and designed, monitoring data are obtained, processed, stored, inquired and visually displayed, an environmental protection graph is constructed and applied, and objects and environmental protection archives are associated and presented to a management layer in a more visual mode. The sampling speed of the platform is improved by at least 5% compared with the prior art, the data analysis accuracy of the platform is improved by at least 7% compared with the prior art, the access response time of the platform is shorter than 3 seconds, and the platform can be applied to a WEB end and an applet end and has the advantages of rich atmosphere management forms, high accuracy and wider application range.

This invention discloses a method and application for colorimetric analysis of antibiotics using a paper-based detection chip. The method includes: preparing a paper-based detection unit; immersing the paper-based detection unit in a NiCo@C HNs solution modified with nucleic acid aptamers; drying to obtain a paper-based detection chip; adding samples containing different concentrations of antibiotics for reaction; then adding a solution containing TMB and H2O2 for colorimetric reaction; using a mobile phone to identify color intensity to obtain RGB or grayscale values; selecting the linear curve with the highest fitting degree between antibiotic concentration and RGB or grayscale values ​​as the antibiotic detection standard curve; and then quantitatively detecting the antibiotic content based on the RGB or grayscale values ​​of the measured sample. Antibiotics can also be qualitatively detected based on colorimetric analysis. This method has advantages such as low cost, simple operation, fast response, strong anti-interference ability, and on-site detection capability, and can be applied to the detection of antibiotic residues in the environment and food.