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HJ 1011-2018: Ambient air and stationary source emission - Specifications and test procedures for volatile organic compounds components portable monitoring instrument based on FTIR method
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Ambient air and stationary source emission - Specifications and test procedures for volatile organic compounds components portable monitoring instrument based on FTIR method
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Basic data | Standard ID | HJ 1011-2018 (HJ1011-2018) | | Description (Translated English) | Ambient air and stationary source emission - Specifications and test procedures for volatile organic compounds components portable monitoring instrument based on FTIR method | | Sector / Industry | Environmental Protection Industry Standard | | Classification of Chinese Standard | Z15 | | Word Count Estimation | 18,166 | | 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 1011-2018: Ambient air and stationary source emission - Specifications and test procedures for volatile organic compounds components portable monitoring instrument based on FTIR method
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Ambient air and stationary source emission - Specifications and test procedures for volatile organic compounds components portable monitoring instrument based on FTIR method
National Environmental Protection Standard of the People's Republic
Ambient air and exhaust volatile organic components
Portable Fourier Infrared Monitor technical requirements and
Detection method
Ambient air and stationary source emission-Specifications and test
Procedures for volatile organic compounds components portable
Monitoring instrument based on FTIR method
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 Structure of the instrument... 2
5 Technical requirements...3
6 Performance indicators...5
7 Detection method...6
8 Quality Assurance...12
9 Test items...12
Foreword
To protect the "Environmental Protection Law of the People's Republic of China" and the "Air Pollution Control Law of the People's Republic of China"
Environment, protect human health, regulate ambient air and fixed pollution sources, volatile organic compounds, portable Fourier red
The performance and quality of the external monitor are formulated in accordance with this standard.
This standard specifies the main technical requirements, test items and test items of the portable organic Fourier infrared monitor for volatile organic compounds.
Detection method.
This standard is the first release.
This standard is formulated by the Department of Eco-Environmental Monitoring, the Department of Regulations and Standards of the Ministry of Ecology and Environment.
This standard was drafted. China Environmental Monitoring Station.
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 Ambient air and exhaust gas volatile organic components portable Fourier infrared monitoring
Tester technical requirements and test methods
1 Scope of application
This standard specifies the composition, technical requirements and performance of the portable organic Fourier infrared monitor for volatile organic compounds.
Indicators and test methods.
This standard applies to ambient air and fixed pollution source exhaust volatile organic components portable FT-IR monitor
(hereinafter referred to as "instrument") design, production and testing.
For the instruments used in different occasions, the detection range of the corresponding instrument is specified. For environmental air pollution accident emergency
Instrumentation for monitoring This standard is called Type I instrument and is used to fix the instrument for monitoring the emission of waste gas. This standard is called Type II instrument.
2 Normative references
This standard refers to the following documents or their terms. For undated references, the valid version applies to this
standard.
GB/T 4208 enclosure protection grade (IP code)
GB/T 16157 Determination of particulate matter in fixed pollution source exhaust gas and sampling method of gaseous pollutants
HJ 168 Technical Guidelines for Standardization and Revision of Environmental Monitoring and Analysis Methods
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
Instrument detection limit
The instrument can qualitatively detect the minimum concentration of the substance to be tested from the sample within a given confidence level.
3.2
Quantitative measurement repeatability
Under a set of repetitive measurement conditions, based on the measurement precision of the indication value of the component to be tested, the instrument is continuously measured multiple times.
The same standard substance is expressed based on the relative standard deviation of the indication values of one or more of the components to be tested.
3.3
Parallel instrumentation parallelism
Under the same environmental conditions, the relative standard deviation of the measurement results of the same test object by two sets of the same type of system.
23.4
Response time
From the moment the sample probe is introduced to the standard gas, to the time when the analyzer value reaches 90% of the standard gas nominal value.
The middle interval. Includes pipeline transmission time and meter response time.
4 structure of the instrument
4.1 Overall structural composition of the instrument
The instrument structure mainly includes sample collection and transmission unit, sample pretreatment unit, analysis unit, data acquisition and processing.
Unit, auxiliary equipment, etc. Depending on the instrument's measurement method, the instrument may have all or part of the above structure.
4.2 Sample Collection and Transfer Unit
It mainly includes sampling probe, sample transmission pipeline, flow control equipment and sampling pump. For the specific technical requirements, see 5.1.4.
And 5.2.4.1.
