SN/T 4025-2014 English PDF

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SN/T 4025-2014: Determination of total rare earth content in rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy - Inductively coupled plasma mass spectrometry method (ICP-MS)
Status: Valid

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SN/T 4025-2014	319	Add to Cart	3 days	Determination of total rare earth content in rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy - Inductively coupled plasma mass spectrometry method (ICP-MS)	Valid

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Basic data

Standard ID: SN/T 4025-2014 (SN/T4025-2014)
Description (Translated English): Determination of total rare earth content in rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy - Inductively coupled plasma mass spectrometry method (ICP-MS)
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: H14
Classification of International Standard: 77.120.99
Word Count Estimation: 12,146
Date of Issue: 12/1/2014
Date of Implementation: 5/1/2015
Quoted Standard: GB/T 4010; GB/T 6682
Regulation (derived from): State-Quality-Inspection-accreditation [2014] 614
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the rare earth ferrosilicon magnesium ferrosilicon alloy and rare earths (lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, yttrium) the

SN/T 4025-2014: Determination of total rare earth content in rare earth ferrosilicon alloy and rare earth ferrosilicon magnesium alloy - Inductively coupled plasma mass spectrometry method (ICP-MS)

---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.
(RE silicon magnesium alloy and silicon alloy chemical analysis of rare earth Inductively coupled plasma mass spectrometry) People's Republic of China Entry-Exit Inspection and Quarantine Standards Rare earth ferrosilicon alloy and magnesium ferrosilicon alloy Determination of total rare earth Inductively Coupled Plasma Mass Spectrometry Inductivelycoupledplasmamassspectrometrymethod (ICP-MS) Issued on. 2014-11-19 2015-05-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard is drafted by. People's Republic of China in Inner Exit Inspection and Quarantine. The main drafters of this standard. Xiedong Bin, Xu Ren flower, era, Kang Jing. Rare earth ferrosilicon alloy and magnesium ferrosilicon alloy Determination of total rare earth Inductively Coupled Plasma Mass Spectrometry

1 Scope

This standard specifies the rare earth ferrosilicon magnesium ferrosilicon alloy and rare earths (lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, yttrium) The total amount of inductively coupled plasma mass (ICP-MS) spectrometry. This standard applies to the rare earth ferrosilicon magnesium ferrosilicon alloy and rare earths (lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, yttrium) Determination of the total. Measurement range. 0.005 to 6.00%

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 4010 alloy chemical analysis and sample preparation Laboratory use specifications and test methods GB/T 6682 Analysis

3 Method summary

The sample was decomposed hydrofluoric acid and nitric acid, perchloric acid flooding fluorine, in dilute nitric acid medium with ionized argon plasma source mass spectrometry directly Measurement, calibration standard method measured.

4 Reagents

Unless otherwise specified, reagents were pure class distinctions in the analysis used in the test water should be consistent with a water GB/T 6682 stipulated. 4.1 nitric acid (ρ = 1.42g/mL). 4.2 Hydrofluoric acid (ρ = 1.15g/mL). 4.3 perchloric acid (ρ = 1.66g/mL). 4.4 nitric acid solution (11). 4.5 nitric acid solution (982). 4.6 Hydrogen peroxide (30%). 4.7 Lanthanum standard stock solution (1mg/mL). Weigh accurately 0.1173g burning of lanthanum oxide 1h [w (REO) > 99.5% after 950 ℃, w (La2O3/REO) > 99.99%], placed in 100mL beaker, add 10mL nitric acid solution (4.4), and heated to dissolve completely, cooling To room temperature and transferred to 100mL volumetric flask, dilute with water to volume, and mix or directly by a certificate standard solution. 4.8 cerium standard stock solution (1mg/mL). Weigh accurately 0.1229g burning of cerium oxide 1h [w (REO) > 99.5% after 950 ℃, w (CeO2/REO) > 99.99%], placed in 100mL beaker, add 10mL nitric acid solution (4.4), was added dropwise hydrogen peroxide (4.6), low Heated to dissolve completely cooled to room temperature and transferred to 100mL volumetric flask, dilute with water to volume, and mix or direct use of a standard certificate Solution. ......

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