GB/T 24164-2020 PDF English
US$135.00 · In stock · Download in 9 secondsGB/T 24164-2020: Determination of chlorinated benzenes in dye products Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 24164: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 24164-2020 | English | 135 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Determination of chlorinated benzenes in dye products
| Valid |
| GB/T 24164-2009 | English | 479 |
Add to Cart
|
3 days
|
Determination of the content of polychlorinated benzenes in dye products
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 24164-2020
GB/T 24164-2020: Determination of chlorinated benzenes in dye products---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/GBT24164-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.100.01; 87.060.10
G 55
GB/T 24164-2020
Replacing GB/T 24164-2009
Determination of chlorinated benzenes in dye products
Issued on: NOVEMBER 19, 2020
Implemented on: OCTOBER 01, 2021
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Principle of the method... 5
4 Reagents or materials... 5
5 Instruments and equipment... 6
6 Preparation of standard solution... 6
7 Preparation of sample solution... 6
8 Test steps... 7
9 Result calculation... 8
10 Detection limit, precision and accuracy... 9
11 Test report... 9
Annex A (normative) Types of chlorinated benzenes and reference parameters for
determination... 10
Annex B (informative) Chromatogram of chlorinated benzene standards... 11
Foreword
This Standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 24164-2009 “Determination of the content of
polychloriznated benzenes in dye products”. Compared with GB/T 24164-2009, the
main technical changes except editorial modifications are as follows.
- MODIFY the scope of the standard (see Clause 1 of this Standard, Clause 1 of the
2009 edition);
- DELETE the gas chromatography determination method (GC-ECD) (see Clause 4
of the 2009 edition);
- MODIFY the principle of the method (see Clause 3 of this Standard, Clause 3 of
the 2009 edition);
- MODIFY the standard solution preparation method (see Clause 6 of this Standard,
4.3 of the 2009 edition);
- MODIFY the sample solution preparation method (see Clause 7 of this Standard,
4.5.1 of the 2009 edition);
- MODIFY the chromatographic analysis conditions (see 8.1 of this Standard, 4.5.2
of the 2009 version);
- MODIFY the requirements for determination of method accuracy (see 10.3 of this
Standard, 5.2 of the 2009 edition);
- MODIFY the types of chlorinated benzenes (see Annex A of this Standard, Annex
A of the 2009 version).
This Standard was proposed by China Petroleum and Chemical Industry Federation.
This Standard shall be under the jurisdiction of National Technical Committee on
Dyestuff of Standardization Administration of China (SAC/TC 134).
Drafting organizations of this Standard. Jiujiang Fuda Industrial Co., Ltd., Shenyang
Research Institute of Chemical Industry Co., Ltd., Jinhua Shuanghong Chemical Co.,
Ltd., Shaoxing Quality and Technical Supervision and Inspection Institute, China
Chemical Economic and Technological Development Center, Liaoning Ecological
Environmental Protection Science and Technology Center, Transfar Zhilian Co., Ltd.,
Shenyang SYRICI Testing Co., Ltd., National Quality Supervision and Testing Center
for Dyestuff.
Main drafters of this Standard. Xu Weichang, Peng Dexin, Shen Zhongyun, Lv Shuang,
Zhang Guodong, Ji Lanqin, Xue Yan, Zhao Ting, Dai Baoyi, Jin Zhunian, Bao Guofang.
Determination of chlorinated benzenes in dye products
WARNING -- People who use this Standard shall have practical experience in
regular laboratory work. This Standard does not point out all possible safety issues.
Users are responsible for taking appropriate safety and health measures and
ensuring that the conditions specified in relevant national laws and regulations are
met.
1 Scope
This Standard specifies the method for determining the residual amount of 12 kinds of
chlorinated benzenes in dye products by gas chromatography-mass spectrometry
(GC/MS).
This Standard applies to the determination of chlorinated benzenes in various types of
dye products.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 8170-2008 Rules of rounding off for numerical values & expression and
judgement of limiting values
3 Principle of the method
In an ultrasonic bath, dichloromethane is used to extract chlorinated benzene in the
sample, and gas chromatography-mass spectrometry (GC/MS) is used for separation
and determination, and the peak area external standard method is used for quantification.
For the types of chlorinated benzene and reference parameters for determination, see
Annex A.
4 Reagents or materials
4.1 Chlorinated benzene standards (see Annex A).
4.2 Dichloromethane, chromatographic grade.
5 Instruments and equipment
5.1 Gas chromatography-mass spectrometry (GC/MS). with EI source.
5.2 Chromatographic column. 50 % phenylmethylpolysiloxane stationary phase, such
as DB-17MS, 30 m × 0.25 mm × 0.25μm or equivalent.
5.3 Analytical balance. accuracy of 0.01 mg.
5.4 Ultrasonic generator.
5.5 Extractor. stoppered tube, 10 mL.
5.6 Centrifuge. 4000 r/min.
5.7 Nitrogen sample concentrator.
6 Preparation of standard solution
6.1 Chlorinated benzene single standard stock solution (1000 mg/L)
Weigh 10 mg (accurate to 0.01 mg) of the listed standard substances according to Annex
A, dissolve them in dichloromethane and dilute to a 10 mL volumetric flask to prepare
a single standard stock solution. The single standard stock solution is sealed and
refrigerated at below 4 °C, away from light. The volatile components including
chlorobenzene, dichlorobenzene and trichlorobenzene are valid for one week, and the
validity period of other components is one month. It can also directly purchase certified
standard solutions, either chlorinated benzene single standard solution or chlorinated
benzene mixed standard solution.
6.2 Chlorinated benzene mixed standard working solution (50 mg/L)
Pipette 0.5 mL of chlorinated benzene single standard stock solution (6.1) into a 10 mL
volumetric flask and dilute to the mark with dichloromethane.
6.3 Standard working solution
Use chlorinated benzene mixed standard working solution (6.2) to prepare standard
working solution. The appropriate concentration can be prepared according to the
content of the target substance in the sample.
7 Preparation of sample solution
7.1 General
10 Detection limit, precision and accuracy
10.1 Detection limit
Prepare the sample solution according to method A in Clause 7, and the detection limit
of 12 kinds of chlorinated benzenes is 0.01 mg/kg; prepare the sample solution
according to method B, and the detection limit of the method is 0.05 mg/kg.
10.2 Precision
The absolute difference between two independent determination results of the same
object carried out in the same laboratory by the same operator using the same equipment
and according to the same determination method within a short period of time shall not
exceed 20 % of their average value.
10.3 Accuracy
Add an appropriate amount of chlorinated benzene standard solution to 1 g of dye
sample, with a spiked concentration of 1 mg/kg. Operate according to Clause 8, the
recovery rate of various chlorinated benzenes determined shall be between 70 % and
110 %.
11 Test report
The test report shall at least give the following information.
a) sample description;
b) serial number of this Standard;
c) test conditions;
d) method of use;
e) test results;
f) deviation from the standard;
g) test date.
......
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 GB/T 24164-2020 be delivered?Answer: The full copy PDF of English version of GB/T 24164-2020 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 GB/T 24164-2020_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 24164-2020_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 -- GB/T 24164-2020 -- 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 GB/T 24164-2020?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 24164-2020 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 GB/T 24164-2020?A step-by-step guide to download PDF of GB/T 24164-2020_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 "GB/T 24164-2020".
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
|