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Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email. HJ 1010-2018: Specifications and Test Procedures for Ambient Air Quality Continuous Monitoring System with Gas Chromatography for Volatile Organic Compounds Status: Valid
Basic dataStandard ID: HJ 1010-2018 (HJ1010-2018)Description (Translated English): Specifications and Test Procedures for Ambient Air Quality Continuous Monitoring System with Gas Chromatography for Volatile Organic Compounds Sector / Industry: Environmental Protection Industry Standard Classification of Chinese Standard: Z15 Word Count Estimation: 17,172 Date of Issue: 2018-12-29 Date of Implementation: 2019-07-01 Regulation (derived from): Ministry of Ecology and Environment Announcement No. 75 of 2018 Issuing agency(ies): Ministry of Ecology and Environment HJ 1010-2018: Specifications and Test Procedures for Ambient Air Quality Continuous Monitoring System with Gas Chromatography for Volatile Organic Compounds---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Specifications and Test Procedures for Ambient Air Quality Continuous Monitoring System with Gas Chromatography for Volatile Organic Compounds National Environmental Protection Standard of the People's Republic Ambient air volatile organic compounds Monitoring system technical requirements and testing methods Specifications and Test Procedures forAmbient Air Quality Continuous Monitoring System with Gas Chromatography for Volatile Organic Compounds Published on.2018-12-29 2019-07-01 Implementation Department of Ecology and Environment i directory Foreword...ii 1 Scope...1 2 Normative references...1 3 Terms and Definitions...1 4 system working principle and composition...1 5 Technical requirements... 2 6 Performance indicators...4 7 Detection method...6 Appendix A (Normative Appendix) Table of 57 Volatile Organic Compounds...11 Appendix B (Normative Appendix) Test Items and Technical Requirements...12 ForewordTo protect the ecological ring for the implementation of the Environmental Protection Law of the People's Republic of China and the Law of the People's Republic of China This standard is formulated to ensure human health and to regulate the performance and quality of ambient air volatile organic compounds gas chromatography continuous monitoring system. This standard specifies the composition, technical requirements, performance indicators and requirements of the ambient air volatile organic compounds gas chromatography continuous monitoring system. Detection method. Appendix A to Appendix B of this standard are normative appendices. This standard is the first release. This standard is formulated by the Department of Eco-Environmental Monitoring of the Ministry of Ecology and Environment and the Department of Regulations and Standards. This standard was drafted. Beijing Environmental Protection Monitoring Center, China Environmental Monitoring Center, Peking University, Shanghai Environmental Department Research Institute, Shanghai Environmental Monitoring Center, Jiangsu Environmental Monitoring Center, Zhejiang Environmental Monitoring Center, Guangzhou Environmental Protection Science Research Institute, Wuhan Environmental Monitoring Center. This standard is approved by the Ministry of Ecology and Environment on December 29,.2018. This standard has been implemented since July 1,.2019. This standard is explained by the Ministry of Ecology and Environment.1 Environmental air volatile organic compounds gas chromatography continuous monitoring system technical requirementsAnd detection method1 Scope of applicationThis standard specifies the composition and technical requirements of the continuous monitoring system for volatile organic compounds in ambient air. Performance indicators and testing methods. This standard applies to the design, production and inspection of gas chromatography continuous monitoring system for the determination of volatile organic compounds in ambient air. Measurement.2 Normative referencesThis standard refers to the terms of the following documents. For undated references, the valid version applies to this standard. GB/T 30431 laboratory gas chromatograph GB/T 33864 mass spectrometer general specification HJ 212 pollutant online monitoring (monitoring) system data transmission standard HJ 654 Technical requirements for continuous automatic monitoring system for ambient air gaseous pollutants (SO2, NO2, O3, CO) Detection method3 Terms and definitions3.1 reference state reference state It refers to the state when the atmospheric temperature is 298.15 K and the atmospheric pressure is 1013.25 hPa. 3.2 valid data rate validated data rate The percentage of hours that the monitoring data is valid for a period of time as a percentage of the total operating hours.4 system working principle and composition4.1 Working principle Ambient air or standard gas enters the sampling system at a constant flow rate, and the volatile organic compounds are passed through low temperature or traps. Enrichment, separation by gas chromatography, etc., and detection by hydrogen flame ionization detector (FID) or mass spectrometry The detector (MSD) was tested to obtain the concentration of each component of the volatile organic compounds. 