GSO ISO 12743:2014由GSO 发布于 2014-12-25。
GSO ISO 12743:2014在国际标准分类中归属于: 73.060.99 其他金属矿。
GSO ISO 12743:2014 铜、铅、锌和镍的浓度金属和水分含量测定的取样方法的最新版本是哪一版?
最新版本是 GSO ISO 12743:2014 。
This International Standard sets out the basic methods for sampling copper, lead, zinc and nickel concentrates from moving streams and stationary lots, including stopped-belt sampling, to provide samples for chemical analysis, physical testing and determination of moisture content, in accordance with the relevant International Standards. Where the concentrates are susceptible to significant oxidation or decomposition, it is necessary to use a common sample for moisture determination and chemical analysis to eliminate bias (see ISO 10251). In such cases, the common sample must be sufficiently representative, i.e. unbiased and sufficiently precise, for chemical analysis and determination of moisture content. Any large agglomerates (> 10 mm) present in the primary sample should be crushed prior to further sample processing. Sampling of concentrates in slurry form is specifically excluded from this International Standard. Stopped-belt sampling is the reference method for collecting concentrate samples against which mechanical and manual-sampling procedures may be compared. Sampling from moving streams is the preferred method. Both falling-stream and cross-belt samplers are described. Sampling from stationary lots is used only where sampling from moving streams is not possible. The procedures described in this International Standard, for sampling from stationary lots, only minimize some of the systematic sampling errors.
测定不含锡的纯铜中微量锑 测定茶叶中汞 测定纯铝金属材料中铋 测定纯镍金属材料中铋 测定粗铅中铋 测定催化剂中钯,铂,铱 测定大米粉中锌 测定大苏打中砷 测定稻米中锌 测定低合金钢中锰,钼 测定地下水中铜,镉 测定地质样品中钴 测定电镀废水中铬(VI)和总铬量,镉 测定电解铜中铋 测定定影液中银 测定独居石中铈组稀土 测定废氢化汞触媒浸取液中汞 测定废水中铈组稀土,金,镉,铜 测定钢铁中铈组稀土总量...
适用于电子器件用金镍钎料中镍含量的测定。SJ/T 11029-1996SJ/T 11030-2015电子器件用金铜及金镍钎料中杂质铅、锌、磷的ICP-AES测定方法本标准规定了用ICP-AES测定铅、磷、锌的测试方法。...
③若水样中几种离子含量相差较大,为了结果的准确度,宜采用微分测定技术,选用不同灵敏度档分别进行测定。例如,锌和镍由于峰电位比较接近,最好能分別测定。④当水样中几种离子的浓度比较接近时,则几种元素可同时测定。钴干扰锌的测定,锌氰络合物是非极谱活性物质,测定前应在通风中加盐酸煮沸以除去HCN。高浓度铜对剩镍不利,可加入化物络合铜、锌而测镍。...
本文讨论采用不同前处理方法消解样品,用等离子光谱法测定土壤中的铬、铅、镍、铜和锌的含量,研究总结了等离子光谱法测定重金属铬、铅、镍、铜和锌的含量的分析方法,该方法具有简单、分析速度快、含量范围宽、准确度高、精密度高、重现性好、一次性称样、污染小、成本低、能同时测定多种元素等特点。...
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