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GB/T 30376-2013: Determination of iron, manganese, copper, zinc, calcium, magnesium, potassium, sodium, phosphorus, sulfur in tea -- Inductively coupled plasma atomic emission spectrometry
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Determination of iron, manganese, copper, zinc, calcium, magnesium, potassium, sodium, phosphorus, sulfur in tea -- Inductively coupled plasma atomic emission spectrometry
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GB/T 30376-2013
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Basic data | Standard ID | GB/T 30376-2013 (GB/T30376-2013) | | Description (Translated English) | Determination of iron, manganese, copper, zinc, calcium, magnesium, potassium, sodium, phosphorus, sulfur in tea -- Inductively coupled plasma atomic emission spectrometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | X55 | | Classification of International Standard | 67.140.10 | | Word Count Estimation | 9,942 | | Quoted Standard | GB/T 8302; GB/T 8303 | | Regulation (derived from) | National Standards Bulletin 2013 No. 27 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the tea iron (Fe), manganese (Mn), copper (Cu), zinc (Zn), calcium (Ca), magnesium (Mg), potassium (K), sodium (Na), phosphorus (P), sulfur (S), inductively coupled plasma atomic emission spectrometry (ICP-AES) measurement principl | GB/T 30376-2013: Determination of iron, manganese, copper, zinc, calcium, magnesium, potassium, sodium, phosphorus, sulfur in tea -- Inductively coupled plasma atomic emission spectrometry
---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 iron, manganese, copper, zinc, calcium, magnesium, potassium, sodium, phosphorus, sulfur in tea. Inductively coupled plasma atomic emission spectrometry
ICS 67.140.10
X55
National Standards of People's Republic of China
Tea iron, manganese, copper, zinc, calcium, magnesium, potassium, sodium, phosphorus,
Inductively coupled plasma atomic sulfur
Atomic Emission Spectrometry
Determinationofiron, manganese, copper, zinc, calcium, magnesium,
potassium, sodium, phosphorus, sulfurintea-Inductivelycoupled
Issued on. 2013-12-31
2014-06-22 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The standard proposed by China Federation of Supply and Marketing Cooperatives.
This standard by the National Standardization Technical Committee of tea (SAC/TC339) centralized.
This standard was drafted. China Testing Technology Research Institute, China Federation of Supply and Marketing Cooperatives Hangzhou Tea Research Institute.
The main drafters of this standard. Tan peace, Zhang Yulan, Lu Hao, Gao Yang, Zhou Weilong, Sun Yujie, Gu Wang Xi.
Tea iron, manganese, copper, zinc, calcium, magnesium, potassium, sodium, phosphorus,
Inductively coupled plasma atomic sulfur
Atomic Emission Spectrometry
1 Scope
This standard specifies the tea iron (Fe), manganese (Mn), copper (Cu), zinc (Zn), calcium (Ca), magnesium (Mg), potassium (K), sodium (Na), phosphorus (P),
Principle of sulfur (S), inductively coupled plasma atomic emission spectrometry (ICP-AES) assay, reagents, instruments and equipment, sample preparation, determination,
Results calculated precision.
This standard applies to tea, iron, manganese, copper, zinc, calcium, magnesium, potassium, sodium, phosphorus, sulfur determination.
Each element of the method detection limits specified in Table 1.
Table 1 inductively coupled plasma atomic emission spectrometry with a detection limit unit micrograms per kilogram
Elements Fe Mn Cu Zn Ca Mg PSK Na
Microwave Digestion 916,422,219,292,511
Wet digestion 1,137,621,422,313,215
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.
GB/T 8302 sampling tea
Sample Preparation and Determination of dry matter content GB/T 8303 Tea grated
Principle 3
The samples were processed, the introduction of the test solution by inductively coupled plasma atomic emission spectrometry (ICP-AES), in particular with the working curve for each element
Zheng spectrum signal corresponding response in contrast, come to the content of each element.
4 Reagents
4.1 Requirements
Unless otherwise specified, all reagents excellent pure, the water used by the ultra-pure water, ultra-pure water resistivity after processing is not less than
18.2MΩ · cm.
4.2 Reagent Preparation
4.2.1 nitrate.
4.2.2 30% hydrogen peroxide.
4.2.3 2% nitric acid solution.
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