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HJ 663-2013: Technical regulation for ambient air quality assessment(on trial)
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Basic data | Standard ID | HJ 663-2013 (HJ663-2013) | | Description (Translated English) | Technical regulation for ambient air quality assessment(on trial) | | Sector / Industry | Environmental Protection Industry Standard | | Classification of Chinese Standard | Z15 | | Classification of International Standard | 13.040.20 | | Word Count Estimation | 14,186 | | Quoted Standard | GB 3095-2012; HJ 664-2013; GB/T 8170 | | Regulation (derived from) | Department of Environmental Protection Notice No. 57 of 2013 | | Issuing agency(ies) | Ministry of Ecology and Environment | | Summary | This standard specifies: ambient air quality assessment the scope, evaluation sessions, project evaluation, evaluation methods and data a statistical method for content. This standard applies to: Nationwide ambient air quality assessment and management. | HJ 663-2013: Technical regulation for ambient air quality assessment(on trial)---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.
Technical regulation for ambient air quality assessment(on trial)
National Environmental Protection Standard of the People's Republic
Technical Specifications for Environmental Air Quality Assessment (Trial)
Published on.2013-09-22
2013-10-01 Implementation
Ministry of Environmental Protection released
Content
Foreword..ii
1 Scope..1
2 Normative references..1
3 Terms and Definitions.1
4 Evaluation scope and evaluation project 2
5 Evaluation methods..3
6 Data Statistics Requirements 4
Appendix A (Normative Appendix) Data Statistics Method.6
Appendix B (normative appendix) Spearman rank correlation coefficient calculation and determination method..9
Appendix C (informative appendix) Method for comparative assessment of ambient air quality conditions 10
Foreword
To implement the Environmental Protection Law of the People's Republic of China and the Law of the People's Republic of China on the Prevention and Control of Atmospheric Pollution
Management of air quality, protection and improvement of the ecological environment, protection of human health, standardization of environmental air quality assessment, protection
This standard is formulated to demonstrate the uniformity and comparability of environmental air quality assessment results.
This standard specifies the scope of the ambient air quality assessment, evaluation period, evaluation items, evaluation methods and statistical data.
Law and other content.
Appendix A and Appendix B of this standard are normative appendices, and Appendix C is an informative appendix.
This standard is the first release and will be revised in a timely manner in accordance with the state's economic and social development and environmental protection requirements.
This standard was formulated by the Science and Technology Standards Department of the Ministry of Environmental Protection.
This standard is mainly drafted by. China Environmental Monitoring Center, Shenyang Environmental Monitoring Center Station.
This standard was approved by the Ministry of Environmental Protection on September 22,.2013.
This standard was implemented on October 1,.2013.
This standard is explained by the Ministry of Environmental Protection.
Technical Specifications for Environmental Air Quality Assessment (Trial)
1 Scope of application
This standard specifies the scope of environmental air quality assessment, evaluation period, evaluation items, evaluation methods and statistical data.
Law and other content.
This standard applies to the assessment and management of ambient air quality throughout the country.
2 Normative references
This standard refers to the following documents or their terms. For undated references, the latest edition applies to this
standard.
GB 3095-2012 Ambient Air Quality Standard
HJ 664-2013 Technical Specifications for Environmental Air Quality Monitoring Sites
GB/T 8170 Numerical Rounding Rules and Representation and Determination of Limit Values
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
Ambient air quality assessment
Based on GB 3095-2012, the process of qualitative or quantitative evaluation of ambient air quality in a certain spatial range,
Judging the compliance of environmental air quality, trend analysis and air quality.
3.2
Ambient air quality assessment for single station
The indicator evaluates the ambient air quality of the spatial extent represented by a monitoring point. Monitoring points include city points, regional points,
Background points, pollution monitoring points, and roadside traffic points.
3.3
Ambient air quality assessment for urban
Pointer to the assessment of ambient air quality in the urban built-up area. For prefecture-level and above cities, the evaluation adopts the national environment
Urban air quality assessment city point in the gas quality monitoring network (referred to as “national control city point”). For county-level cities, evaluation is adopted
Air quality assessment city points in local monitoring networks. The assessment of ambient air quality in different functional areas of the city can be implemented by reference.
3.4
Ambient air quality assessment for regions
Pointer to ambient air quality assessment of a range of contiguous spaces consisting of multiple cities, including urban built-up areas
Air quality assessment and ambient air quality in non-urban built-up areas (rural areas and Category 1 in GB 3095-2012)
Status evaluation. Among them, the urban built-up area evaluation uses the ambient air quality evaluation city point for evaluation, and the non-urban built-up area evaluation
The ambient air quality assessment area is used for evaluation.
