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SN/T 1788-2006 English PDF

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SN/T 1788-2006: Determination of quinizarin. Extraction spectrophotometric method
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PDF similar to SN/T 1788-2006


Standard similar to SN/T 1788-2006

GB 1787   GB/T 2430   GB 1788   SN/T 5564   SN/T 2045   SN/T 3125   

Basic data

Standard ID SN/T 1788-2006 (SN/T1788-2006)
Description (Translated English) Determination of quinizarin. Extraction spectrophotometric method
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard E31
Classification of International Standard 75.160
Word Count Estimation 8,899
Date of Issue 2006-04-25
Date of Implementation 2006-11-15
Quoted Standard GB/T 4756; GB/T 6682; ASTM D4057
Adopted Standard IP 298/92-1998, MOD
Regulation (derived from) Industry Standard Notice 2006 No. 7 (No. 79 overall)
Issuing agency(ies) General Administration of Customs
Summary This standard specifies the identity diesel quinizarine Determination. This standard applies to diesel quinizarine content of 0. 04mg/L ~ 3. 00mg/L measurement.

SN/T 1788-2006: Determination of quinizarin. Extraction spectrophotometric method

---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.
Determination of quinizarin.Extraction spectrophotometric method Book of the People's Republic of China Entry and Exit Inspection and Quarantine Determination of ruthenium by spectrophotometry Released on.2006-04-25 Implementation of.2006-11-15 People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued

Foreword

This standard is modified by IP298/92 (1998) (Determination ofquinizarin-extractionspectrophotometric Method) "Determination of oxime extraction spectrophotometry". There is only an editorial difference from the original standard. Appendix A of this standard is an informative annex. This standard is proposed and managed by the National Certification and Accreditation Administration. This standard was drafted. Guangdong Entry-Exit Inspection and Quarantine Bureau. The main drafters of this standard. Liang Meiqiong, Liang Miaoling, Zheng Jianguo, Guan Difeng. This standard is the first industry standard for entry-exit inspection and quarantine. Determination of ruthenium by spectrophotometry

1 Scope

This standard specifies the method for determining the enthalpy in diesel fuel. This standard applies to the determination of niobium in diesel fuel from 0.04mg/L to 3.00mg/L.

2 Normative references

The terms in the following documents become the terms of this standard by reference to this standard. All dated references, followed by all Modifications (not including errata content) or revisions do not apply to this standard, however, parties to agreements based on this standard are encouraged to study Is it possible to use the latest version of these files? For undated references, the latest edition applies to this standard. GB/T 4756 petroleum liquid manual sampling method GB/T 6682 Analytical laboratory water specifications and test methods ASTMD4057 Manual sampling method for petroleum and petroleum products

3 Principle

The hydrazine is completely separated and concentrated in an alkaline extract, and then subjected to back extraction with decalin. Spectrophotometer The absorbance of the standard solution and the extract can be used to identify and determine the strontium content.

4 reagents

The reagents and water used in this standard use analytical reagents and meet the current standards when no other requirements are specified. Three-stage water is used in the laboratory of GB/T 6682. 4.1 Hydrochloric acid (ρ 1.18 g/mL). 4.2 Toluene. 4.3 Decalin. 4.4 n-butanol. 4.5 Petroleum solvent oil. 4.6 Hydrochloric acid solution (1+1). 4.7 sodium hydroxide solution (50g/L). 4.8 醌茜 Standard sample. The 1,4-dihydroxyindole reagent was recrystallized from toluene (4.2) and dried at 110 ° C for 2 h. 4.9 醌茜 standard solution A. Weigh 1g (accurate to 1mg) 醌茜 standard sample (4.8) dissolved in toluene, and make up to 1L. Take 10mL The solution was diluted with decalin (4.3) to a volume of 1 L and the concentration of this solution was 10 mg/L. 4.10 醌茜 standard solution B. Pipette 10mL 醌茜 standard solution A (4.9) into 40mL 醌茜-free diesel oil, this solution is concentrated The degree is 2 mg/L.

5 instruments

Spectrophotometer.

6 sampling

Samples were taken according to GB/T 4756 or ASTM D4057 and placed in a suitable closed container. Samples cannot be molded Store in the material container.

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