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| SN/T 2049-2008 | English | 239 |
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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
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SN/T 2049-2008
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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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