3.5
Attainment of the ambient air quality standards
The evaluation result of pollutant concentration meets the requirements of GB 3095-2012 and this standard, which is the standard. All pollutant concentrations
To achieve the standard, the ambient air quality is up to standard.
3.6
Exceeded multiples
The concentration of pollutants exceeds the multiple of the concentration limit corresponding to the average time in GB 3095-2012.
3.7
Non-exceedence probability
Refers to the percentage of short-term evaluation (hour evaluation, daily evaluation) of pollutants in a certain period of time.
4 Evaluation scope and evaluation project
4.1 Evaluation scope
The evaluation scope includes points, cities and regions. According to the evaluation scope, the ambient air quality assessment is divided into single points.
Air quality assessment, urban environmental air quality assessment and regional ambient air quality assessment.
4.2 Evaluation project
4.2.1 Evaluation projects are divided into basic evaluation projects and other evaluation projects.
4.2.2 Basic evaluation items include sulfur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO), ozone (O3),
There are 6 items of inhalable particulate matter (PM10) and fine particulate matter (PM2.5). The evaluation indicators for each item are shown in Table 1.
4.2.3 Other evaluation items include total suspended particulate matter (TSP), nitrogen oxides (NOX), lead (Pb) and benzo[a]pyrene (BaP)
A total of 4 items. The evaluation indicators for each item are shown in Table 2.
Table 1 Basic evaluation items and average time
Evaluation period evaluation item and average time
Hourly evaluation of 1-hour average of SO2, NO2, CO, O3
The 24-hour average of SO2, NO2, PM10, PM2.5, and CO, and the maximum 8-hour average of O3 were evaluated daily.
Annual evaluation
SO2 annual average, SO2 24-hour average 98th percentile
NO2 annual average, NO2 24-hour average 98th percentile
PM10 average, PM10 24-hour average 95th percentile
PM2.5 annual average, PM2.5 24-hour average 95th percentile
CO 24 hour average 95th percentile
90th percentile of the maximum 8-hour moving average on O3
Table 2 Other evaluation items and average time
Evaluation period evaluation item and average time
Daily evaluation of TSP, BaP, NOx 24-hour average
Quarterly evaluation of the average season of Pb
Annual evaluation
TSP annual average, TSP 24-hour average 95th percentile.
Pb annual average
BaP annual average
NOx annual average, NOx 24-hour average 98th percentile.
5 Evaluation methods
5.1 Status evaluation
5.1.1 Single item evaluation
5.1.1.1 Single-item evaluation is applicable to basic evaluation items and other evaluations for different evaluation periods in a single point, city and region.
The project's compliance status is evaluated.
5.1.1.2 Single point ambient air quality assessment. based on the concentration limit of pollutants in GB 3095-2012, on Table 1 and
The evaluation indicators of each evaluation item in Table 2 are judged as to the compliance status, and the over-standard evaluation items are calculated to exceed the standard multiple. Contaminant
The annual evaluation standard means that the annual average concentration of the pollutants (except CO and O3) and the specific percentile concentration meet the standard at the same time.
When conducting the annual evaluation, the daily evaluation rate is also counted. See Appendix A for data statistics.
5.1.1.3 Urban environmental air quality assessment is based on the evaluation of the urban built-up area. The evaluation method is the same as 5.1.1.2, but it needs to be
The city-scale pollutant concentration data is used for evaluation. The data statistics method is shown in Appendix A.
5.1.1.4 Regional environmental air quality assessment includes ambient air quality within urban built-up and non-urban built-up areas
Status evaluation. The regional ambient air quality standard is the standard for all urban built-up areas within the regional scope and each of the non-urban built-up areas.
The air quality assessment area points are up to standard, and any urban built-up area or regional point exceeds the standard, that is, the area is considered to be exceeding the standard. statistical methods
See Appendix A.
5.1.2 Comprehensive evaluation of multi-projects
5.1.2.1 Multi-project comprehensive evaluation is applicable to all basic evaluation items of different evaluation periods in a single point, city and region.
Comprehensive analysis of the situation.
5.1.2.2 Multi-project comprehensive evaluation compliance means that all basic evaluation items within the evaluation period are up to standard. The conclusion of multi-item comprehensive evaluation
These include. air quality compliance, excess pollutants and multiples (in order of size). Annual evaluation
At the same time, the statistical day comprehensive evaluation of the number of days and compliance rate, as well as the daily evaluation of the pollutants and the compliance rate.
