SN/T 4777-2017 English PDF

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SN/T 4777-2017: Determination of anthraquinone residues in tea for export. GC-MS/MS method
Status: Valid
Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
SN/T 4777-2017369 Add to Cart 4 days Determination of anthraquinone residues in tea for export. GC-MS/MS method Valid

Basic data

Standard ID SN/T 4777-2017 (SN/T4777-2017)
Description (Translated English) Determination of anthraquinone residues in tea for export. GC-MS/MS method
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard X55
Word Count Estimation 16,113
Date of Issue 2017-05-12
Date of Implementation 2017-12-01
Regulation (derived from) National Quality Inspection (2017) 228

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GB/T 8313   GB 5009.264   GH/T 1091   SN/T 5652.10   SN/T 4456   SN/T 1391   

SN/T 4777-2017: Determination of anthraquinone residues in tea for export. GC-MS/MS method

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(Determination of anthraquinone residues in tea leaves by gas chromatography - mass spectrometry/mass spectrometry) People's Republic of China entry and exit inspection and quarantine industry standards Method for detecting residual strontium in tea leaves Gas chromatography-mass spectrometry/mass spectrometry GC-MS/MSmethod Released on.2017-05-12 2017-12-01 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. Please note that some of the contents of this document may involve patents. Publication of this document The organization does not assume responsibility for identifying these patents. This standard is proposed and managed by the National Certification and Accreditation Administration. This standard was drafted. Zhejiang Institute of Inspection and Quarantine Science and Technology, Shanghai Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. The main drafters of this standard. Xie Wen, Lu Xunyuan, Huang Chaoqun, Chen Li, Shen Tuyan, Lou Chengjie, Yu Zhuoran, Deng Xiaojun, Xie Yundi. Method for detecting residual strontium in tea leaves Gas chromatography-mass spectrometry/mass spectrometry

1 Scope

This standard specifies the determination of 9,10-蒽醌 residues in green tea, black tea, Pu'er tea and oolong tea by gas chromatography-mass spectrometry/mass spectrometry. method. This standard applies to the quantitative determination and confirmation of 9,10-蒽醌 residues in green tea, black tea, Pu'er tea and oolong tea.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 6682 Analytical laboratory water specifications and test methods

3 method summary

The sample is homogenized with a mixed solvent of n-hexane-acetone, and the extract is concentrated, and then purified by a Florisil column, using gas chromatography- Mass spectrometry/mass spectrometry detection and confirmation, internal standard method quantification.

4 reagents and materials

Unless otherwise stated, the reagents used were of analytical grade and the water used was primary water in accordance with GB/T 6682. 4.1 n-hexane. chromatographically pure. 4.2 Acetone. chromatographically pure. 4.3 Ether. chromatographically pure. 4.4 Sodium chloride. 4.5 anhydrous sodium sulfate. 650 ° C burning for 4h, cooled to room temperature in a desiccator, stored in a sealed bottle for use. 4.6 Florisil. Silica 75μm~150μm (100 mesh~200 mesh), 650 °C for 4h, activated at 130 °C for 4h in drying Cool to room temperature, deactivate with 2% water, and set aside. 4.7 n-Hexane-Acetone (1 1, by volume). Mix equal volumes of n-hexane and acetone. 4.8 n-Hexane-diethyl ether (8 2, by volume). N-hexane and diethyl ether (8 2, by volume) were mixed well. 4.9 9,10-蒽醌, 9,10-蒽醌-D8 reference material (Anthraquinone, CAS. 84-65-1, C14H8O2; Anthraquinone-D8, CAS. 10439-39-1). The purity is greater than or equal to 99%. 4.10 Standard stock solution. accurately weigh the appropriate amount of standard material (4.9), and make a standard stock solution of 0.4mg/mL with acetone at 0 °C~ Store in the refrigerator at 4 °C in the dark, valid for 6 months. 4.11 蒽醌-D8 standard stock solution. accurately weigh the appropriate amount of standard (4.9), and make a standard stock solution of 0.4mg/mL with acetone. 0 ° C ~ 4 ° C in the refrigerator to protect from light, valid for 6 months. 4.12 Preparation of standard intermediate solution. accurately transfer the appropriate amount of standard stock solution (4.10), and prepare a standard solution of 10μg/mL with acetone; accurate Transfer the appropriate amount of standard stock solution (4.11), prepare a 0.2μg/mL standard solution with acetone and store it in the refrigerator at 0°C~4°C.
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