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SN/T 4063-2014 English PDF

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SN/T 4063-2014: Determination of mercury in botanic Chinese medicinal material for export - Direct injection-cold atomic absorption spectroscopy method
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SN/T 4063-2014English419 Add to Cart 4 days [Need to translate] Determination of mercury in botanic Chinese medicinal material for export - Direct injection-cold atomic absorption spectroscopy method Valid SN/T 4063-2014

PDF similar to SN/T 4063-2014


Standard similar to SN/T 4063-2014

GB/T 41907   SN/T 4062   SN/T 4064   SN/T 4061   

Basic data

Standard ID SN/T 4063-2014 (SN/T4063-2014)
Description (Translated English) Determination of mercury in botanic Chinese medicinal material for export - Direct injection-cold atomic absorption spectroscopy method
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard C23
Classification of International Standard 11.120.10
Word Count Estimation 16,173
Date of Issue 12/1/2014
Date of Implementation 5/1/2015
Quoted Standard GB/T 602; GB/T 5330; GB/T 6682
Regulation (derived from) State-Quality-Inspection-accreditation [2014] 614
Issuing agency(ies) General Administration of Customs
Summary This standard specifies the direct injection of plant medicines mercury content - Cold atomic absorption spectrometric method. This standard applies to the determination of the mercury content of ginseng, licorice, Folium, basil leaves, chrysanthemums, sa

SN/T 4063-2014: Determination of mercury in botanic Chinese medicinal material for export - Direct injection-cold atomic absorption spectroscopy method


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(Determination of mercury in medicines vegetable export direct injection - cold vapor atomic absorption spectrometry) People's Republic of China Entry-Exit Inspection and Quarantine Standards Determination of the export of mercury content in Chinese herbal plant Direct Injection - Atomic Absorption Spectrometry Issued on. 2014-11-19 2015-05-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. Please note that some of the content of this document may involve patents. Distribution of this document Institutions do not assume the responsibility to identify these patents. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. Chongqing, People's Republic of China Exit Inspection and Quarantine. The main drafters of this standard. Zhengguo Can, Lixian Liang, Zhu Meiwen, Jing, Zhang Lei, Liu Yi, Chen Jiang, the Tsinghua University. Determination of the export of mercury content in Chinese herbal plant Direct Injection - Atomic Absorption Spectrometry

1 Scope

This standard specifies the direct injection of plant medicines mercury content - Cold atomic absorption spectrometric method. This standard applies to ginseng, licorice, Folium, basil leaves, chrysanthemums, safflower, medlar, hawthorn, ephedra, rugosa, cork, cinnamon and other plant Determination of mercury content in Chinese herbal medicine.

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. Preparation of standard solution of GB/T 602 Determination of impurities in chemical reagents GB/T 5330 industrial woven square hole wire mesh Laboratory use specifications and test methods GB/T 6682 Analysis

3 Method summary

Sample injector by introducing mercury analyzer, and after drying thermal decomposition, decomposition of mercury are reduced to mercury atoms and mercury atoms in the vapor amalgamation Tube subjected to gold amalgamation reaction, after the high temperature was measured at a wavelength of analytical 253.65nm place, according to the standard curve quantification.

4 Reagents and materials

Unless otherwise specified, all reagents superior grade of pure water as a water GB/T 6682 regulations. 4.1 Nitric acid. pure class distinctions. 4.2 10% nitric acid solution. Measure 100mL nitric acid (4.1), diluted with water to 1000mL. 4.3 potassium dichromate. 4.4 potassium dichromate solution (1g/L). Weigh 0.1g potassium dichromate (4.3) dissolved in 100mL of water. 4.5 mercury standard stock solution (1000mg/L). according to GB/T 602 method of preparation, or direct use of certified reference materials. 4.6 Mercury intermediate standard solution (20mg/L). accurate Pipette 2mL mercury standard solution (4.5) in the 100mL flask, add 1mL Potassium dichromate solution (4.4), with a nitric acid solution (4.2) constant volume, mix, stored at room temperature. 4.7 Mercury intermediate standard solution (2.0mg/L). accurate Pipette 10mL mercury intermediate standard solution (4.6) in the 100mL flask, add 1mL potassium dichromate solution (4.4) with water to volume, and mix. This solution mercury 2.0μg/mL (solution when the existing service). 4.8 mercury standard solution. Pipette respectively 0mL, 0.10mL, 0.25mL, 0.50mL, 1.50mL, 2.50mL, 5.00mL, 10.00mL, 15.00mL mercury intermediate standard solution (4.7) and 2.5mL, 5.0mL, 15.0mL, 25.0mL mercury intermediate standard solution (4.6) in two groups 100mL volumetric flask, dilute with water to volume, and mix. In this case corresponds to the standard working solution of mercury concentrations were 0μg/L, 2μg/L, 5μg/L, 10μg/L, 30μg/L, 50μg/L, 100μg/L, 200μg/L, 300μg/L (low level series) and 500μg/L, 1000μg/L, 3000μg/L, 5000μg/L (high levels of series).

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