5.2 Evaluation of change trend
5.2.1 Trend assessment is applicable to the evaluation of pollutant concentrations or ambient air quality in a number of consecutive time periods.
The trend within the trend was evaluated by the Spearman rank correlation coefficient method. National change trend assessment
Based on the monitoring network monitoring data, the evaluation time period is generally 5 years, and the trend evaluation result is an upward trend and a downward trend.
There is no change in potential or basic, and the rate of change in ambient air quality over a five-year period is evaluated. Provincial level and below and other time periods
The change trend evaluation can be referred to the execution.
5.2.2 See Appendix B for the calculation and determination method of Spearman rank correlation coefficient.
6 Data statistics requirements
6.1 Validation of data statistics
6.1.1 The statistical validity requirements of each evaluation item shall be implemented in accordance with the relevant provisions of GB 3095-2012.
6.1.2 The maximum effective validity of the maximum 8 hours on the O3 day of the natural day is defined as at least 14 valid 8.00 to 24.00 on the day 8
Hourly average concentration value. When 14 valid data are not met, if the maximum 8-hour average concentration exceeds the concentration limit standard
When the statistics are still valid.
6.1.3 The validity of the specified maximum percentile of the maximum 8 hour average on O3 date during the calendar year is at least 324 for the calendar year.
Maximum 8 hour average on O3 day, at least 27 O3 days maximum 8 hour average (at least 25 O3 in February)
The maximum daily average of 8 hours).
6.1.3 The validity of the specific percentile statistics for the daily average values of SO2, NO2, PM10, PM2.5, and CO during the calendar year is
There are at least 324 daily averages in the calendar year and at least 27 daily averages (at least 25 daily averages in February).
6.1.4 When statistically evaluating the city-scale concentration of the project, all effectively monitored urban points must participate in statistics and evaluation.
The number of effective monitoring points shall not be less than 75% of the total number of city points (when the total quantity is less than 4, not less than 50%).
6.1.5 When the above validity provisions are not met, the statistical results of the statistical indicators are invalid.
6.2 Data Statistics Integrity Requirements
In the multi-project comprehensive evaluation, all basic evaluation projects must participate in the evaluation. When the measured evaluation items are all up to standard but
When there is a project that is missing or does not meet the requirements for statistical validity of the data, the comprehensive evaluation shall be processed according to the non-compliance and the project shall be indicated. When
When there is a non-compliance in the evaluation and evaluation items, the comprehensive evaluation shall be processed according to the non-compliance, regardless of whether there is a missing item.
6.3 Data Rounding Requirements
Before the current status evaluation and change trend evaluation, the statistical results of each pollutant project are in accordance with the rules in GB/T 8170.
For the repair, the concentration unit and the number of reserved decimal places are shown in Table 3. The hourly concentration value of the pollutant is used as the basic data unit.
The contract should also be made before use.
Table 3 Concentration units of contaminants and requirements for retained decimal places
Contaminant units retain decimal places
SO2, NO2, PM10, PM2.5, O3, TSP and NOX μg/m3
CO mg/cubic meter 1
Pb micrograms/cubic meter 2
BaP micrograms per cubic meter 4
Super multiple/2
Compliance rate % 1
Appendix A
(normative appendix)
Data statistics method
A.1 Statistical method for point concentration of pollutants
In the point environment air quality evaluation, the statistical methods of the evaluation items in each evaluation period are shown in Table A.1.
Table A.1 Statistical methods for point pollutant concentration data
Evaluation project data statistics method
1 hour average
The arithmetic mean of the concentration of pollutants at the point of the hour before the hour of the hour, recorded as the time
The engraved point is 1 hour average. The time scale of a natural hour point is 1 hour average
Recorded as 1.00, 2.00, 3.00, 23.00 and 24.00.
8 hour average
Calculated using the sliding average. For the 8-hour mean of the specified time X, defined as.
8 1-hour averages for X-7, X-6, X-5, X-4, X-3, X-2, X-1, X
The arithmetic mean is called the 8-hour average of X. 24 points in a natural day
The 8-hour average is recorded as 1.00, 2.00, 3.00, 23.00
And 24.00 hours.
8 hours maximum point
average
Point all the 8-hour moving average concentration from 8.00 to 24.00 during a natural day
The maximum value.