4.2 System components The monitoring system consists of a sample collection unit, a quality control unit, a gas source unit, an analysis unit, a data acquisition and transmission unit, and It consists of other auxiliary equipment. 24.2.1 Sample Collection Unit The sample collection unit is mainly composed of sampling pipeline, sampling pump and flow control unit for environmental air volatile organic Continuous automatic sampling of objects. The specific requirements of the sample collection unit are given in 5.4.1. 4.2.2 Quality Control Unit The quality control unit is mainly composed of zero gas, standard gas and dilution system, and is used for calibration and daily verification of analytical instruments. The specific requirements of the quality control unit are given in 5.4.2. 4.2.3 Air source unit The air source unit is mainly composed of a gas source and a pipeline, and is used for providing carrier gas, gas, and combustion gas required for system operation. See 5.4.3 for specific requirements for the air supply unit. 4.2.4 Analysis unit The analysis unit is mainly composed of an enrichment module, a column oven, a column, a detector, etc., and is used for collecting ambient air. The volatile organic components are enriched and separated, and the volatile organic components are quasi-deterministic and quantified. Analysis sheet See Section 5.4.4 for specific requirements. 4.2.5 Data Acquisition and Transmission Unit The data acquisition and transmission unit is used to collect, process and store monitoring data, and can transmit monitoring data and instruments according to instructions. Device working status information. The specific requirements for the data acquisition and transmission unit are given in 5.4.5.5 Technical requirements5.1 Appearance requirements 5.1.1 The appearance is neat and tidy, the surface coating and plating layer are not obviously peeled off, scratched, exposed and dirt, and the surface of the parts is free from rust; 5.1.2 should have a product nameplate, which should be marked with the instrument name, model specifications, production unit, factory number, date of manufacture, Information such as rated voltage and power; 5.1.3 The display of the host panel is clear, and the characters and logos are easy to identify; 5.1.4 All fasteners are not loose, each operation button and button are flexible and function properly; 5.1.5 The detachable part should be dismantled and disassembled. 5.2 Working conditions The monitoring system should function properly in the following environmental conditions. Ambient temperature. (20 ~ 30) ° C; Relative humidity. ≤85%; Atmospheric pressure. (800 ~ 1060) hPa; Supply voltage. AC (220 ± 22) V or (380 ± 38) V, (50 ± 1) Hz. 35.3 Safety requirements 5.3.1 Insulation resistance In the case of ambient temperature (20 ~ 30) ° C, relative humidity ≤ 85%, monitoring the system power terminal to the ground or the chassis The edge resistance is not less than 20 MΩ. 5.3.2 Insulation strength The monitoring system is at 1500 V (rms), 50 Hz at an ambient temperature of (20 to 30) ° C and a relative humidity of ≤ 85%. Under the sine wave test voltage for 1 min, there should be no breakdown or arcing. 5.3.3 Power Requirements The monitoring system should be equipped with a regulated power supply to ensure that the power supply meets AC (220 ± 22) V or (380 ± 38) V, (50 ± 1) Hz requirements. 5.3.4 Other requirements The airtightness of units and pipelines with flammable gases and toxic gases shall meet the requirements of GB/T 30431, ie 0.3 MPa. Next, the pressure drop of 30 min is not more than 0.01 MPa to ensure that it will not leak. The high temperature heating zone of the instrument shall be provided with an anti-scald mark. 5.4 Functional requirements 5.4.1 Sample Collection Unit 5.4.1.1 The sample collection unit can adopt the sampling manifold that meets the requirements of HJ 654, or directly adopt the independent requirements. Pipeline. When using a multi-branch sampling manifold, the sampling branch of volatile organic compounds should be located at the forefront of the sampling manifold. Sampling tube The route should be as short as possible to reduce the adsorption of the target compound. 5.4.1.2 The materials for the sampling pipelines, valves and connecting parts shall be selected so as not to release interfering substances and not with the target compound. A chemical reaction material such as polytetrafluoroethylene, borosilicate glass or stainless steel. If you use stainless steel, you need to enter Inertialization. 5.4.1.3 The sampling pipeline should be equipped with a heating device. The heating temperature is generally controlled at (30 ° C ~ 50 ° C) to avoid the inner wall of the sampling pipeline. Condensation. 