GB/T 18882.1-2023 PDF English
US$380.00 · In stock · Download in 9 secondsGB/T 18882.1-2023: Chemical analysis methods of mixed rare earth oxide of ion-absorption rare earth ore - Part 1: Determination of fifteen rare earth oxides composition Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 18882.1: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 18882.1-2023 | English | 380 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Chemical analysis methods of mixed rare earth oxide of ion-absorption rare earth ore - Part 1: Determination of fifteen rare earth oxides composition
| Valid |
| GB/T 18882.1-2008 | English | 150 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Chemical analysis methods of mixed rare earth oxide of ion-absorbed type RE ore -- Determination of fifteen REO relative content
| Obsolete |
| GB/T 18882.1-2002 | English | 239 |
Add to Cart
|
2 days
|
Chemical analysis methods for mixed rare earth oxide of ion-absorbed type RE ore -- Determination of total rare earth contents -- Oxalate gravimetric method
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 18882.1-2023
GB/T 18882.1-2023: Chemical analysis methods of mixed rare earth oxide of ion-absorption rare earth ore - Part 1: Determination of fifteen rare earth oxides composition
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT18882.1-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.120.99
CCS H 14
Replacing GB/T 18882.1-2008
Chemical analysis methods of mixed rare earth oxide of ion-
absorption rare earth ore - Part 1.Determination of fifteen
rare earth oxides composition
Issued on. SEPTEMBER 07, 2023
Implemented on. APRIL 01, 2024
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
Introduction... 5
1 Scope... 6
2 Normative references... 7
3 Terms and definitions... 7
4 Method 1.X-ray fluorescence spectrometry... 7
5 Method 2.Inductively coupled plasma optical emission spectroscopy... 21
Chemical analysis methods of mixed rare earth oxide of ion-
absorption rare earth ore - Part 1.Determination of fifteen
rare earth oxides composition
Warning – Personnel using this document shall have practical experience in
formal laboratory work. This document does not address all possible security
issues. Users shall have certain professional knowledge and skills and fully realize
that improper operation may cause gas leakage, current leakage, fire or other
serious consequences.
1 Scope
This document describes the method for determining the fifteen rare earth oxides
composition in mixed rare earth oxides, carbonates, oxalates, and rare earth chloride
feed solutions of ion-absorption rare earth ore.
This document applies to the determination of fifteen rare earth oxides composition in
mixed rare earth oxides, carbonates, oxalates, and rare earth chloride feed solutions of
ion-absorption rare earth ore. It contains two methods. Method 1.X-ray fluorescence
spectrometry, whose measurement range is shown in Table 1.Method 2.Inductively
coupled plasma emission spectrometry, whose measurement range is shown in Table 2.
When the measurement ranges of the two methods overlap, Method 1 is recommended
as the arbitration method.
4.2.16 Lutetium oxide w (REO) ≥ 99.50%, w (Lu2O3/REO) > 99.99%, calcined at 950 ℃
for 1 h, cooled to room temperature.
4.2.17 Hydrochloric acid (ρ = 1.19 g/mL).
4.2.18 Nitric acid (ρ = 1.42 g/mL).
4.2.19 Hydrogen peroxide [w (H2O2) ≥ 30%].
4.2.20 Hydrochloric acid solution (1+1).
4.2.21 Hydrochloric acid solution (1+19).
4.2.23 Standard stock solution B. Weigh 0.100 0 g of praseodymium oxide (4.2.5) in a
100 mL beaker; use a small amount of water (4.2.1) to moisten; add 10 mL of
hydrochloric acid solution (4.2.20); heat and dissolve until clear; cool and transfer to a
200 mL volumetric flask; use hydrochloric acid solution (4.2.21) to dilute to the mark;
mix well. This solution contains 0.5 mg of praseodymium oxide in 1 mL.
4.2.24 Standard stock solution C~O. Weigh each single rare earth oxide according to
4.5.3 Preparation of test material sample
4.5.3.1 Mixed rare earth oxide of ion-absorption rare earth ore. Place the test material
(4.5.1) in a 100 mL beaker; add 5 mL of hydrochloric acid (4.2.20) [add 5 mL of nitric
acid (4.2.18) for samples with high cerium content]; add 0.5 mL of hydrogen peroxide
(4.2.19); heat to decompose and evaporate to near dryness. After cooling to room
temperature, add 5.00 mL of scandium internal standard solution (4.2.25) or vanadium
internal standard solution (4.2.26); dissolve to clear; mix well.
4.5.3.2 Mixed rare earth oxalate of ion-absorption rare earth ore. Calcine the test
material (4.5.1) at 950 ℃ for 1 h; then cool it to room temperature in a desiccator.
Follow the subsequent steps as in 4.5.3.1.
4.5.3.1.
4.5.3.5 Take 0.30 mL of the solution (see 4.5.3.1 ~ 4.5.3.4); drop it evenly on the filter
paper (4.2.27) spread on the glass plate; leave it for 20 min; dry it under an infrared
lamp before determination.