4.3 Sample Pretreatment Unit
It mainly includes sample filtration equipment, etc.; the material and installation of the pretreatment equipment should not affect the instrument measurement, and its specific technology
See 5.2.4.2.
4.4 Analysis unit
It is used to measure and analyze the collected samples. The specific technical requirements are given in 5.2.4.3.
Note. The type of substance that the instrument can analyze depends on the instrument's monitoring substance database.
4.5 Data Acquisition and Processing Unit
Used to collect, process, and store monitoring data, and to transmit monitoring data and device operating status according to central computer commands
Information; specific technical requirements for the data acquisition and processing unit are given in 5.2.4.5.
4.6 Auxiliary equipment
The portable instrument adopts the extraction measurement mode, and its auxiliary equipment mainly includes exhaust gas discharge device, purge purification and its control
System and condensate discharge device.
5 Technical requirements
5.1 Type I Instrument Technical Requirements
5.1.1 General requirements
Same as 5.2.1.
35.1.2 Working conditions
Same as 5.2.2.
5.1.3 Security requirements
Same as 5.2.3.
5.1.4 Functional requirements
In addition to the sample collection and transmission unit heating, insulation and filtration functions, and the sampling pump to overcome the negative pressure function must not be required
In addition, the remaining requirements are the same as 5.2.4. The sample collection and transmission unit has a heating function, and the heating temperature is generally not lower than
120 ° C, and above the sampling pressure of the gas sample water dew point value or hydrocarbon dew point value (whichever is the maximum) 20 ° C or more,
The actual temperature value should be displayed in the instrument.
5.2 Type II instrument technical requirements
5.2.1 Appearance requirements
5.2.1.1 The instrument shall have a nameplate, and the nameplate shall be marked with the name, model number, production unit, factory number, date of manufacture, etc.
information.
5.2.1.2 The surface of the instrument should be intact, no obvious defects, each zero, the parts are connected reliably, and the operation keys and buttons are used.
Flexible and accurate positioning.
5.2.1.3 The instrument panel is clearly displayed, the color is firm, the characters and logos are easy to identify, and there should be no shortage of readings.
trap.
5.2.1.4 The outer casing or cover of the instrument shall be corrosion-resistant, well sealed, dust-proof and rain-proof. The instrument shall at least reach GB/T 4208.
Medium IP55 protection level requirements.
5.2.1.5 The instrument should have good portability and mobility, and the total instrument quality (including sampling and pretreatment equipment) should not exceed
30 kg.
5.2.2 Working conditions
a) Ambient temperature. (0 ~ 40) ° C;
b) Relative humidity. ≤ 85%;
c) Atmospheric pressure. (80 ~ 106) kPa;
d) Supply voltage. AC (220 ± 22) V, (50 ± 1) Hz.
Note. Under special environmental conditions, the configuration of the equipment should meet the requirements of local environmental conditions.
5.2.3 Security requirements
5.2.3.1 Insulation resistance
Insulation of the power terminal of the instrument to the ground or the cabinet under the condition of ambient temperature (15~35) °C and relative humidity ≤ 85%
The resistance is not less than 20 MΩ.
45.2.3.2 Insulation strength
At an ambient temperature of (15 ~ 35) ° C, relative humidity ≤ 85%, the instrument is at 1500 V (RMS), 50 Hz
Under the sine wave test voltage for 1 min, there should be no breakdown or arcing.
The instrument should have a leakage protection device with good grounding measures.
5.2.4 Functional requirements
5.2.4.1 Sample collection and transmission unit requirements
5.2.4.1.1 The sample collection components shall be provided with heating, heat preservation and backflush purification functions. The heating temperature is generally not lower than 120
°C, and above the flue gas temperature of 20 ° C or more, the actual temperature value should be able to display in the instrument. Sample collection components should also be available
Particle filtering function. The front or rear end of the sampling device should have a particulate filter that is easy to replace or clean, and the filter
The material of the filter material should not adsorb and react with gaseous pollutants. The filter should be able to filter at least 5 μm particle size.
The sampling pump should have sufficient pumping capacity to overcome the negative pressure of the flue. The instrument should ensure accurate and reliable sampling flow.
5.2.4.1.2 The material of the sample collection component shall be selected to withstand high temperature, corrosion and non-adsorption, and not against gaseous pollutants.
The materials should not affect the normal measurement of the pollutants to be tested.
