SN/T 2049-2008 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 2049-2008	239	Add to Cart	3 days	Determination of copper, nickel, lead, manganese, cadmium, titanium in food grade of phosphoric acid for import and export-Inductively coupled plasma atomic emission spectrometric method	Obsolete

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Basic data

Standard ID: SN/T 2049-2008 (SN/T2049-2008)
Description (Translated English): Determination of copper, nickel, lead, manganese, cadmium, titanium in food grade of phosphoric acid for import and export-Inductively coupled plasma atomic emission spectrometric method
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: X04
Word Count Estimation: 6,672
Date of Issue: 2008-04-29
Date of Implementation: 2008-11-01
Quoted Standard: GB/T 6682
Regulation (derived from): Industry standard filing Notice 2008 No. 7
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the food grade phosphoric acid copper, nickel, lead, manganese, cadmium, titanium inductively coupled plasma atomic emission spectrometry (abbreviated ICP-AES) measurement method. This standard applies to food-grade phosphoric acid copper, nickel, lead, manganese, cadmium, titanium determination.

SN/T 2049-2008: Determination of copper, nickel, lead, manganese, cadmium, titanium in food grade of phosphoric acid for import and export-Inductively coupled plasma atomic emission spectrometric method

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Determination of copper, nickel, lead, manganese, cadmium, titanium in food grade of phosphoric acid for import and export-Inductively coupled plasma atomic emission spectrometric method Exit inspection and quarantine industry standard book People's Republic of China Import and export of food-grade phosphoric acid copper, nickel, lead, manganese, cadmium, Inductively coupled plasma atomic titanium Emission Spectrometry Posted 2008-04-29 2008-11-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard by the People's Republic of China Jiangsu CIQ is responsible for drafting. The main drafters of this standard. lord Xing, Zhouqiu Hong, Di Xiaodong Ding Hua, Guojun Wen. This standard is the first release of the entry-exit inspection and quarantine industry standards. Import and export of food-grade phosphoric acid copper, nickel, lead, manganese, cadmium, Inductively coupled plasma atomic titanium Emission Spectrometry

1 Scope

This standard specifies the food-grade phosphoric acid copper, nickel, lead, manganese, cadmium, titanium by inductively coupled plasma atomic emission spectrometry (abbreviated ICP- AES) measurement method. This standard applies to copper, nickel, lead, manganese, cadmium and food grade phosphoric acid to titanium.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-1992, neq ISO 3696. 1981)

3 Method summary

Samples of food-grade phosphoric acid directly diluted 20-fold with ICP-AES measured strength solution of analyte characteristic spectral lines using standard Quantitative added.

4 Reagents and solutions

Unless otherwise stated, the method used reagents were gifted class pure reagents, reagent water to comply with two water GB/T 6682 regulations. 4.1 nitrate. 4.2 standard stock solution. copper, nickel, lead, manganese, cadmium, titanium single element standard solution directly using certified reference materials, which are concentration 1000μg/mL. 4.3 manganese intermediate standard solution. accurate Pipette 10mL manganese standard stock solution (4.2), placed in 100mL flask, add 10mL of nitric acid, And diluted with water to volume, and mix. At a concentration of 100μg/mL. 4.4 mixed standard solution. Pipette were accurate copper, nickel, lead, cadmium, titanium single element standard stock solution (4.2) 0.50mL, accurate pipetting standard manganese Associate intermediate solution (4.3) 0.50mL, placed in 100mL flask, add 10mL of nitric acid, and diluted with water to volume, and mix. This solution Liquid copper, nickel, lead, cadmium, titanium concentration was 5μg/mL, manganese concentration of 0.5μg/mL. 4.5 Argon purity greater than 99.99%. 5. Apparatus 5.1 inductively coupled plasma emission spectrometer. 5.2 electronic balance. Step 6 Analysis 6.1 Determination of the sample and to draw the standard curve 6.1.1 Standard Series solution preparation Weigh each 8.5g homogeneous sample (accurate to 0.01g) in 100mL flask, according to Table 1, wherein the concentration series were added to mix ......

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