SN/T 3323.3-2012 PDF EnglishUS$215.00 · In stock · Download in 9 seconds
SN/T 3323.3-2012: Mill scale - Part 3: Determination of lead, chromium, cadmium - Inductively coupled plasma atomic emission spectrometry Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsSN/T 3323.3-2012: Mill scale - Part 3: Determination of lead, chromium, cadmium - Inductively coupled plasma atomic emission spectrometry---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/SNT3323.3-2012 ENTRY-EXIT INSPECTION AND QUARANTINE INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA Mill scale - Part 3: Determination of lead, chromium, cadmium - Inductively coupled plasma atomic emission spectrometry ISSUED ON: DECEMBER 12, 2012 IMPLEMENTED ON: JULY 01, 2013 Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Principle ... 4 4 Reagents and materials ... 5 5 Instruments ... 5 6 Specimen ... 6 7 Determination steps ... 6 8 Result calculation ... 7 9 Precision ... 8 Annex A (informative) Analysis wavelength of element and working conditions of instrument ... 9 Annex B (informative) Recommended solution concentration of calibration curve .. 10 Mill scale - Part 3: Determination of lead, chromium, cadmium - Inductively coupled plasma atomic emission spectrometry1 ScopeThis Part of SN/T 3323 specifies inductively coupled plasma atomic emission spectrometry (ICP-AES), the testing method to determine the lead, chromium, cadmium contents in mill scale. This Part is applicable to the determination of lead, chromium, cadmium contents in mill scale. The lower limit of determination for each element is shown in Table 1. Table 1 -- Lower limit of determination for each element2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 6379.2, Measurement methods and results - Accuracy (trueness and precision) - Part 2: Determine the standard methods of measurement repeatability and reproducibility of the basic method GB/T 6682, Water for analytical laboratory use - Specification and test methods GB/T 12806, Laboratory glassware - One-mark volumetric flasks GB/T 12808, Laboratory glassware - One-mark pipettes3 PrincipleThe specimen is decomposed by hydrochloric acid. Use the inductively coupled plasma Element Mass fraction % atomic emission spectrometer for testing. Use the matrix matching method to eliminate the matrix effects.4 Reagents and materialsUnless otherwise stated, all reagents are analytically pure and above. Water is grade two water specified in GB/T 6682. 4.1 Hydrochloric acid (ρ= 1.19g/mL): Guaranteed reagent. 4.2 High-purity iron powder: The iron mass fraction is greater than 99.98%. 4.3 Hydrochloric acid (1+1): Add 1 volume of hydrochloric acid (4.1) to 1 volume of water. Mix well. 4.4 Lead, chromium, cadmium standard solution (certified reference material): 1000μg/mL. 4.5 35mg/mL iron matrix solution: Weigh 3.5g of high-purity iron powder (4.2). Add 40mL of hydrochloric acid solution (4.3). Heat to dissolve. Use water to set volume constant in a 100mL volumetric flask.5 Instruments5.1 Inductively coupled plasma atomic emission spectrometer 5.1.1 Performance indicator The spectrometer can also be sequential, multi-channel or full-spectral. In either type, it shall meet the following performance indicator: The correlation coefficient (r) of the standard curve of each element to be tested is greater than 0.995. 5.1.2 Working state of instrument Start the ICP-AES instrument. According to the operating procedures of the instrument, warm up the instrument and adjust various conditions and measurement parameters of the instrument, so that the performance of the instrument meets the requirements of 5.1.1. 5.1.3 Confirmation of spectral lines for determination Choose the appropriate spectral lines according to the instrument conditions. The selection of the spectral lines shall follow the following rules: volumetric flask. Use water to set the volume constant. Shake well. Determine on the inductively coupled plasma atomic emission spectrometer with selected operating parameters. 7.4 Preparation of working curve Add 10mL of iron matrix solution (4.5), 8mL of HCl (4.1) into a set of 100mL volumetric flasks. Respectively pipette a certain amount of standard solutions of each element into the volumetric flask. Use water to dilute to the scale. Shake well. The content of the test element shall be within the range of the working curve made. The quantity of the series of standard solution shall be decided by the precision requirements. It requires not to be less than 4. See Annex B for the solution concentration of the recommended calibration curve. 7.5 Measurement 7.5.1 Measurement of calibration curve Adjust the instrument according to the provisions in 5.1.2. Measure the spectral intensity of each test element in the series solutions of calibration curve (7.4) at the analysis line in turn. The instrument automatically returns to establish a linear equation. Its correlation coefficient (r) shall comply with 5.1.1 regulations. 7.5.2 Determination of test solution Introduce the test solution (7.3) into the plasma in turn. Respectively determine the spectrum strength of each test element and internal standard elements at the same analysis line. The instrument shall automatically calculate the corresponding concentration of each element according to the calibration curve.8 Result calculationCalculate the content of each element according to formula (1), in mass fraction. Where, Xi - The content of each test element i (mass fraction), %; ci - The mass concentration of test element found from the working curve, in micrometers per milliliter (μg/ mL); V - The constant volume of test solution, in milliliters (mL); ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of SN/T 3323.3-2012 be delivered?Answer: The full copy PDF of English version of SN/T 3323.3-2012 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 SN/T 3323.3-2012_English with my colleagues?Answer: Yes. The purchased PDF of SN/T 3323.3-2012_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 -- SN/T 3323.3-2012 -- 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.How to buy and download a true PDF of English version of SN/T 3323.3-2012?A step-by-step guide to download PDF of SN/T 3323.3-2012_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 "SN/T 3323.3-2012". 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 |
