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Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 25282-2010: Soil and sediment -- Sequential extraction procedure of speciation of 13 trace elements Status: Valid
Basic dataStandard ID: GB/T 25282-2010 (GB/T25282-2010)Description (Translated English): Soil and sediment -- Sequential extraction procedure of speciation of 13 trace elements Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: D53 Classification of International Standard: 73.080 Word Count Estimation: 10,181 Date of Issue: 2010-11-10 Date of Implementation: 2011-02-01 Quoted Standard: GB/T 6682; GB/T 14506.1 Regulation (derived from): National Standard Approval Announcement 2010 No.8 (Total No.163) Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the extraction conditions and extraction procedures-arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), mercury (Hs), molybdenum (Mo), manganese (Mn), of nickel (Ni), lead (Pb), antimony (Sb), weak acid selenium (Se) and zinc (Zn) 13 ten elements extractable, reducible, oxidizable, residual and water soluble. This standard applies to soils and sediments 13 five forms of elements extracted above. Warning: This standard may involve hazardous materials and equipment for safe operation, but the standard for use in safety-related issues did not say. Responsibility of the user of this standard to develop appropriate health and safety regulations, well before use should clarify its scope of application. GB/T 25282-2010: Soil and sediment -- Sequential extraction procedure of speciation of 13 trace elements---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. Soil and sediment. Sequential extraction procedure of speciation of 13 trace elements ICS 73.080 D53 National Standards of People's Republic of China 13 trace elements in soils and sediments Order form Fetcher Soilandsediment- Issued on. 2010-11-10 2011-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordAppendix A of this standard is an informative annex. The standard proposed by the People's Republic of China Ministry of Land Resources. This standard by the National Standardization Technical Committee of Land and Resources. This standard was drafted. National Geological Experimental Test Center. The main drafters of this standard. Wang Yaping, Xu Haruyuki, Wangsu Ming, Wang Lan, Anzai Yi, Huang Yi. This standard is the first release.IntroductionForm element is an important part of the ecological geochemical survey and evaluation, research and other elements of the migration and transformation of heavy circulating law To basis. Numerous studies show that migration of heavy metals and toxic trace elements depends mainly on their specific chemical forms and combinations status. As the actual work is difficult of strict form elements in the sample, it is commonly used to extract this alternative sequence determination of elements Form. Sequential extraction protocol is a concept relatively experimental operation sense, it simulates the natural and man-made changes in environmental conditions, according to the test Agents the ability to extract from weak to strong principles of rational use of a series of selective retention agents continuously dissolving different trace elements in mineral phases, the sample Different modes of occurrence of elements parsed. EC Standards Agency sequentially extracted Programme (BCRsequentialextracitonprocedure) It is one of the international program is currently the most widely used. EC Standards Agency sequentially extracted Programme (BCRsequentialextracitonprocedure) in three steps soils and sediments Meta Fractions sequential extraction procedure, the first step in the extraction of weak acid is acetic acid extractable, the second step of hydroxylamine hydrochloride solution extracted reducible, third Step hydrogen peroxide and ammonium acetate solution extracted oxidizable. The program has gone through 20 years of practice tests, carried out more than 20 times EU to participate in the famous laboratory comparison test, it is more mature in soil and sediment elemental speciation sequential extraction protocol. In order to solve different sequential extraction procedure, lack of data comparability, this standard to the EC Standards Board sequential extraction scheme based Foundation, combined with ecological geochemical survey and evaluation of the needs and characteristics, extracting weak acid extractable in their order, reducible and oxidizable three On the basis of morphology, and increase the residual water soluble. Increased water soluble extract individual samples, so as not to destroy the original EC Standards Agency sequentially extracted The integrity of the program. 13 trace elements in soils and sediments Order form Fetcher Warning. This standard may involve hazardous substances and safe operation of equipment, but the standard for use in safety-related issues did not say. Responsibility of the user of this standard to develop an appropriate health and safety procedures, and before use should clarify its scope.1 ScopeThis standard specifies the soil and sediment arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), mercury (Hg), molybdenum (Mo), Manganese (Mn), Nickel (Ni), lead (Pb), antimony (Sb), selenium (Se) and zinc (Zn) 13 elements weak acid extractable, reducible, oxidizable, residual And water soluble form of five sequential extraction conditions and extraction procedures. This standard applies to soil and sediment 13 extracted five elements of the form above.2 Normative referencesThe following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to reach an agreement on this standard is Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 14506.1 Silicate rocks - Part 1. Determination of water adsorption3 Terms and DefinitionsThe following terms and definitions apply to this standard. 3.1 Sequentially extracted sequentialextraction The physical properties (such as particle size, solubility, etc.) or chemical properties (e.g. binding state, reactivity, etc.) is different from the sample of one or a Group substance to be measured to classify sequentially extraction process. 3.2 Form speciation Form of an element that is the element in a system of specific chemical form of distribution. 3.3 Weak acid extractable mildacido-solublefraction Acetic acid solution to extract the elemental form. Mainly refers to electrostatically adsorbed on the surface of the soil and sediment particles can be released from the ion exchange element Fractions, carbonates and bound in the elemental form. 3.4 Reducible reduciblefraction Hydroxylamine hydrochloride solution extracted elemental form. Mainly refers to the elemental form is iron oxide, manganese retention of. 3.5 Oxidizable oxidisablefraction Hydrogen peroxide solution and a solution of ammonium acetate extract elemental form. Mainly refers to the elemental form of organic matter and active groups combined, and sulfur Element compounds are oxidized to form soluble sulfate form. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 25282-2010_English be delivered?Answer: Upon your order, we will start to translate GB/T 25282-2010_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. 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