GB/T 35871-2018 English PDF

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GB/T 35871-2018: Inspection of grain and oils -- Determination of calcium, potassium, magnesium, sodium, iron, phosphorus, zinc, copper, manganese, boron, barium, molybdenum, cobalt, chromium, lithium, strontium, nickel, sulfur, vanadium, selenium, rubidium contents in ce
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 35871-2018	199	Add to Cart	3 days	Inspection of grain and oils -- Determination of calcium, potassium, magnesium, sodium, iron, phosphorus, zinc, copper, manganese, boron, barium, molybdenum, cobalt, chromium, lithium, strontium, nickel, sulfur, vanadium, selenium, rubidium contents in ce	Valid

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Basic data

Standard ID: GB/T 35871-2018 (GB/T35871-2018)
Description (Translated English): Inspection of grain and oils -- Determination of calcium, potassium, magnesium, sodium, iron, phosphorus, zinc, copper, manganese, boron, barium, molybdenum, cobalt, chromium, lithium, strontium, nickel, sulfur, vanadium, selenium, rubidium contents in ce
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: X11
Classification of International Standard: 67.060
Word Count Estimation: 10,112
Date of Issue: 2018-02-06
Date of Implementation: 2018-09-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 35871-2018: Inspection of grain and oils -- Determination of calcium, potassium, magnesium, sodium, iron, phosphorus, zinc, copper, manganese, boron, barium, molybdenum, cobalt, chromium, lithium, strontium, nickel, sulfur, vanadium, selenium, rubidium contents in ce

---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.
Copper oxide, Inspection of grain and oils-Determination of calcium, potassium, magnesium, sodium, iron, phosphorus, zinc, copper, manganese, boron, barium, molybdenum, cobalt, chromium, lithium, strontium, nickel, sulfur, vanadium, selenium, rubidium contents In cerea ICS 67.060 X11 National Standards of People's Republic of China Grain and oil inspection of calcium, potassium, magnesium, sodium, and Iron, phosphorus, zinc, copper, manganese, boron, antimony, molybdenum, cobalt, chromium, Determination of Lithium, Niobium, Nickel, Sulfur, Vanadium, Selenium and Tellurium Contents Inductively Coupled Plasma Emission Spectrometry Molybdenum, cobalt,chromium,lithium,strontium,nickel,sulfur, 2018-02-06 Release.2018-09-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by the National Grain Administration. This standard is under the jurisdiction of the National Grain and Oil Standardization Technical Committee (SAT/TC270). This standard was drafted by. National Institute of Food Science, Concentrated Science and Technology (Hangzhou) Co., Ltd., Ministry of Agriculture grain quality supervision inspection Testing Center, Ministry of Agriculture Vegetable Quality Supervision, Inspection and Testing Center (Beijing), COFCO Nutrition and Health Research Institute, Beijing Agricultural Quality Standard and Inspection Measurement Technology Research Center, Vegetable Research Center of Beijing Academy of Agriculture and Forestry Sciences. The main drafters of this standard. Wang Songxue, Zhou Minghui, Yu Xiaofeng, Gao Ping, Lu Meibin, Huang Weixia, Wu Yanxiang, Li Dan, Lu Anxiang, Yan Yunxia, Wang Jihua, He Hongju. Grain and oil inspection of calcium, potassium, magnesium, sodium, and Iron, phosphorus, zinc, copper, manganese, boron, antimony, molybdenum, cobalt, chromium, Determination of Lithium, Niobium, Nickel, Sulfur, Vanadium, Selenium and Tellurium Contents Inductively Coupled Plasma Emission Spectrometry

1 Scope

This standard specifies the use of inductively coupled plasma-atomic emission spectrometry for the determination of calcium, potassium, magnesium, sodium, iron, phosphorus, zinc, copper, manganese in grains and their products. Principles, reagents and materials, instruments and equipment, procedures, results calculations and representations of boron, bismuth, molybdenum, cobalt, chromium, lithium, ruthenium, nickel, sulfur, vanadium, selenium, and tellurium And its precision requirements. This standard applies to calcium, potassium, magnesium, sodium, iron, phosphorus, zinc, copper, manganese, boron, antimony, molybdenum, cobalt, chromium, lithium, antimony, nickel, sulfur, vanadium, and Determination of selenium and tellurium content.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. Preparation of GB/T 602 standard solution for determination of impurities in chemical reagents GB/T 6682 Analysis Laboratory Water Specifications and Test Methods JJG768 emission spectrometer verification procedures

3 Principle

After the sample is digested, the test solution is introduced into the plasma emission spectrometer and its intensity is measured at the corresponding element wavelength, using the standard curve method. Calculate the element content in the sample.

4 Reagents and materials

Unless otherwise specified, all the reagents used are of pure grade and the water is secondary water according to GB/T 6682. 4.1 Nitric acid. Subboiling or high purity reagents. 4.2 Perchloric acid. 4.3 Hydrogen peroxide (30%). 4.4 Nitric acid solution (5%). Accurately take 50 mL of nitric acid (4.1) slowly into appropriate amount of water and make up to 1000 mL with water. 4.5 standard solution 4.5.1 21 single element standard solutions. single element standard solution can be prepared according to GB/T 602 method. When applicable, it should be adopted by the State Certificates and single-element or multi-element standard solutions that are certified and awarded to a standard substance certificate. 4.5.2 multi-element mixed standard stock solution. According to the concentration of N1~N6 series standard solution specified in Appendix A, calculate the preparation of N6 concentration The volume of the 21 kinds of single element standard solution (4.5.1) required by the above, according to the calculated volume, respectively, the above 21 kinds of single element standard solution ......

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