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SN/T 0838.2-2015 English PDF

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SN/T 0838.2-2015: Determination of cobalt in boric acid and borax for import and export - Flame atomic absorption spectrometry
Status: Valid

SN/T 0838.2: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
SN/T 0838.2-2015English139 Add to Cart 3 days [Need to translate] Determination of cobalt in boric acid and borax for import and export - Flame atomic absorption spectrometry Valid SN/T 0838.2-2015
SN/T 0838.2-1999English239 Add to Cart 2 days [Need to translate] Boric acid and borax for export. Determination of cobalt content Obsolete SN/T 0838.2-1999

PDF similar to SN/T 0838.2-2015


Standard similar to SN/T 0838.2-2015

GB/T 337.2   GB/T 534   GB/T 210.2   SN/T 0838.3   SN/T 0838.4   SN/T 0838.1   

Basic data

Standard ID SN/T 0838.2-2015 (SN/T0838.2-2015)
Description (Translated English) Determination of cobalt in boric acid and borax for import and export - Flame atomic absorption spectrometry
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard G11
Classification of International Standard 71.040.30
Word Count Estimation 6,644
Date of Issue 2015-05-26
Date of Implementation 2016-01-01
Older Standard (superseded by this standard) SN/T 0838.2-1999
Quoted Standard GB/T 6682
Regulation (derived from) State Quality-Inspection-accreditation [2015] No.224
Issuing agency(ies) General Administration of Customs
Summary This standard specifies the flame atomic absorption spectrophotometry boric acid and borax in cobalt content approach. This standard applies to the determination of the import and export of boric acid and borax in cobalt content was measured in the range of 0.20 mg/kg ~ 75.00 mg/kg.

SN/T 0838.2-2015: Determination of cobalt in boric acid and borax for import and export - Flame atomic absorption spectrometry


---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.
(Import and export of boric acid and borax in the determination of cobalt content - Flame atomic absorption spectrophotometry) People's Republic of China Entry-Exit Inspection and Quarantine Standards Instead of the SN/T 0838.2-1999 Determination of cobalt content import and export of boric acid and borax Flame atomic absorption spectrophotometry Issued on. 2015-05-26 2016-01-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

SN/T 0838 is divided into five sections. --- SN/T 0838.1-2015 import and export of boric acid and borax Determination of chromium content - Flame atomic absorption spectrophotometry; --- SN/T 0838.3-2015 import and export of boric acid and borax Determination of nickel content - Flame atomic absorption spectrophotometry; --- SN/T 0838.4-2015 import and export of boric acid and borax Determination of manganese content - Flame atomic absorption spectrophotometry; --- SN/T 0838.5-2015 import and export of boric acid and borax copper content determination method of flame atomic absorption spectrophotometry. This section SN/T Section 20838 of. This section drafted in accordance with GB/T 1.1-2009 given rules. The partial replacement of SN/T 0838.2-1999 "export of boric acid and borax Determination of cobalt content." This portion of the SN/T 0838.2- Compared to 1999, the main technical changes are as follows. --- Increased by flame atomic absorption spectrophotometry; --- Remove the normative references in standards for sampling; --- Remove the 3.4 "Sampling" section. This section points proposed and managed by the National Certification and Accreditation Administration Committee. This section was drafted by. People's Republic of China Jilin Exit Inspection and Quarantine. The main drafters of this section. Lu Chun-Mei, Ma Shumin, Jiang Yongli, Yang Fan, Handa Chuan, Zhao Yun-hui, Liu Yang, Ting-Ting Hu. This part of the standard replaces the previous editions are. --- SN/T 0838.2-1999. Determination of cobalt content import and export of boric acid and borax Flame atomic absorption spectrophotometry

1 Scope

SN/T 0838 provisions of this part of the flame atomic absorption spectrophotometry boric acid and borax in cobalt content approach. This section applies to the determination of the import and export of boric acid and borax in cobalt content was measured in the range of 0.20mg/kg ~ 75.00mg/kg.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Laboratory use specifications and test methods GB/T 6682 Analysis

3 Method summary

The sample was 2% nitric acid dissolved in a boiling water bath in nitric acid medium by atomic absorption spectrophotometer at a wavelength of 240.7nm Department to Air - acetylene flame measured absorbance of cobalt.

4 Reagents and materials

Unless otherwise indicated, only recognized as a superior grade pure steamed or acid-treated chemical reagent system, water for the two water GB/T 6682 regulations. 4.1 nitric acid (ρ = 1.4g/mL). 4.2 2% nitric acid solution. Apply nitric acid (4.1) and water were mixed volume ratio of 2.98. 4.3 cobalt standard stock solution. concentration of 1000μg/mL, using commercially available certified cobalt standard solution. 4.4 cobalt standard working solution. accurate Pipette the appropriate amount of cobalt standard stock solution (4.3) with 2% nitric acid solution (4.2) by serial dilution, the concentration of the solution Of 10μg/mL. 5. Apparatus 5.1 Atomic absorption spectrophotometer. with cobalt hollow cathode lamp, working conditions, see Appendix A. 5.2 Analysis of balance. a sense of the amount of 0.1mg. 5.3 flask. 50mL, 100mL. 5.4 tube. 25mL. Pipette 5.5. 1mL, 5mL, 10mL.

6 measuring step

6.1 blank test Along with the test sample blank.

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