5.2.4.1.3 The sample transfer line should be of moderate length. Stable, uniform heating and insulation should be used when using heat tracing lines
Function; its heating temperature is generally not lower than 120 ° C, and higher than the flue gas temperature of 20 ° C or more, the actual temperature value should be able to be in the instrument
Shown in .
5.2.4.1.4 Sample collection and transmission components shall have functional requirements for complete system calibration.
5.2.4.1.5 Sample transfer lines shall use materials that do not adsorb and do not react with gaseous contaminants.
5.2.4.2 Sample pretreatment unit requirements
5.2.4.2.1 Equipment and its components should be easily cleaned and replaced.
5.2.4.2.2 If the dehumidification function is set, it shall be ensured that the dehumidification process of the sample will not cause loss of gaseous pollutants.
5.2.4.2.3 The material of the pretreatment equipment shall be a material that does not adsorb and does not react with gaseous pollutants.
55.2.4.2.4 To prevent particle contamination of the analyzer, it is advisable to set up a fine filter before the gas sample enters the analyzer;
The material of the filter material should not adsorb and react with gaseous pollutants. The filter should be able to filter at least (0.5~1)μm.
Particulate matter of particle size.
5.2.4.3 Analysis unit requirements
5.2.4.3.1 Analysis unit The measuring cell temperature is controlled above 120 °C.
5.2.4.3.2 The function of purging the analyzer with high purity nitrogen should be available.
5.2.4.4 Calibration function requirements
5.2.4.4.1 With manual and/or automatic calibration.
5.2.4.4.2 With external calibration method.
5.2.4.4.3 Instruments with single-point calibration, using component concentrations equal to (within ±10%) pollutant emission limits or
The instrument detects 50% of the standard substance; the instrument with multi-point calibration uses at least one component concentration equal to (±10%)
Standard substances with a pollutant emission limit or 50% of the instrument detection range.
5.2.4.5 Data Acquisition and Processing Unit Requirements
5.2.4.5.1 It shall be possible to display, store and output monitoring data and reports.
5.2.4.5.2 Data values that are at least 10% below their zero point and above the range should be displayed and recorded.
5.2.4.5.3 It has the function of displaying and setting the system time and time label, and the data is the average value of the setting period.
5.2.4.5.4 It has the function of displaying real-time data and querying historical data, and can output in the form of reports or reports.
5.2.4.5.5 It has digital signal output function and data wired/wireless network transmission function.
5.2.4.5.6 Software with Chinese data collection, recording, processing and control.
6 Performance indicators
6.1 Type I instrument performance indicators
6.1.1 Method performance indicators
6.1.1.1 Instrument detection limit
Instrument detection limit. ≤0.5 μmol/mol.
6.1.1.2 Sample blank
The sample blank should be less than the instrument detection limit.
6.1.1.3 Quantitative measurement repeatability
Relative standard deviation. ≤ 5.0%.
66.1.1.4 Linearity error
Linearity error. no more than ±5.0% of full scale.
6.1.1.5 spike recovery rate
The spiked recovery of benzene and toluene should be between 70% and 130%.
6.1.2 Instrument performance indicators
6.1.2.1 Environmental temperature change impact
The ambient temperature varies from (0 to 40) °C, and the change of the measured value of all measured components of the instrument. no more than ±5.0% full
Range.
6.1.2.2 Effect of supply voltage variation
The supply voltage varies by ±10%, and the change of the measured value of all measured components of the instrument. no more than ±2.0% of full scale.
6.1.2.3 Influence of moisture and carbon dioxide
Effects of moisture and carbon dioxide. no more than ±4.0% of full scale.
6.1.2.4 Parallelism between instruments
Two sets of instruments measure the relative standard deviation of the same standard sample. ≤5.0%.
6.1.2.5 Response time
Response time. ≤120 s.
6.2 Type II instrument performance indicators
6.2.1 Method performance indicators
6.2.1.1 Instrument detection limit
Instrument detection limit. ≤0.5 μmol/mol.
6.2.1.2 Sample blank
The sample blank should be less than the instrument detection limit.
6.2.1.3 Quantitative measurement repeatability
Relative standard deviation. ≤ 5.0%.
6.2.1.4 Linearity error
Linearity error. no more than ±5.0% of full scale.
76.2.1.5 spike recovery rate
The spiked recovery of benzene and toluene should be between 70% and 130%.
6.2.2 Instrument performance indicators
6.2.2.1 Effects of changes in ambient temperature
The ambient temperature varies from (0 to 40) °C, and the change of the measured value of all measured components of the instrument. no more than ±5.0% full
Range.
