HJ 38-2017 PDF English
US$125.00 · In stock · Download in 9 secondsHJ 38-2017: Stationary Source Emission - Determination of Total Hydrocarbons, Methane and Nonmethane Hydrocarbons - Gas Chromatography Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid HJ 38: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| HJ 38-2017 | English | 125 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Stationary Source Emission - Determination of Total Hydrocarbons, Methane and Nonmethane Hydrocarbons - Gas Chromatography
| Valid |
| HJ/T 38-1999 | English | 399 |
Add to Cart
|
3 days
|
Stationary source emission - Determination of nonmethane hydrocarbons - Gas chromatography
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: HJ 38-2017
Similar standards HJ/T 40 HJ/T 37 HJ 75 HJ 38-2017: Stationary Source Emission - Determination of Total Hydrocarbons, Methane and Nonmethane Hydrocarbons - Gas Chromatography
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/HJ38-2017
HJ
ENVIRONMENTAL PROTECTION INDUSTRY STANDARD
Replacing HJ/T 38-1999
Stationary Source Emission - Determination of Total
Hydrocarbons, Methane and Nonmethane
Hydrocarbons - Gas Chromatography
Issued on. DECEMBER 29, 2017
Implemented on. APRIL 1, 2018
Issued by. Ministry of Environmental Protection of the People’s Republic
of China
Table of Contents
Announcement of the Ministry of Environmental Protection of the People’s
Republic of China... 3
Foreword... 5
1 Scope... 7
2 Normative References... 7
3 Terms and Definitions... 7
4 Method and Principle... 8
5 Reagents and Materials... 8
6 Instruments and Equipment... 9
7 Sample... 11
8 Analytical Procedures... 12
9 Result Calculation and Expression... 15
10 Precision and Accuracy... 16
11 Quality Assurance and Quality Control... 17
12 Precautions... 18
1 Scope
This Standard specifies the gas chromatography method of determining total
hydrocarbons, methane and nonmethane hydrocarbons in exhaust gas emitted from
stationary sources.
This Standard is applicable to the determination of total hydrocarbons, methane and
nonmethane hydrocarbons in organized emission of exhaust gas from stationary
sources.
When the sample injection volume is 1.0 mL, the detection limits of total hydrocarbons
and methane determined by this method are 0.06 mg/m3 (calculated by methane), and
the lower limits are 0.24 mg/m3 (calculated by methane); the detection limit of
nonmethane hydrocarbons is 0.07 mg/m3 (calculated by carbon), and the lower limit is
0.28 mg/m3 (calculated by carbon).
2 Normative References
This Standard quotes the following documents or clauses in the documents. In terms
of references without a specified date, the valid version applies to this Standard.
GB/T 16157 The Determination of Particulates and Sampling Methods of Gaseous
Pollutants Emitted from Exhaust Gas of Stationary Source
HJ 732 Emission from Stationary Sources - Sampling of Volatile Organic Compounds
- Bags Method
HJ/T 397 Technical Specifications for Emission Monitoring of Stationary Source
3 Terms and Definitions
The following terms and definitions are applicable to this Standard.
3.1 Total Hydrocarbons (THC)
Total hydrocarbons refer to the sum of gaseous organic compounds that respond on
the hydrogen flame ionization detector of the gas chromatograph under the
determination conditions specified in this Standard.
4 Method and Principle
Directly inject gas sample into a gas chromatograph equipped with a hydrogen flame
ionization detector; respectively determine the content of total hydrocarbons and
methane on the total hydrocarbon column and the methane column.
5 Reagents and Materials
Unless it is otherwise specified, analytically pure chemical reagents and distilled water
that meet the national standards shall be used for analysis.
5.1 De-hydrocarbon air. content of total hydrocarbons (oxygen peak included) ≤ 0.40
mg/m3 (calculated by methane); or, determine on the methane column, no other peaks
except the oxygen peak.
5.3 Nitrogen. purity ≥ 99.999%.
5.4 Hydrogen. purity ≥ 99.99%.
5.5 Air. use a purification tube for air purification.
6 Instruments and Equipment
6.1 Sampling container. all-glass syringe, with a volume not less than 100 mL; clean
and dry it, then, save it for later use. The air bag material shall comply with the relevant
stipulations of HJ 732; the volume shall be not less than 1 L; before use, use de-
hydrocarbon air (5.1) to clean it for at least 3 times.
6.3 Sample storage box. with light-proof function.
6.4 Gas chromatograph. equipped with hydrogen flame ionization detector.
6.5 Sample injector. an injection valve with a 1 mL sample quantitative loop, or, a 1 mL
gas-tight glass syringe.
6.6 Chromatographic column
6.7 Sample heating device. the sample can be placed in it and heated to not lower than
120 °C; the temperature control accuracy is ± 5 °C.