5.4.1.4 A PTFE membrane with a pore size of ≤ 5 μm should be installed to remove particulate matter from the air. 5.4.1.5 Sampling shall be carried out at a steady flow rate, and the cumulative sampling time per hour shall be not less than 30 min. 5.4.2 Quality Control Unit The quality control unit of the monitoring system is used for periodic verification and calibration. Should have an automatic verification function to achieve volatile organic compounds Periodic automatic verification of components, and frequency can be set. With manual and/or automatic calibration function, flame ionization detector should Calibration by external standard method, mass spectrometer should be calibrated by internal standard method. 45.4.3 Air source unit According to the needs of the monitoring system, it is equipped with high-purity nitrogen, helium, hydrogen, air and other gas sources. Gas source into the analysis unit A hydrocarbon removal unit is required before. The air tightness requirement is 5.3.4. 5.4.4 Analysis unit 5.4.4.1 Enrichment module Enrichment and concentration of volatile organic compounds to be measured, and simultaneous removal of water, CO2 and other interferences, And can achieve rapid thermal analysis. 5.4.4.2 Gas chromatography enables efficient separation of target compounds. 5.4.4.3 The detector responds well and stably to the target compound and meets the requirements of GB/T 30431 and GB/T 33864. Such as The hydrogen-containing flame ionization detector should be able to judge the working state of the detector and have a flameout auto-ignition function. Such as equipped with mass spectrometry The detector should have full scan/select ion scan, automatic/manual tuning, library search and other functions. 5.4.4.4 has a reference analysis method and can be edited. 5.4.4.5 It has the function of recording the flow, temperature, pressure, chromatogram and measurement concentration during the working process, which can automatically Identify chromatographic peaks, peak heights and peak areas can be automatically calculated in batches. 5.4.5 Data Acquisition and Transmission Unit 5.4.5.1 Software with Chinese interface data acquisition and transmission. 5.4.5.2 Real-time acquisition, storage and calculation of monitoring data, which can output data with 1 h time resolution. The output should be able to Set to the concentration in the standard state or the concentration in the reference state and enable switching between the two states; with mass concentration and Volume concentration unit switching function, the mass concentration unit is μg/m3, and the volume concentration unit is nmol/mol. Minimum display unit 0.01 Gg/m3 or 0.01 nmol/mol. 5.4.5.3 With network access function, it can transmit data and charts at regular intervals. The transmission protocol shall comply with the requirements of HJ 212. 5.4.5.4 It is possible to display the monitoring data and working status parameters of each target compound in real time, and set conditional query and display history. Historical data. 5.4.5.5 It is able to record and store data for more than half a year, with historical data query and export functions. Automatically protect after power failure Save data. 5.4.6 Other requirements 5.4.6.1 has the function of displaying and setting the system time. 5.4.6.2 The monitoring system restarts after being stopped under normal conditions, and the time required to meet the technical requirements is less than 6 hours.6 Performance indicators6.1 Measurement range The determination component should include at least 57 volatile organic compounds, and 57 components are listed in Appendix A. The highest concentration of each component is not low At 50 nmol/mol. 56.2 Standard curve The standard curve correlation coefficient of the target compound is ≥ 0.98. The lowest point concentration was calculated using a standard curve, and the relative error between the measured average value and the standard value was ≤ 15%. 6.3 Zero noise The zero noise of each component instrument is ≤0.05 nmol/mol. 6.4 Method detection limit The detection limit of 90% of the components (including at least ethane and ethylene) is ≤0.1 nmol/mol. 6.5 Accuracy Accuracy of each component. ±10%. 6.6 Precision The precision of each component is ≤10%. 6.7 Resolution Resolution of cyclopentane and isopentane, resolution of 2,3-dimethylpentane and 2-methylhexane, and o-xylene and styrene The resolution is above 1.0. 6.8 24 h concentration drift The 24 h concentration drift of 10 nmol/mol does not exceed ±1 nmol/mol. 6.9 Long-term concentration drift, retention time drift Continuous operation for 30 d, the concentration drift of the component detected by the hydrogen flame ion detector is ≤15%; the mass spectrometer detects the concentration of the component Degree drift ≤ 30%; retention time drift ≤ 0.5 min. 6.10 Effective data rate The monitoring instrument was continuously operated for 30 days, and the effective data rate was ≥80%. 6.11 Instrument Parallelism The instrument parallelism of each component is ≤ 20%. 