6.2.2.2 Effect of injection flow changes
The injection flow rate changes by ±10%, and the change of the measured value of all measured components of the instrument. no more than ±2.0% of full scale.
6.2.2.3 Effect of supply voltage variation
The supply voltage varies by ±10%, and the change of the measured value of all measured components of the instrument. no more than ±2.0% of full scale.
6.2.2.4 Effect of vibration
After the vibration test according to the specified vibration conditions and frequency, the change of the indication values of all measured components of the instrument. no more than
±2.0% of full scale.
6.2.2.5 Influence of moisture and carbon dioxide
Effects of moisture and carbon dioxide. no more than ±4.0% of full scale.
6.2.2.6 Parallelism between instruments
Two sets of instruments measure the relative standard deviation of the same standard sample. ≤5.0%.
6.2.2.7 Response time
Response time. ≤120 s.
7 Detection methods
7.1 General requirements
7.1.1 At least 2 sets of instruments of the same type shall be taken for simultaneous testing at the designated laboratory site.
7.1.2 Unplanned maintenance, overhaul and adjustment of the instrument are not permitted except during calibration.
7.1.3 If the test is interrupted due to the power supply problem, after the power supply returns to normal, continue the test and the completed test
Test indicators and data are valid.
7.1.4 If the test is interrupted due to instrument failure, after the instrument returns to normal, the test is restarted and the test has been completed.
Test indicators and data are invalidated; during the test, the number of failures per instrument (set) 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.
7.1.6 The instrument detection range of type I instruments is not more than 15 μmol/mol, and the detection range of type II instruments is not more than
8100 μmol/mol.
7.1.7 Type I instruments are selected from methane, ethane, ethylene, propylene, acetylene, benzene, toluene, ethylbenzene and styrene.
The body standard or mixed standard, type II instrument standard gas is selected from benzene series (benzene, toluene, xylene) gas mixed standard.
7.2 Standard substance requirements
7.2.1 Standard gas. Commercially available certified standard gas, uncertainty ≤ 2.0%.
7.2.2 Use zero gas for zero gas, in which hydrocarbons should not be higher than 0.3 mg/m3; lower concentrations of standard gas can be used.
Obtained by high concentration of standard gas dilution.
7.3 Type I and Type II instrument detection methods
7.3.1 Instrument detection limit
The instrument is turned on and the operation method is called up, so that the instrument is in an optimal operating state, and zero gas or hydrocarbon removal near the detection limit is introduced.
The gas spiked sample is continuously measured 7 times after the reading is stable, and the measured concentration value X is recorded.
Where i is the number of measurements (i = 1, 2..., n),
Calculate the standard deviation S of the acquired data according to formula (1)
To S
Recorded as the zero noise of the instrument.
( )
n 2
XX
∑ (1)
Where. S
-- zero noise, μmol/mol (mg/m3);
-- the concentration measured in the i-th injection, μmol/mol (mg/m3);
-- The average concentration of the n injections, μmol/mol (mg/m3);
i -- the serial number of the recorded data (i = 1 ~ 7);
n -- The total number of recorded data (n=7).
Calculate the minimum detection limit of the instrument to be tested according to formula (2).
DL
. The instrument detection limits of Type I and Type II instruments should be separated
Requirements of 6.1.1.1, 6.2.1.1.
03.143DLR S= (2)
Where. R
DL
-- the minimum detection limit of the analytical instrument to be tested, μmol/mol (mg/m3);
-- Zero noise value of the analytical instrument to be tested, μmol/mol (mg/m3);
3.143 -- 7 consecutive injections, t values in the 99% confidence interval.
7.3.2 Sample blank
After the instrument is running to the optimum state, zero or no hydrocarbon air is introduced, and the result of the blank measurement is measured, and the measurement is repeated three times.
The maximum value of the sample blanks of Type I and Type II instruments shall comply with the requirements of 6.1.1.2 and 6.2.1.2, respectively.
7.3.3 Quantitative measurement repeatability
After the instrument to be tested is stable, the calibration gas is passed, and the indication value of all measured components is recorded after the value is stable.
Im
,use
Repeat the above test operation for at least 6 times with the same concentration calibration gas, and calculate the measurement components of the instrument to be tested according to formula (3).
The measurement measures repeatability. The quantitative measurement repeatability of Type I and Type II instruments shall comply with the requirements of 6.1.1.3 and 6.2.1.3, respectively.
