SN/T 0525-2012 English PDF

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SN/T 0525-2012: Determination of thiram residue in fruit and vegetable for export
Status: Valid

SN/T 0525: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 0525-2012	629	Add to Cart	5 days	Determination of thiram residue in fruit and vegetable for export	Valid
SN 0525-1996	399	Add to Cart	3 days	Method for the determination of thiram residues in fruits and vegetables for export	Obsolete

Similar standards

GB/T 10782   GB/T 22165   GB/T 20706   SN/T 0327.1   SN/T 0327.2   SN/T 0533   

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Older Standard (superseded by this standard): SN/T 0525-1996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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