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[China Instrument Network Instrument R&D] From April 20th to April 21st, the National Institute of Metrology of Heilongjiang Province took charge of the development and application of national major scientific instruments and equipment, special “high-power and high-grade standard DC power supplyâ€, and provincial basic scientific research business in Heilongjiang Province. Research project “Study of hanging type metering bottle calibration meterâ€, AQSIQ quality inspection public welfare industry research project “Study on calibration method of atmospheric particulate PM2.5 monitoring instrument†“Subproject†“Atmospheric PM2.5 The four projects for the study of polycyclic aromatic hydrocarbons detection reference materials and the AQSIQ science and technology plan project "Science method-based rice variety identification technology research" passed the acceptance inspection by the AQSIQ under the supervision of the expert from the Provincial Quality Supervision Bureau. .
The device developed by the “Verified Charge Metering Bottle Verification Instrument†project adopts flow rate control technology to improve the calibration accuracy of the calibration instrument, and has the functions of parameter setting and data saving, and realizes the free hanging type sealed liquid storage device in a pollution-free environment. Demolition capacity on-site verification. It can solve the problems of rapid detection of the accuracy of hundreds of large-capacity measuring flasks used in food processing enterprises in the province, and ensure that they are accurate and free from pollution during the inspection process to ensure fair trade settlement. The device fills the gap in the measurement verification of raw milk purchase in China. The device has achieved the industrialization goal of R&D-production-sales-service. It has become the standard metrology instrument for the measurement of suspended metering devices in Heilongjiang province, solved the measurement disputes between dairy farmers and milk collection companies, and protected milk. The vital interests of farmers also ensure the safety of milk sources. At present, the city's 13 municipal metrology and testing centers and some county-level metrology institutes have all used the device.
“Patient Determination of PAHs in Atmospheric PM2.5†project, the standard material preparation materials were collected from atmospheric PM2.5 particles, and PAHs were extracted using three extraction techniques (cable extraction, microwave extraction, and ultrasonic extraction). Ultrasound extraction results are best. Through a series of treatment processes and multiple laboratory combined values, two kinds of standard substances (including 16 kinds of polycyclic aromatic hydrocarbons) were prepared, which provided a unified traceability basis for the determination of PAHs in PM2.5. The accurate detection value also makes the test results comparable. The standard materials developed by this achievement fill the gaps in the domestic market. The standard substance preparation and valuation techniques have reached the international advanced level, and the PAHs monitoring and detection and analysis instruments in the PM2.5 have improved the level of fixed value and the level of value transfer to implement laboratory quality. The Assurance and Quality Control (QA/QC) system provides important tools.
The “Science method-based rice variety identification technology research†project uses ICP-MS to determine the contents of rice in four provinces, and analyzes the variation of each element in rice by variance analysis, principal component analysis, and discriminant analysis. The main 8 elements (Ca, Mn, Zn, Rb, Sr, Mo, Cd, Cs) closely related to rice growth areas were selected, and the overall correct discrimination rate for the identification of rice production areas was 85%. As an effective indicator for the identification of rice origins. This achievement has a certain degree of innovation, fills the domestic gap, and establishes an accurate and reliable new method for identifying and confirming the origin of rice, and provides scientific and technological support for the protection of the healthy development of the famous and special geographically marked agricultural products industry and standardizing the market order.
(Original title: The four scientific research projects of the Heilongjiang Provincial Metrology and Testing Institute passed the acceptance check)
The device developed by the “Verified Charge Metering Bottle Verification Instrument†project adopts flow rate control technology to improve the calibration accuracy of the calibration instrument, and has the functions of parameter setting and data saving, and realizes the free hanging type sealed liquid storage device in a pollution-free environment. Demolition capacity on-site verification. It can solve the problems of rapid detection of the accuracy of hundreds of large-capacity measuring flasks used in food processing enterprises in the province, and ensure that they are accurate and free from pollution during the inspection process to ensure fair trade settlement. The device fills the gap in the measurement verification of raw milk purchase in China. The device has achieved the industrialization goal of R&D-production-sales-service. It has become the standard metrology instrument for the measurement of suspended metering devices in Heilongjiang province, solved the measurement disputes between dairy farmers and milk collection companies, and protected milk. The vital interests of farmers also ensure the safety of milk sources. At present, the city's 13 municipal metrology and testing centers and some county-level metrology institutes have all used the device.
“Patient Determination of PAHs in Atmospheric PM2.5†project, the standard material preparation materials were collected from atmospheric PM2.5 particles, and PAHs were extracted using three extraction techniques (cable extraction, microwave extraction, and ultrasonic extraction). Ultrasound extraction results are best. Through a series of treatment processes and multiple laboratory combined values, two kinds of standard substances (including 16 kinds of polycyclic aromatic hydrocarbons) were prepared, which provided a unified traceability basis for the determination of PAHs in PM2.5. The accurate detection value also makes the test results comparable. The standard materials developed by this achievement fill the gaps in the domestic market. The standard substance preparation and valuation techniques have reached the international advanced level, and the PAHs monitoring and detection and analysis instruments in the PM2.5 have improved the level of fixed value and the level of value transfer to implement laboratory quality. The Assurance and Quality Control (QA/QC) system provides important tools.
The “Science method-based rice variety identification technology research†project uses ICP-MS to determine the contents of rice in four provinces, and analyzes the variation of each element in rice by variance analysis, principal component analysis, and discriminant analysis. The main 8 elements (Ca, Mn, Zn, Rb, Sr, Mo, Cd, Cs) closely related to rice growth areas were selected, and the overall correct discrimination rate for the identification of rice production areas was 85%. As an effective indicator for the identification of rice origins. This achievement has a certain degree of innovation, fills the domestic gap, and establishes an accurate and reliable new method for identifying and confirming the origin of rice, and provides scientific and technological support for the protection of the healthy development of the famous and special geographically marked agricultural products industry and standardizing the market order.
(Original title: The four scientific research projects of the Heilongjiang Provincial Metrology and Testing Institute passed the acceptance check)
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