The 24-hour average point is the arithmetic mean of the average concentration of each hour in a natural day.
The average of the quarters is the arithmetic mean of the 24-hour average concentration for each calendar season.
The annual average of the points is the arithmetic mean of the 24-hour average concentration for each calendar year.
A.2 Statistical method for urban pollutant concentration
In the urban environmental air quality assessment, the statistical indicators and statistical methods of pollutants in each evaluation period are shown in Table A.2 and Table.
A.3.
Table A.2 Statistical methods for basic evaluation items in different evaluation periods (urban range)
Evaluation period evaluation item statistical method
Hourly evaluation of the hourly average points of the city SO2, NO2, CO, O3
*1 hour average concentration value average
Urban SO2, NO2, CO, PM10, PM2.5
24-hour average
Arithmetic average of *24 hour average concentration values at each point
Value evaluation
The maximum 8-hour average point of the city O3
*Ozone day maximum 8 hour average concentration value
Arithmetic mean
Years of urban SO2, NO2, PM10, PM2.5
24-hour average concentration value of a city during a calendar year
Arithmetic mean
Urban SO2, NO2 24-hour average 98th percentile
Number of digits
City PM10, PM2.5 24-hour average 95th
Quantile
City CO 24 hour average 95th percentile
Annual evaluation
City O3 day maximum 8 hours average 90th percentile
Calculate a calendar year city day according to Appendix A.6
Evaluate the corresponding percentile concentration of the project.
*Note. Point refers to the city point, excluding regional points, background points, pollution monitoring points and roadside traffic points.
Table A.3 Statistical methods for other evaluation items in different evaluation periods (urban range)
Evaluation period evaluation item statistical method
Daily evaluation of the city's 24-hour average of NOX, Bap, TSP
Arithmetic average of *24-hour average concentration values at each point
Quarterly evaluation of the average season of urban Pb
Arithmetic flatness of the city's 24-hour average concentration during the calendar season
Mean, the city's 24-hour average concentration is the value of each point
*The arithmetic mean of the 24-hour average concentration value
Years of urban NOx, Pb, Bap, TSP
24-hour average concentration of the city during a calendar year
Arithmetic mean
Annual evaluation of TSP 24-hour average concentration 95th percentile
Number, NOx 24-hour average concentration 98th
Quantile
Calculate a city TSP for a calendar year according to Appendix A.6.
Corresponding percentile of 24-hour average concentration of NOx
Number concentration.
*Note. Point refers to the city point, excluding regional points, background points, pollution monitoring points and roadside traffic points.
A.3 Regional data statistics method
The evaluation of urban built-up areas in the region is based on the evaluation results of various cities in the region, and the evaluation items and tables A.2 and Table
A.3 is the same, and the compliance status of each city in the region is counted separately. Regional environment carried out by the environmental protection department of the State Council
Air quality assessment, with urban built-up areas at the prefecture level and above as the participating cities. Provincial or prefecture-level environmental authorities
The regional environmental air quality assessment of the line can be used as a participating city in the county.
The air quality assessment of the non-urban built-up areas in the area is calculated by taking the air quality assessment area points as the unit.
The regional ambient air quality standard is the standard for all urban built-up areas within the regional scope and each of the non-urban built-up areas.
The points are up to standard.
A.4 Superstandard multiple calculation method
The excess multiple of the over-standard item i is calculated according to the formula (A.1).
( ) iiii SSCB/−= (A.1)
In the formula.
iB -- indicates the excess multiple of the excess item i;
iC - the concentration value of the item i exceeding the standard;
iS -- the concentration limit standard for exceeding the standard i, the first-level concentration limit standard is adopted for the first-class zone, and the second-class concentration is adopted for the second-class zone.
Degree limit standard.
In the annual evaluation, for the SO2, NO2, PM10, and PM2.5, calculate the annual average concentration and the 24-hour average.
The specific percentile concentration is a multiple of the annual average and the daily average; for O3, the maximum daily calculation is 8
Time-averaged specific percentile concentration relative to the 8-hour average concentration limit standard exceeds the standard multiple; for CO, calculation 24
The hourly average specific percentile concentration is a multiple of the concentration limit standard.
A.5 Calculation method of compliance rate
A.5.1 The hourly compliance rate and the daily compliance rate of the evaluation project i are calculated according to formula (A.2).
100)/((%) ×= iii BAD (A.2)
Where. iD -- indicates the compliance rate of the evaluation item i;
iA - the number of days (hours) of the evaluation item i during the evaluation period;
iB -- The number of effective monitoring days (hours) of the evaluation item i during the evaluation period.