9 Quantitative measurement repeatability requires detection of each measurement component.
( )
×=
CC
Mim
Rm
(3)
Where. S
Rm
-- Quantitative measurement repeatability of a measured component of the instrument to be tested, %;
Im
-- the first measurement of the measured component of the calibration gas, μmol/mol (mg/m3);
-- Measure the average value of a measured component of the calibration gas, μmol/mol (mg/m3);
i -- the serial number of the recorded data (i = 1 ~ n);
n -- number of measurements (n ≥ 6).
7.3.4 Linearity error
After the instrument to be tested is stable and calibrated, the concentration is (20%±5%) full scale, (40%±5%)
Range, (60% ± 5%) full scale and (80% ± 5%) full scale standard gas; record stable after each record
The indication value of all the measured components of the concentration standard gas, and then enter the zero gas to wait for the indication value of the instrument to return to zero.
Repeat the above steps 3 times, calculate the measurement error of all measurement components of each concentration standard gas of the instrument to be tested according to formula (4).
Percentage of full scale L
Ei
, type I, type II instruments L
Ei
Maximum value L
Should meet the requirements of 6.1.1.4, 6.2.1.4, respectively.
( )
0×
CC
Sidi
Ei
(4)
Where. L
Ei
-- The analytical instrument to be tested measures the linear error of a measured component of the i-th concentration standard gas, %;
Si
-- the nominal value of the measured component concentration of the i-th concentration standard gas, μmol/mol (mg/m3);
-- The analytical instrument to be tested measures the average of 3 measurements of a measurement component of the i-th concentration standard gas.
Μmol/mol (mg/m3);
i -- measure the standard gas number (i = 1 ~ 4);
R -- the full scale value of a measured component of the analytical instrument to be tested, μmol/mol (mg/m3).
7.3.5 Standard recovery rate
Collect three actual samples, add a certain amount of benzene and toluene standard materials, calculate the spiked recovery rate of the sample, add scalar
It should match the dot concentration in the standard curve. Calculate the spiked recovery of the sample and calculate it in section A.4.2 of HJ 168. Type I,
The spiked recovery rate of Type II instruments shall comply with the requirements of 6.1.1.5 and 6.2.1.5, respectively.
7.3.6 Impact of changes in ambient temperature
a) After the instrument under test is operated in a constant temperature environment, set the temperature to (20 ± 2) ° C, stabilize for at least 30 min, record
Standard temperature value t
, the concentration is (50%±5%) of the range calibration gas, and the indication value of the instrument to be tested is recorded.
b) Slow adjustment (heating rate or cooling rate ≤1 °C/min, the same below) constant temperature ambient temperature (40±2)
°C, stable for at least 30 min, record the standard temperature value t
, respectively, the same concentration of calibration gas is passed, and the tester is recorded.
Indicator value M
c) Slowly adjust the constant temperature environment temperature to (20 ± 2) ° C, stabilize for at least 30 min, record the standard temperature value t
,Minute
Do not pass the same concentration of calibration gas, record the value of the instrument to be tested M
d) Slowly adjust the constant temperature to (0±2) °C, stabilize for at least 30 min, and record the standard temperature value t
,respectively
Pass the same concentration of calibration gas and record the indication value of the instrument to be tested M
e) Slowly adjust the constant temperature environment temperature to (20 ± 2) ° C, stabilize for at least 30 min, record the standard temperature value t
,Minute
Do not pass the same concentration of calibration gas, record the value of the instrument to be tested M
f) Calculate the influence of the ambient temperature change of the analytical instrument to be tested according to formula (5). Ambient temperature of Type I and Type II instruments
The impact of changes should meet the requirements of 6.1.2.1 and 6.2.2.1, respectively.
( ) ( ) ( ) ( ) ( ) ( )
− −
−−
− −
−−
ZMZM
ZM
ZMZM
ZM
St
Or (5)
Where. b
St
-------- The influence of the environmental temperature change of the instrument under test, %;
-------- Ambient temperature t
, the measured value of the calibration gas of the instrument to be tested, μmol/mol (mg/m3);
-------- Ambient temperature t
, the measured value of the calibration gas of the instrument to be tested, μmol/mol (mg/m3);
-------- Ambient temperature t
, the measured value of the calibration gas of the instrument to be tested, μmol/mol (mg/m3);
-------- Ambient temperature t
, the measured value of the calibration gas of the instrument to be tes...
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