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SN/T 4064-2014 English PDF

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SN/T 4064-2014: (Method for determination of export botanical medicines multiple elements)
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SN/T 4064-2014English779 Add to Cart 5 days [Need to translate] (Method for determination of export botanical medicines multiple elements) Valid SN/T 4064-2014

Standard similar to SN/T 4064-2014

SN/T 5268   

Basic data

Standard ID SN/T 4064-2014 (SN/T4064-2014)
Description (Translated English) (Method for determination of export botanical medicines multiple elements)
Sector / Industry Commodity Inspection Standard (Recommended)
Word Count Estimation 30,385
Date of Issue 12/1/2014
Date of Implementation 5/1/2015
Quoted Standard GB/T 602; GB/T 6682
Regulation (derived from) State-Quality-Inspection-accreditation [2014] 614
Issuing agency(ies) General Administration of Customs
Summary This standard specifies the export of plant medicines of lead (Pb), arsenic (As), mercury (Hg), cadmium (Cd), copper (Cu), chromium (Cr), selenium (Se), Nickel (Ni), tin (Sn), zinc (Zn), manganese (Mn), iron (Fe) and other twelve kinds of elements (herein

SN/T 4064-2014: (Method for determination of export botanical medicines multiple elements)

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(Method for determination of export botanical medicines multiple elements) People's Republic of China Entry-Exit Inspection and Quarantine Industry Standard Method for the determination of various elements in the export of plant-based Chinese herbal medicines Released on.2014-11-19 2015-05-01 implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Certification and Accreditation Administration. This standard was drafted. Chongqing Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. The main drafters of this standard. Peng Guangyu, Wang Jing, Liu Yi, Zheng Guocan, Chen Jiang, Xiang Qinghua. Method for the determination of various elements in the export of plant-based Chinese herbal medicines

1 Scope

This standard specifies lead (Pb), arsenic (As), mercury (Hg), cadmium (Cd), copper (Cu), chromium (Cr), selenium (Se), and nickel in exported Chinese herbal medicines. Inductively coupled plasma of twelve elements (12 elements) such as (Ni), tin (Sn), zinc (Zn), manganese (Mn), and iron (Fe) Mass spectrometry (ICP-MS) and inductively coupled plasma optical emission spectroscopy (ICP-AES) assays. This standard applies to the content of the above 12 elements in phytochemicals such as ginseng, cork, perilla leaf, honeysuckle, alfalfa and ephedra. Determination.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. Preparation of standard solution for GB/T 602 chemical reagent impurity determination GB/T 6682 Analytical laboratory water specifications and test methods First method inductively coupled plasma mass spectrometry (ICP-MS)

3 Method summary

Nitric acid-hydrogen peroxide was used as the digestion solution, and the sample was subjected to microwave digestion and then transferred to a constant volume to prepare a sample solution. Inductively coupled plasma The mass spectrometer (ICP-MS) was used to detect the content of Pb, As, Hg, Cd, Cu, Cr, Mn, Fe, Zn, Se, Ni and Sn in the sample solution.

4 reagents and materials

Unless otherwise specified, the reagents used are of excellent grade and the water is the first grade water specified in GB/T 6682. 4.1 Nitric acid. ρ is about 1.4g/mL. 4.2 30% hydrogen peroxide. ρ is about 1.11 g/mL. 4.3 Digestion solution. Take.200 mL of nitric acid (4.1) and 100 mL of hydrogen peroxide (4.2), mix and cool. 4.4 Nitric acid solution (1 99). Take 10 mL of nitric acid (4.1) and dilute to 1000 mL with water. 4.5 Single element standard solution. the concentration is 1000mg/L. Prepare according to GB/T 602 method, or directly use certified standard substances. 4.6 Internal standard elements Ge (Ge), indium (In), bismuth (Bi) standard solution. the concentration is 1000mg/L. Prepared according to GB/T 602 method, or Direct use of certified reference materials. 4.7 Mixed standard stock solution. 1.0mLPb, As, Cd, Cu, Cr, Se, Ni, Sn standard solution (4.5), and 5.0mL Mn, Fe, Zn standard solution (4.5) in a 100mL volumetric flask, make up to volume with nitric acid solution (4.4), and mix. This standard The stock solution contains Pb, As, Cd, Cu, Cr, Se, Ni, Sn 10 mg/L, containing Mn, Fe, Zn 50 mg/L. Also accurately transfer 1.0mL Hg standard solution (4.5), make up to volume with nitric acid solution (4.4) in a 100 mL volumetric flask and mix. This Hg standard stock solution contains Hg10mg/L. 4.8 Internal standard element standard stock solution. Transfer 1.0mL internal standard element standard solution (4.6) separately, in 100mL volumetric flask, use nitrate

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