A.5.2 The compliance rate of the multi-project day comprehensive evaluation is calculated with reference to formula (A.2).
A.6 Percentile calculation method
The p-th percentile of the contaminant concentration sequence is calculated as follows.
1. Sort the contaminant concentration sequence from small to large, and the sorted concentration sequence is { }niX i ",2,1)( =, .
2. Calculate the ordinal number k of the p-th percentile pm, and the ordinal number k is calculated according to the formula (A.3)
( ) pnk ⋅− = (A.3)
In the formula.
K-- The ordinal number corresponding to the p% position.
N--the number of concentration values in the concentration sequence of pollutants
3. The p-th percentile pm is calculated according to formula (A.4).
( ) ( )( ) ( )skXXXm sssp −×− = 1)( (A.4)
In the formula.
The integer part of s--k, where s is equal to k when k is an integer.
Appendix B
(normative appendix)
Spearman rank correlation coefficient calculation and determination method
B.1 Spearman rank correlation coefficient calculation method
Spearman rank correlation coefficient is calculated according to formula (B.1)
( )∑ −−−= =
Jjs YXnn 1
twenty one(
61γ
(B.1)
In the formula.
sγ-Spearman rank correlation coefficient;
n -- the number of time periods, 5 ≥ n;
jX - the sequence number of the period j sorted by time, nX j ≤ ≤ 1;
jY -- The sequence number of the pollutant concentration in cycle j sorted in ascending order of value, nYj ≤ ≤ 1.
B.2 Change criteria
The absolute value of the calculated rank correlation coefficient is compared with the critical value in Table B.1. If the absolute value of the rank correlation coefficient is greater than the table
The cut-off value indicates that the trend of change is statistically significant. A positive value of γs indicates an upward trend, and a negative value indicates a downward trend. If rank phase
The absolute value of the relationship is less than or equal to the critical value in the table, indicating that there is basically no change.
Table B.1 Spearman rank correlation coefficient γs critical value γ (significance level of one-sided test is 0.05)
n critical value γ n critical value γ
5 0.900 16 0.425
6 0.829 18 0.399
7 0.714 20 0.377
8 0.643 22 0.359
9 0.600 24 0.343
10 0.564 26 0.329
12 0.506 28 0.317
14 0.456 30 0.306
Appendix C
(informative appendix)
Environmental air quality status comparison evaluation method
When environmental management needs to conduct comparative evaluation of annual environmental air quality conditions in different regions,
The multi-project comprehensive evaluation is combined as follows. When conducting monthly and quarterly comparative evaluations, you can refer to the annual evaluation.
C.1 Ambient air quality single item index method
C.1.1 The ambient air quality single item index method is applicable to the comparison of the pollution status of individual pollutants in different regions. At the time of evaluation,
The individual index of pollutant i is calculated according to formula (C.1).
⎟⎟⎠
⎜⎜⎝
⎛=
Di
Per
Di
Ai
Ai
i S
, ,MAX (C.1)
In the formula.
iI - a single index of contaminant i;
aiC, - the annual average concentration value of pollutant i, i includes SO2, NO2, PM10 and PM2.5;
aiS , the secondary standard limit of the annual average value of pollutant i, i includes SO2, NO2, PM10 and PM2.5;
Per
DiC , the specific percentile concentration of the 24-hour average concentration of contaminant i, i including SO2, NO2, PM10,
PM2.5, CO, and O3 (for O3, the specific percentile concentration for the maximum 8 hour mean daily).
diS , the secondary standard for the 24-hour average concentration limit of contaminant i (for O3, the secondary standard for the 8-hour mean
quasi).
C.2 Ambient air quality maximum index method and ambient air quality comprehensive index method
C.2.1 The ambient air quality maximum index method and the ambient air quality comprehensive index method are applicable to multiple pollutants in different regions.
For the comparison of pollution status, the participating projects are all the basic evaluation items in Table 1, which are calculated according to formula (C.2) and formula (C.3).
( )iII MAXmax = (C.2)
( )iII SUMsum = (C.3)
In the formula.
maxI - the maximum index of ambient air quality;
sumI - comprehensive index of ambient air quality;
C.2.2 Comparison of ambient air quality conditions using the ambient air mass maximum index method and the ambient air quality comprehensive index method
At the same time, it is necessary to give a comparison result of the ambient air quality individual index method ...
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