4.5.4 Preparation of series standard samples
According to Table 6, respectively transfer the standard stock solution into 12 100 mL
beakers; evaporate until almost dry; cool to room temperature; add 5.0 mL of scandium
internal standard solution (4.2.25) or vanadium internal standard solution (4.2.26);
dissolve to clear; mix well. Prepare standard samples according to the steps in 4.5.3.5.
The distribution values of the series standard samples are shown in Table 7.
and transfer to a 100 mL volumetric flask; use water (5.2.1) to dilute to the mark; mix
well. This solution contains 1.00 mg of yttrium oxide in 1 mL.
5.2.21 Lanthanum oxide standard stock solution. Weigh 0.500 0 g of lanthanum oxide
(5.2.3) into a 100 mL beaker; use water (5.2.1) to moisten; add 5 mL of hydrochloric
acid (5.2.17) and 1 mL of hydrogen peroxide (5.2.19); heat and decompose until clear;
cool and transfer to a 100 mL volumetric flask; use water (5.2.1) to dilute to the mark;
mix well.
5.2.23 Praseodymium oxide standard stock solution. Weigh 0.500 0 g of praseodymium
oxide (5.2.5) into a 100 mL beaker; use water (5.2.1) to moisten; add 5 mL of
hydrochloric acid (5.2.17) and 1 mL of hydrogen peroxide (5.2.19); heat and
decompose until clear; cool and transfer to a 100 mL volumetric flask; use water (5.2.1)
to dilute to the mark; mix well. This solution contains 5.00 mg of praseodymium oxide
in 1 mL.
5.2.27 Gadolinium oxide standard stock solution. Weigh 0.500 0 g of gadolinium oxide
(5.2.9) into a 100 mL beaker; use water (5.2.1) to moisten; add 5 mL of hydrochloric
acid (5.2.17) and 1 mL of hydrogen peroxide (5.2.19); heat and decompose until clear;
cool and transfer to a 100 mL volumetric flask; use water (5.2.1) to dilute to the mark;
mix well. This solution contains 5.00 mg of gadolinium oxide in 1 mL.
5.2.28 Terbium oxide standard stock solution. Weigh 0.100 0 g of terbium oxide (5.2.10)
into a 100 mL beaker; use water (5.2.1) to moisten; add 5 mL of hydrochloric acid
(5.2.17) and 1 mL of hydrogen peroxide (5.2.19); heat and decompose until clear; cool
and transfer to a 100 mL volumetric flask; use water (5.2.1) to dilute to the mark; mix
well. This solution contains 1.00 mg of terbium oxide in 1 mL.
5.2.31 Erbium oxide standard stock solution. Weigh 0.500 0 g of erbium oxide (5.2.13)
into a 100 mL beaker; use water (5.2.1) to moisten; add 5 mL of hydrochloric acid
(5.2.17) and 1 mL of hydrogen peroxide (5.2.19); heat and decompose until clear; cool
and transfer to a 100 mL volumetric flask; use water (5.2.1) to dilute to the mark; mix
well. This solution contains 5.00 mg of erbium oxide in 1 mL.
5.2.32 Thulium oxide standard stock solution. Weigh 0.100 0 g of thulium oxide (5.2.14)
into a 100 mL beaker; use water (5.2.1) to moisten; add 5 mL of hydrochloric acid
(5.2.17) and 1 mL of hydrogen peroxide (5.2.19); heat and decompose until clear; cool
and transfer to a 100 mL volumetric flask; use water (5.2.1) to dilute to the mark; mix
well. This solution contains 1.00 mg of thulium oxide in 1 mL.
5.2.33 Ytterbium oxide standard stock solution. Weigh 0.500 0 g of ytterbium oxide
(5.2.15) into a 100 mL beaker; use water (5.2.1) to moisten; add 5 mL of hydrochloric
acid (5.2.17) and 1 mL of hydrogen peroxide (5.2.19); heat and decompose until clear;
cool and transfer to a 100 mL volumetric flask; use water (5.2.1) to dilute to the mark;
mix well. This solution contains 5.00 mg of ytterbium oxide in 1 mL.
5.2.34 Lutetium oxide standard stock solution. Weigh 0.100 0 g of lutetium oxide
(5.2.16) into a 100 mL beaker; use water (5.2.1) to moisten; add 5 mL of hydrochloric
acid (5.2.17) and 1 mL of hydrogen peroxide (5.2.19);
5.2.35 Standard stock solutions I ~ VIII. According to Table 11, weigh each single rare
earth oxide (see 5.2.2 ~ 5.2.16) into a 200 mL beaker; use water (5.2.1) to moisten; add
10 mL of hydrochloric acid (5.2.17) and 1 mL of hydrogen peroxide (5.2.19);
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of GB/T 18882.1-2023 be delivered?Answer: The full copy PDF of English version of GB/T 18882.1-2023 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of GB/T 18882.1-2023_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 18882.1-2023_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 18882.1-2023 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. Question 5: Should I purchase the latest version GB/T 18882.1-2023?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 18882.1-2023 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. How to buy and download a true PDF of English version of GB/T 18882.1-2023?A step-by-step guide to download PDF of GB/T 18882.1-2023_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "GB/T 18882.1-2023".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9
|