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SN/T 3912.3-2014 English PDF

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SN/T 3912.3-2014: Determination of mercury content in imported condensate - Direct injection method
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PDF similar to SN/T 3912.3-2014


Standard similar to SN/T 3912.3-2014

SN/T 3077.2   GB/T 3536   GB/T 3535   SN/T 5705   SN/T 3912.2   SN/T 3912.1   

Basic data

Standard ID SN/T 3912.3-2014 (SN/T3912.3-2014)
Description (Translated English) Determination of mercury content in imported condensate - Direct injection method
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard E30
Classification of International Standard 75.080
Word Count Estimation 8,815
Date of Issue 4/9/2014
Date of Implementation 11/1/2014
Quoted Standard GB/T 1884; GB/T 6682; SH/T 0604
Regulation (derived from) State inspection certification (2014) 210
Issuing agency(ies) General Administration of Customs
Summary This standard specifies the method for cold vapor atomic absorption spectrometry import condensate mercury content. This standard applies to the content of condensate oil 0, 1 ng/mL ~ 50 ��g/mL of mercury measured.

SN/T 3912.3-2014: Determination of mercury content in imported condensate - Direct injection method


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(Determination of imported condensate mercury in direct injection method) People's Republic of China Entry-Exit Inspection and Quarantine Standards Determination of imported condensate mercury content Direct Inject Issued on. 2014-04-09 2014-11-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

SN/T 3912 is divided into three parts. --- Part 1. Imported condensate quality evaluation criteria; --- Part 2. Imported condensate in paraffins, olefins, naphthenes and aromatics (PONA) by gas chromatography; --- Part 3. Determination of condensate oil imports of mercury content in the direct injection method. This section SN/T 3912 Part 3. This section drafted in accordance with GB/T 1.1-2009 given rules. This section proposed and managed by the National Certification and Accreditation Administration Committee. This section was drafted by. People's Republic of China Guangdong CIQ. The main drafters of this section. Preface Feng Wu, Shu Bao, Zhang Haifeng, Xie Wei Yan, Zheng Jianguo, Yang Bo. Determination of imported condensate mercury content Direct Inject

1 Scope

SN/T 3912 This section specifies the method of cold atomic absorption spectrometry import condensate mercury content. This section applies to the content of condensate oil 0.1ng/mL ~ Determination of mercury 50μg/mL of.

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. GB/T 1884 Petroleum and liquid petroleum products densitometry (hydrometer method) (GB/T 1884-2000, eqvISO 3675. 1998) GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, mod ISO 3696. 1987) SH/T 0604 crude oil and petroleum products densitometry (U-shaped vibrating tube method) (SH/T 0604-2000, eqvISO 12185. 1996)

3 Method Summary

Sample decomposition furnace thermal decomposition gases produced with the carrier gas entering the catalytic furnace further catalyze the decomposition products of halogen, sulfur Oxides and nitrogen oxides are adsorbed by the adsorbent; mercury vapor into the amalgamator to form gold amalgam trapped; then rapidly heated amalgamator Release mercury vapor into the atomic absorption photometer to detect and measure the absorbance (peak height or peak area) 253.7nm at using working curve method It was quantified.

4 Reagents

Unless otherwise noted, all reagents were of analytical grade. Water for the two water GB/T 6682 regulations. 4.1 mercuric chloride [mercury dichloride (Ⅱ)]. purity 99.999%. 4.2 Additive. aluminum oxide or diatomaceous earth, additives shall not contain mercury. 4.3 nitric acid (ρ = 1.42g/mL). 4.4 nitric acid (ρ = 1.42g/mL). Trace metal levels recommended pure class distinctions or higher purity. 4.5 acetone (ρ = 0.80g/mL). 4.6 Oxygen. purity > 99.9% and does not contain mercury. 4.7 nitric acid (5%). nitric acid (4.4) obtained by dilution water. 4.8 nitric acid (1/1). from nitric acid (4.3) and the preparation of water by volume mixing ratio of 1. 4.9 mercury standard solution (100mg/L). Weigh accurately 0.0677g mercuric chloride (4.1), with 5% nitric acid (4.7) to dissolve and quantitatively transferred to

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