6.12 Clock error The instrument is tested for 6 h under normal working conditions with a clock error of ±20 s. The instrument industrial machine is powered off for a total of 3 times (the duration of each power failure is 20 s, 2 min and 20 min, respectively, and each time The power supply should be guaranteed for not less than 10 min between power failures, and tested for 6 h with a clock error of less than 2 min. 66.13 System residue The system residual concentration of 90% component is ≤0.1 nmol/mol.7 Detection methods7.1 General requirements 7.1.1 Extract at least 2 sets of instruments of the same type to be tested simultaneously at the designated laboratory site, and test the knot of each instrument. For evaluation. 7.1.2 The default operating method is selected for each type of instrument test. This method meets the requirements of 5.4.1.5 and 5.4.5.2. 7.1.3 If the test is interrupted due to power supply problems, after the power supply returns to normal, continue to test, the completed test Indicators and data are valid. 7.1.4 If the test is interrupted due to instrument failure, restart the test after the instrument returns to normal; during the test, each set The number of instrument failures is ≤2 times. 7.1.5 The test data of each technical indicator is the final result stored by the instrument data acquisition and processing unit. 7.2 Standard substance requirements 7.2.1 Standard gas. contains 57 volatile organic compounds. Standard gas produced for certified standard gases or qualified units. In this standard, the target compounds are evaluated as 57 volatile organic compounds, unless otherwise stated. 7.2.2 Internal standard gas. The components are monobromochloromethane, 1,4-difluorobenzene, chlorobenzene-d5, 1-bromo-4fluorobenzene. For use Monitoring system for mass spectrometry detectors. 7.3 standard curve Under the normal working condition of the instrument, the labels of 0.5, 2, 4, 6, 8, 10 nmol/mol are sequentially introduced from low concentration to high concentration. Quasi-gas injection analysis, each concentration is analyzed at least 3 times. Flame ionization detector adopts external standard method, target compound concentration For the abscissa, the peak area (or peak height) of the target compound is plotted on the ordinate, and the standard curve is drawn by least squares; mass spectrometry The internal standard method is adopted, the concentration ratio of the target compound and the internal standard is the abscissa, and the response ratio of the target compound to the internal standard is vertical. Coordinates, the standard curve is drawn by least squares method. Calculate the standard curve correlation coefficient of the target compound using a standard curve Calculate the lowest point concentration, calculate the relative error between the measured average value and the standard value according to formula (1), and should meet the requirements of 6.2. 0× Ltest CC (1) Where. d--the relative error between the mean value of the lowest concentration point and the standard value, %; Test - the lowest concentration point to measure the concentration average, nmol/mol; - the lowest concentration point standard concentration value, nmol/mol. 7.4 Zero noise Under normal working conditions of the instrument, pass high-purity nitrogen or air for analysis, at least 7 consecutive measurements, calculate the test Concentration value measured by the instrument , where i is the number of measurements (i = 1, 2..., n), and the standard deviation of the obtained data is calculated according to formula (2) 7S , that is, the zero noise of the instrument, should meet the requirements of 6.3. ( ) 0 − Rr (2) Where. S -- zero noise, nmol/mol; -- the i-th measurement concentration value, nmol/mol; R--n measured concentration average, nmol/mol; I--the serial number of the recorded data (i=1~n); n--The total number of recorded data. 7.5 Method Detection Limit Under the normal working condition of the instrument, the standard gas with the concentration close to the detection limit is passed for analysis (MDL< standard gas concentration) < 10×MDL, recommended not to be higher than 0.5 nmol/mol), at least 7 consecutive measurements, calculate the concentration value X of the instrument to be tested ,its The middle i is the number of measurements (i = 1, 2..., n), and the standard deviation S of the obtained data is calculated according to the formula (3). ( ) XX (3) Where. S--standard deviation, nmol/mol; -- the i-th measurement concentration value, nmol/mol; --n measured concentration average, nmol/mol; I--the serial number of the recorded data (i=1~n); n--The total number of recorded data. Then calculate the method detection limit MDL according to formula (4), which should meet the requirements of 6.4. MDL=t N-1, 0.99×S (4) 7.6 Accuracy and precision Under normal working conditions of the instrument, a standard gas of 5 nmol/mol is passed for analysis to calculate the components in the instrument to be tested. Monitoring concentration Y Repeat the test at least 7 times for each concentration. Calculate the average measured concentration ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of HJ 1010-2018_English be delivered?Answer: Upon your order, we will start to translate HJ 1010-2018_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. 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