SN/T 2004.6-2006 English PDF
Basic dataStandard ID: SN/T 2004.6-2006 (SN/T2004.6-2006)Description (Translated English): Determination of mercury in electrical and electronic equipment. Part 6: Cold vapor atomic absorption spectrometry Sector / Industry: Commodity Inspection Standard (Recommended) Classification of Chinese Standard: L04 Classification of International Standard: 31.020 Word Count Estimation: 7,789 Date of Issue: 2006-08-28 Date of Implementation: 2007-03-01 Quoted Standard: GB/T 6682 Regulation (derived from): ?National-accreditation-Science [2010] 50 Issuing agency(ies): General Administration of Customs Summary: This standard specifies the electrical and electronic products mercury cold vapor atomic absorption method. This standard applies to electrical and electronic products, the determination of mercury. SN/T 2004.6-2006: Determination of mercury in electrical and electronic equipment. Part 6: Cold vapor atomic absorption spectrometry---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. Determination of mercury in electrical and electronic equipment. Part 6. Cold vapor atomic absorption spectrometry Book of the People's Republic of China Entry and Exit Inspection and Quarantine Determination of mercury in electrical and electronic products Part 6. Cold atomic absorption method Released on.2006-08-28 2007-03-01 implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued ForewordThis part is the sixth part of SN/T 2004. Appendix A of this section is an informative annex. This part is proposed and managed by the National Certification and Accreditation Administration. This part is from the Jilin Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China, Shenzhen Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China, Chinese people The Guangdong Entry-Exit Inspection and Quarantine Bureau of the Republic of China and the Shanghai Entry-Exit Inspection and Quarantine Bureau of the People's Republic of The main drafters of this section. Chen Mingyan, Xu Liming, Zhong Zhiguang, Wei Biwen, Liu Li, Zheng Jianguo, Ma Shumin, Liu Zhihong, Han Dachuan, Wang Zhaohui, Wei Yuyou, Li Ying. This section is the first industry standard for entry-exit inspection and quarantine. Determination of mercury in electrical and electronic products Part 6. Cold atomic absorption method1 ScopeThis part of SN/T 2004 specifies methods for the determination of mercury in electronic and electrical products by cold atomic absorption. This section applies to the determination of mercury in electrical and electronic products.2 Normative referencesThe terms in the following documents become the provisions of this section by reference to this part of SN/T 2004. Quotations with dated , all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouragement is achieved under this section The parties to the agreement study whether the latest versions of these documents can be used. For undated references, the latest edition applies to this section. GB/T 6682 Analytical laboratory water specifications and test methods (GB/T 6682-1992, neq ISO 3696.1997)3 Method summaryFor metal materials in electrical and electronic products, it is directly treated by conventional acid digestion. For other materials, use closed high temperature pressure The tank-acid digestion treatment or the microwave digestion method dissolves mercury in the material into a soluble salt in the acid digestion solution. Determination of mercury into digested solution Cold atomic absorption measurements were performed in the instrument.4 reagentsUnless otherwise stated, all reagents were of analytical grade and the water was deionized water as specified in GB/T 6682. 4.1 Nitric acid. excellent grade pure. 4.2 Hydrochloric acid. excellent grade pure. 4.3 30% hydrogen peroxide. analytically pure. 4.4 Tetrafluoroboric acid. analytically pure. 4.5 Potassium Permanganate Solution (50g/L). Weigh 5.0g of potassium permanganate, place it in a 100mL brown bottle, dilute to 100mL with water. 4.6 Nitric acid-potassium dichromate solution. Weigh 0.05g potassium dichromate, dissolve in water, add 5mL nitric acid (4.1), dilute with water to 100mL. 4.7 Stannous chloride solution (100g/L). Weigh 10g of stannous chloride, dissolved in 20mL of hydrochloric acid (4.2), diluted with water to 100mL, Available when used. 4.8 Mercury standard stock solution. concentration 1mg/mL. 4.9 Mercury standard use solution. concentration 0.5μg/mL, diluted with nitric acid-potassium dichromate solution (4.6) with mercury standard stock solution (4.8) Formulated.5 Instruments and equipmentThe glass instruments used were soaked overnight with nitric acid (1+5) and rinsed repeatedly with deionized water. 5.1 Mercury analyzer. equipped with mercury hollow cathode lamp, gas drying device, mercury vapor absorption bottle. 5.2 Constant temperature drying oven. (0 ~.200) ° C, temperature control accuracy ± 5 ° C. 5.3 Pressure tank. Teflon liner and stainless steel jacket. ...... |
