GB/T 39029-2020 PDF EnglishUS$115.00 · In stock · Download in 9 seconds
GB/T 39029-2020: Technical specification of efficacy evaluation for removing of heavy metal by biological products 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 standardsGB/T 39029-2020: Technical specification of efficacy evaluation for removing of heavy metal by biological products---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/GBT39029-2020 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 07.080 A 21 Technical specification of efficacy evaluation for removing of heavy metal by biological products ISSUED ON: JULY 21, 2020 IMPLEMENTED ON: FEBRUARY 01, 2021 Issued by: State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Terms and definitions ... 4 4 General principles ... 5 5 Basic requirements ... 5 6 Evaluation methods ... 5 7 Evaluation report expressions ... 8 Technical specification of efficacy evaluation for removing of heavy metal by biological products1 ScopeThis Standard specifies the general principles, basic requirements, evaluation methods and evaluation report expressions of efficacy evaluation for removing of heavy metal by biological products. This Standard applies to the effect evaluation for removing of heavy metals from water by biological products.2 Normative referencesThe following documents are indispensable for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document. GB/T 6682, Water for analytical laboratory use - Specification and test methods GB/T 5750.6, Standard examination methods for drinking water - Metal parameters3 Terms and definitionsThe following terms and definitions are applicable to this document. 3.1 Biological products Products which are made by biotechnology. Note: Biological products in this Standard specifically refer to microorganisms or enzyme products that have the function of removing heavy metals.4 General principles4.1 Evaluation can only be carried out when the label or manual of the biological product has a clear name of the microorganism or enzyme product. 4.2 Scientifically and fairly carry out efficacy evaluation work; the evaluation process and evaluation method are scientific. 4.3 Use statistical methods for comparison; no forgery or alteration of inspection reports is allowed.5 Basic requirements5.1 In accordance with the requirements of relevant laws, regulations, standards and product manuals, receive, store, hand over, prepare, recycle, and return/destroy samples; formulate corresponding management systems and procedures. 5.2 The laboratory that conducts the evaluation of microbial products shall meet the grade-1 requirements of bio-safety. 5.3 The type, quantity, performance, range and accuracy of the instruments and equipment used in the evaluation shall be able to meet the needs of the efficacy evaluation. The utensils and materials required for the efficacy evaluation of microbial products shall be treated aseptically. 5.4 The reagents used in the evaluation shall be analytical reagents; the water shall conform to the grade-II water that is specified in GB/T 6682. 5.5 The heavy metals used in the evaluation are made of heavy metal standards whose purity is greater than or equal to 98%, or standard materials which are certified by the country and awarded with a standard material certificate, and formulated into a standard solution of a certain mass concentration. The medium shall be selected according to the type of microorganisms. 5.6 After the evaluation experiment is over, the experimental materials shall be treated in a harmless manner.6 Evaluation methods6.1 Test design The test design shall meet the requirements of Table 1. sample mass concentration, pH, temperature and time, to determine the reaction system. 6.5 Removing of heavy metals 6.5.1 Removing of microbiological products Take 9 pieces of 250 mL triangular flasks, including 3 for blank samples, 3 for test samples and 3 for deactivated samples. According to the substrate mass concentration and the volume of addition of microbial products, which are determined by the optimal reaction system, prepare a culture solution whose reaction system is 100 mL; perform the removal reaction under the optimal reaction system conditions. 6.5.2 Removing of enzyme products Take 9 pieces of 50 mL centrifuge tubes, including 3 for blank samples, 3 for test samples and 3 for deactivated samples. According to the volume of addition of enzyme products and the concentration of the substrate, which are determined by the optimal reaction system, prepare a reaction solution whose reaction system is 15 mL; perform the removal reaction under the optimal reaction system conditions. 6.6 Determination After the removal process, use a centrifuge; continue centrifugation at a speed of 6 000 r/min for (20±1) min; take the supernatant. Determine the mass concentration of heavy metals according to the method that is specified in GB/T 5750.6. 6.7 Calculation of heavy metal removal rate The heavy metal removal rate shall be calculated according to Formula (1): Where: R – removal rate, %; ρ0 – the mass concentration of heavy metals in the initial substrate at the beginning of the reaction, in micrograms per liter (μg/L); ρ1 – the mass concentration of heavy metals in the residual substrate after the reaction of the test sample, in micrograms per liter (μg/L); ......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 GB/T 39029-2020 be delivered?Answer: The full copy PDF of English version of GB/T 39029-2020 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 39029-2020_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 39029-2020_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 39029-2020 -- 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 GB/T 39029-2020?A step-by-step guide to download PDF of GB/T 39029-2020_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 39029-2020". 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 |