7 Sample
7.1 Sample Collection
7.1.1 Collection with air bag
In accordance with Figure 1, connect the sampling device. The determination of the
sampling location, sampling point, sampling frequency and sampling time of exhaust
gas emitted from stationary sources, as well as the determination of exhaust
parameters and the sampling operations shall comply with the relevant stipulations of
GB/T 16157, HJ/T 397 and HJ 732.
7.1.2 Collection with glass syringe
In accordance with Figure 2, connect the sampling device. The determination of the
sampling location, sampling point, sampling frequency and sampling time of exhaust
gas emitted from stationary sources, as well as the determination of exhaust
parameters and the sampling operations shall comply with the relevant stipulations of
GB/T 16157 and HJ/T 397.
7.2 Transportation of Blank Sample
Bring the sampling container filled with de-hydrocarbon air (5.1) to the sampling site.
Send it back to the laboratory for analysis together with the samples collected in the
same batch.
7.3 Sample Storage
The glass syringe for sample collection shall be handled with care to prevent it from
being damaged. Maintain the needle tip downwards and place it in the sample storage
box for storage and transportation.
8 Analytical Procedures
8.1 Reference Conditions of Chromatographic Analysis
8.2 Calibration
8.2.1 Preparation of calibration series
Take a 100 mL glass syringe (beforehand, put in a piece of rigid polytetrafluoroethylene
sheet) or a 1 L air bag as a container.
8.2.2 Draw a calibration curve
From low concentration to high concentration, respectively draw 1.0 mL of the
calibration series (8.2.1); inject it into the gas chromatograph (6.4) to respectively
determine total hydrocarbons and methane. Take the concentration of total
hydrocarbons and methane (μmol/mol) as the x-coordinate; take the corresponding
peak area as the y-coordinate; respectively a calibration curve of total hydrocarbons
and methane.
8.2.3 Standard chromatogram
Under the reference conditions (8.1) of chromatographic analysis provided in this
8.3 Sample Determination
8.3.1 Determination of total hydrocarbons and methane
Take 1.0 mL of the sample to be tested. In accordance with the same operating steps
and analysis conditions as the calibration curve, determine the peak area of total
hydrocarbons and methane in the sample.
8.3.2 Determination of oxygen peak area
Take 1.0 mL of the de-hydrocarbon air (5.1). In accordance with the same operating
steps and analysis conditions as the calibration curve, determine the oxygen peak area
on the total hydrocarbon column.
9 Result Calculation and Expression
9.1 Result Calculation
The mass concentration of total hydrocarbons and methane in the sample shall be
calculated in accordance with Formula (1).
9.2 Result Expression
When the determined result is less than 1 mg/m3, it shall be retained to two decimal
places; when the determined result is greater than or equal to 1 mg/m3, 3 significant
figures shall be retained.
HJ
ENVIRONMENTAL PROTECTION INDUSTRY STANDARD
Replacing HJ/T 38-1999
Stationary Source Emission - Determination of Total
Hydrocarbons, Methane and Nonmethane
Hydrocarbons - Gas Chromatography
Issued on. DECEMBER 29, 2017
Implemented on. APRIL 1, 2018
Issued by. Ministry of Environmental Protection of the People’s Republic
of China
Table of Contents
Announcement of the Ministry of Environmental Protection of the People’s
Republic of China... 3
Foreword... 5
1 Scope... 7
2 Normative References... 7
3 Terms and Definitions... 7
4 Method and Principle... 8
5 Reagents and Materials... 8
6 Instruments and Equipment... 9
7 Sample... 11
8 Analytical Procedures... 12
9 Result Calculation and Expression... 15
10 Precision and Accuracy... 16
11 Quality Assurance and Quality Control... 17
12 Precautions... 18
1 Scope
This Standard specifies the gas chromatography method of determining total
hydrocarbons, methane and nonmethane hydrocarbons in exhaust gas emitted from
stationary sources.
This Standard is applicable to the determination of total hydrocarbons, methane and
nonmethane hydrocarbons in organized emission of exhaust gas from stationary
sources.
When the sample injection volume is 1.0 mL, the detection limits of total hydrocarbons
and methane determined by this method are 0.06 mg/m3 (calculated by methane), and
the lower limits are 0.24 mg/m3 (calculated by methane); the detection limit of
nonmethane hydrocarbons is 0.07 mg/m3 (calculated by carbon), and the lower limit is
0.28 mg/m3 (calculated by carbon).
2 Normative References
This Standard quotes the following documents or clauses in the documents. In terms
of references without a specified date, the valid version applies to this Standard.
GB/T 16157 The Determination of Particulates and Sampling Methods of Gaseous
Pollutants Emitted from Exhaust Gas of Stationary Source
HJ 732 Emission from Stationary Sources - Sampling of Volatile Organic Compounds
- Bags Method
HJ/T 397 Technical Specifications for Emission Monitoring of Stationary Source
3 Terms and Definitions
The following terms and definitions are applicable to this Standard.
