Path: Home > SN/T > Page16 > SN/T 2805-2011

Price & Delivery

US$209.00 · In stock · Download in 9 seconds
SN/T 2805-2011: Rapid determination of melamine in export liquid state milk. Raman spectrometry method
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure
Status: Valid

Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
SN/T 2805-2011	English	209	Add to Cart	3 days [Need to translate]	Rapid determination of melamine in export liquid state milk. Raman spectrometry method

SN/T 2805-2011: Rapid determination of melamine in export liquid state milk. Raman spectrometry method

---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.
Rapid determination of melamine in export liquid state milk.Raman spectrometry method People's Republic of China Entry-Exit Inspection and Quarantine Standards Exports of liquid milk melamine Rapid Determination Raman spectroscopy Issued on. 2011-02-25 2011-07-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard was drafted in accordance with the rules of GB/T 1.1-2009 and GB/T 20001.4-2001 given. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. China Inspection and Quarantine Science Research Institute, Heilongjiang People's Republic of China Exit Inspection and Quarantine. The main drafters of this standard. Qi flowers, ROCKETS, Liu Feng, Zhang Cheng, Zou Mingjiang, Wang Xi Meng, Wu Miao Miao, Hong celebrate, Li Meng, Yang Fuqiang.

Introduction

When issuing authority of the document drew attention to the statement of compliance with this document may involve 4.5 sensitizing agents related to the use of patents. The issuing authority for the patent document authenticity, validity and scope without any position. The patent holder has to ensure that the issuing authority of the document, he was willing to reasonable and non-discriminatory terms and conditions with any applicant, Patent licensing negotiations. The patent holder's statement has been filed in the release mechanism of the present document. Related information is available through the following Contact at. Patent holder. Chinese Academy of Inspection and Quarantine Contact. Zou Mingjiang Address. Gaobeidian Road, Chaoyang District, Beijing, No. 3 Chinese Academy of Inspection and Quarantine Zip code. 100123 Please note that in addition to the above patents, some of the contents of this document can still be involved in the patent. The issuing authority of this document does not bear this recognition These patent liability. Exports of liquid milk melamine Rapid Determination Raman spectroscopy

1 Scope

This standard specifies the Raman spectroscopy method for rapid detection of melamine in liquid milk. This standard applies to raw milk, determination and sour milk melamine content Raman spectroscopy.

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 GB/T 22388-2008 raw milk and dairy products of melamine detection methods Principle 3 Different materials have their molecular structure corresponding characteristic Raman (Raman) spectroscopy. Raw milk, milk and yogurt samples were diluted Release, centrifugation, dried the surface enhancement principle based detection kit enhancement, scanning for Raman scattering. To 928cm-1 ± 2cm-1 as a reference Test peak, set the corresponding strength of 100 spectra were normalized at 698cm-1 ± 2cm-1 under, according to the melamine content in the sample and return Houla Man correspondence between a spectrum of relative strength was determined by external standard method.

4 Reagents and materials

Unless otherwise indicated, the reagents used were of analytical grade or above water as a water GB/T 6682 regulations. 4.1 melamine standard. purity ≥99.0%. 4.2 Melamine standard stock solution. 1.00g/L. Accurately weighed 100mg (accurate to 0.1mg) melamine standard (4.1), was added 60mL ~ 80mL of water, ultrasonic solubilization, constant volume to 100mL volumetric flask. Stored in the dark at 0 ℃ ~ 4 ℃ condition. 4.3 negative samples. Determination of melamine by the GB GB/T 22388-2008 Method < 0.1mg/kg actual sample or negative Dry sample by sample matrix matching ratio was diluted with water before use when the existing service. 4.4 standard solution. When you use the existing service. 4.4.1 standard solution Ⅰ (50.0μg/mL). accurate Pipette 5.0mL melamine stock standard solution (4.2) in 100mL flask With water to volume, and mix. 4.4.2 standard solution Ⅱ (10.0μg/mL). accurate Pipette 1.0mL melamine stock standard solution (4.2) in 100mL flask With water to volume, and mix. 4.4.3 Table 1 pipette different volumes of each standard solution Ⅰ or Ⅱ (4.4.1 and 4.4.2) and negative sample volume to 5.0mL, Mix well. ...