GB/T 3049-2006 PDF English
US$105.00 · In stock · Download in 9 secondsGB/T 3049-2006: Chemical products for industrial use - General method for determination of iron content. 1, 10-Phenanthroline spectrophotometric method 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 3049: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 3049-2006 | English | 105 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Chemical products for industrial use - General method for determination of iron content. 1, 10-Phenanthroline spectrophotometric method
| Valid |
| GB/T 3049-1986 | English | 479 |
Add to Cart
|
4 days
|
Chemical products for industrial use--General method for determination of iron content--0-phenanthroline spectrophotometric method
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 3049-2006
GB/T 3049-2006: Chemical products for industrial use - General method for determination of iron content. 1, 10-Phenanthroline spectrophotometric method
---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/GBT3049-2006
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.040.40
G 10
GB/T 3049-2006 / ISO 6685:1982
Replacing GB/T 3049-1986
Chemical products for industrial use - General method
for determination of iron content - 1, 10-
Phenanthroline spectrophotometric method
(ISO 6685:1982, IDT)
ISSUED ON: DECEMBER 29, 2006
IMPLEMENTED ON: JUNE 01, 2007
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of the PRC;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Field of application ... 5
3 Principle ... 5
4 Reagents ... 6
5 Apparatus ... 7
6 Procedure ... 7
7 Expression of results ... 9
8 Test report ... 10
Annex A (Informative) Interferences ... 11
Foreword
This Standard is identical to the international standard ISO 6685:1982
"Chemical products for industrial use - General method for determination of iron
content - 1, 10-Phenanthroline spectrophotometric method".
This Standard is identical in technical content to the international standard ISO
6685:1982 (E), but contains the following minor editorial changes:
- Replace the comma "," with a decimal point ".";
- Replace “this International Standard” with “this Standard”;
- CHANGE “Annex” to “Annex A (Informative)”.
This Standard replaces GB/T 3049-1986 "Chemical products for industrial use
- General method for determination of iron content - o-Phenanthroline
spectrophotometric method".
Compared with GB/T 3049-1986, the main changes of this Standard are as
follows:
- The concentration of the reagents used in the test has changed (Clause 3
of the 1986 edition; Clause 4 of this edition);
- Due to changes in reagent concentration, the amount of reagent added has
also changed (Clause 5 of the 1986 edition; Clause 6 of this edition);
- ADD cells with an optical path of 4 cm or 5 cm and delete cells with an
optical path of 0.5 cm and 3 cm (4.2 of the 1986 edition; 5.1 of this edition);
- Specify the color development time to be not less than 15 min (Clause 6 of
this edition);
- According to international standards, delete the non-interfering ions La3+,
Ce3+, Al3+, Th4+, ClO4- , and CO32- in Annex B (Annex B of the 1986 edition;
Clause 2 of this edition);
- Delete the interfering ions S2-, S2O32-, NO2- , MnO4- , Cr3+, and F- and the
corresponding methods for eliminating interference in Annex C and Annex
D (Annex C and Annex D of the 1986 edition; Annex A of this edition);
- ADD methods for eliminating some interfering ions (Annex C and Annex D
of the 1986 edition; Annex A of this edition).
Annex A of this Standard is an informative annex.
This Standard was proposed by China Petroleum and Chemical Industry
Federation.
This Standard shall be under the jurisdiction of Subcommittee 1 on Inorganic
Chemical Industry, National Standardization Technical Committee of Chemical
(SAC/TC 63/SC 1).
Main drafting organizations of this Standard: Tianjin Entry-Exit Inspection and
Quarantine Bureau, Shandong Entry-Exit Inspection and Quarantine Bureau,
Tianjin Chemical Research and Design Institute.
Main drafters of this Standard: Liu Shaocong, Zhao Zuliang, Liu Youruo, Sun
Shujun, Lu Siwei.
The previous editions of the standard replaced by this Standard were released
as follows: GB/T 3049-1986.
Chemical products for industrial use - General method
for determination of iron content - 1, 10-
Phenanthroline spectrophotometric method
1 Scope
This Standard specifies a general 1, 10-phenanthroline spectrophotometric
method for the determination of the iron content of chemical products.
This Standard describes a technique for the determination of the content of iron
in a solution. Reference should be made, for the preparation of the test solution,
to the standard relating to the product to be analysed, which should indicate the
modifications necessary to make the method applicable to that product.
2 Field of application
This Standard is applicable to test solutions from which an aliquot portion can
be taken containing between 10 and 500 μg of Fe in a volume of not more than
60 ml.
Large amounts of alkali metals, calcium, strontium, barium, magnesium,
manganese (II), arsenic (III), arsenic (V), uranium (VI), lead, chloride, bromide,
iodide, thiocyanate, acetate, chlorate, nitrate, sulphate, sulphide, metaborate,
selenate, citrate, tartrate, phosphate and up to 100 mg of germanium (IV), in
the test solution, do not interfere. In the presence of tartrate, citrate, arsenate
or more than 100 mg of phosphate, colour development is, however, liable to
be slower.
Details of certain interferences and means by which they can be overcome are
given in Annex A.
3 Principle
Reduction of all the iron (lll) present in the test solution to iron (ll) with ascorbic
acid. Formation of the orange-red complex between iron (ll) and 1, 10-
phenanthroline at a pH between 2 and 9, and spectrophotometric measurement
of the absorbance of the complex at the wavelength of maximum absorption
(510 nm).
......
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 3049-2006 be delivered?Answer: The full copy PDF of English version of GB/T 3049-2006 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 3049-2006_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 3049-2006_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 3049-2006 -- 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 3049-2006?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 3049-2006 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 3049-2006?A step-by-step guide to download PDF of GB/T 3049-2006_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 3049-2006".
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
|