3.1 Total Hydrocarbons (THC)
Total hydrocarbons refer to the sum of gaseous organic compounds that respond on
the hydrogen flame ionization detector of the gas chromatograph under the
determination conditions specified in this Standard.
4 Method and Principle
Directly inject gas sample into a gas chromatograph equipped with a hydrogen flame
ionization detector; respectively determine the content of total hydrocarbons and
methane on the total hydrocarbon column and the methane column.
5 Reagents and Materials
Unless it is otherwise specified, analytically pure chemical reagents and distilled water
that meet the national standards shall be used for analysis.
5.1 De-hydrocarbon air. content of total hydrocarbons (oxygen peak included) ≤ 0.40
mg/m3 (calculated by methane); or, determine on the methane column, no other peaks
except the oxygen peak.
5.3 Nitrogen. purity ≥ 99.999%.
5.4 Hydrogen. purity ≥ 99.99%.
5.5 Air. use a purification tube for air purification.
6 Instruments and Equipment
6.1 Sampling container. all-glass syringe, with a volume not less than 100 mL; clean
and dry it, then, save it for later use. The air bag material shall comply with the relevant
stipulations of HJ 732; the volume shall be not less than 1 L; before use, use de-
hydrocarbon air (5.1) to clean it for at least 3 times.
6.3 Sample storage box. with light-proof function.
6.4 Gas chromatograph. equipped with hydrogen flame ionization detector.
6.5 Sample injector. an injection valve with a 1 mL sample quantitative loop, or, a 1 mL
gas-tight glass syringe.
6.6 Chromatographic column
6.7 Sample heating device. the sample can be placed in it and heated to not lower than
120 °C; the temperature control accuracy is ± 5 °C.
7 Sample
7.1 Sample Collection
7.1.1 Collection with air bag
In accordance with Figure 1, connect the sampling device. The determination of the
sampling location, sampling point, sampling frequency and sampling time of exhaust
gas emitted from stationary sources, as well as the determination of exhaust
parameters and the sampling operations shall comply with the relevant stipulations of
GB/T 16157, HJ/T 397 and HJ 732.
7.1.2 Collection with glass syringe
In accordance with Figure 2, connect the sampling device. The determination of the
sampling location, sampling point, sampling frequency and sampling time of exhaust
gas emitted from stationary sources, as well as the determination of exhaust
parameters and the sampling operations shall comply with the relevant stipulations of
GB/T 16157 and HJ/T 397.
7.2 Transportation of Blank Sample
Bring the sampling container filled with de-hydrocarbon air (5.1) to the sampling site.
Send it back to the laboratory for analysis together with the samples collected in the
same batch.
7.3 Sample Storage
The glass syringe for sample collection shall be handled with care to prevent it from
being damaged. Maintain the needle tip downwards and place it in the sample storage
box for storage and transportation.
8 Analytical Procedures
8.1 Reference Conditions of Chromatographic Analysis
8.2 Calibration
8.2.1 Preparation of calibration series
Take a 100 mL glass syringe (beforehand, put in a piece of rigid polytetrafluoroethylene
sheet) or a 1 L air bag as a container.
8.2.2 Draw a calibration curve
From low concentration to high concentration, respectively draw 1.0 mL of the
calibration series (8.2.1); inject it into the gas chromatograph (6.4) to respectively
determine total hydrocarbons and methane. Take the concentration of total
hydrocarbons and methane (μmol/mol) as the x-coordinate; take the corresponding
peak area as the y-coordinate; respectively a calibration curve of total hydrocarbons
and methane.
8.2.3 Standard chromatogram
Under the reference conditions (8.1) of chromatographic analysis provided in this
8.3 Sample Determination
8.3.1 Determination of total hydrocarbons and methane
Take 1.0 mL of the sample to be tested. In accordance with the same operating steps
and analysis conditions as the calibration curve, determine the peak area of total
hydrocarbons and methane in the sample.
8.3.2 Determination of oxygen peak area
Take 1.0 mL of the de-hydrocarbon air (5.1). In accordance with the same operating
steps and analysis conditions as the calibration curve, determine the oxygen peak area
on the total hydrocarbon column.
9 Result Calculation and Expression
9.1 Result Calculation
The mass concentration of total hydrocarbons and methane in the sample shall be
calculated in accordance with Formula (1).
9.2 Result Expression
When the determined result is less than 1 mg/m3, it shall be retained to two decimal
places; when the determined result is greater than or equal to 1 mg/m3, 3 significant
figures shall be retained.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of HJ 38-2017 be delivered?Answer: The full copy PDF of English version of HJ 38-2017 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of HJ 38-2017_English with my colleagues?Answer: Yes. The purchased PDF of HJ 38-2017_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- HJ 38-2017 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. Question 5: Should I purchase the latest version HJ 38-2017?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version HJ 38-2017 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. How to buy and download a true PDF of English version of HJ 38-2017?A step-by-step guide to download PDF of HJ 38-2017_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "HJ 38-2017".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9
|