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SN/T 0525-2012: Determination of thiram residue in fruit and vegetable for export
Status: Valid SN/T 0525: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 0525-2012 | English | 629 |
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5 days [Need to translate]
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Determination of thiram residue in fruit and vegetable for export
| Valid |
SN/T 0525-2012
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| SN 0525-1996 | English | 399 |
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3 days [Need to translate]
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Method for the determination of thiram residues in fruits and vegetables for export
| Obsolete |
SN 0525-1996
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PDF similar to SN/T 0525-2012
Basic data | Standard ID | SN/T 0525-2012 (SN/T0525-2012) | | Description (Translated English) | Determination of thiram residue in fruit and vegetable for export | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | X24;X26 | | Classification of International Standard | 67.080 | | Word Count Estimation | 24,295 | | Older Standard (superseded by this standard) | SN/T 0525-1996 | | Quoted Standard | GB/T 6682 | | Regulation (derived from) | National Quality Inspection (2012) 237 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the export of fruits, vegetables thiram residues liquid chromatography and liquid chromatography mass spectrometry/mass spectrometry. This standard applies to apples, pears, bananas, watermelon, celery, eggplant and cabbage thiram | SN/T 0525-2012: Determination of thiram residue in fruit and vegetable for export---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.
Determination of thiram residue in fruit and vegetable for export
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Replacing SN 0525-1996
Export fruit and vegetables thiram Residues
Detection method
Issued on. 2012-05-07
2012-11-16 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.
This standard replaces SN 0525-1996 "exporting fruits and vegetables thiram residues in."
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China SZCIQ, People's Republic of China Entry-Exit Inspection and Xiamen
Quarantine Bureau.
The main drafters of this standard. Lin Li, Chen Bo, Hou Yuexi, Xieli Qi, Zhou Yu, Yue Zhenfeng, Jinbao Hui.
This standard replaces the standards previously issued as follows.
--- SN 0525-1996.
Export fruit and vegetables thiram Residues
Detection method
1 Scope
This standard specifies the export of fruits and vegetables thiram residues in liquid chromatography and liquid chromatography - mass spectrometry/mass spectrometry methods.
This standard applies to apples, pears, bananas, watermelon, celery, eggplant and cabbage measured thiram residues.
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
Principle 3
Samples were extracted with acetonitrile and concentrated were determined by external standard liquid chromatography and LC-MS instrument.
4 Reagents and materials
Unless otherwise indicated, all reagents were of analytical grade water as a water GB/T 6682 regulations.
4.1 acetonitrile. HPLC grade.
4.2 Methanol. HPLC grade.
4.3 methanol - water (3070, volume ratio). Take 30mL of methanol (4.2) and 70mL of water and mix well.
4.4 methanol - water (5050, volume ratio). Take 50mL of methanol (4.2) and 50mL of water and mix well.
4.5 formic acid. HPLC grade.
Ammonium acetate 4.6. HPLC grade.
4.7 0.05% methanol solution of formic acid. formic acid was added 0.1mL in 200mL of methanol.
0.05% formic acid in methanol of 4.8 - Water (5050, volume ratio). Take 50mL0.05% formic acid in methanol solution (4.7) and 50mL
Water mix.
4.9 ammonium acetate solution (0.05% formic acid). 5mmol/L. Accurately weigh 0.3854g ammonium acetate (4.6), dissolved in water, add 0.5mL
Formic acid (4.5), volume with water to 1000mL.
4.10 Anhydrous sodium sulfate. AR. 500 ℃ burning 4h, placed in a desiccator.
4.11 thiram Standards. thiram, purity greater than 99%, CAS Number. 137-26-8.
4.12 thiram standard stock solution. weigh accurately 12.5mg standard (4.11), (4.7) dissolved in methanol and 0.05% formic acid
Volume to 25mL, to give a concentration of 500mg/L standard stock solution, the solution was stored in a brown flask, insurable at -18 ℃ condition
Period of 3 months.
4.13 standard solution. Liquid Chromatography. if necessary take appropriate standard stock solution, a methanol solution of 0.05% formic acid - water (50
50, volume ratio) (4.8) diluted to the appropriate standard working solution; liquid chromatography - mass spectrometry/mass spectrometry. necessary take appropriate standard stock solution to empty
White matrix extracts were diluted to a suitable standard working solution.
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