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铱催化高碘酸钾氧化钍试剂动力学光度法测定痕量铱
Kinetic spectrophotometric determination of trace iridium with oxidation of thoron by KIO_4</p> <span class="by"></span>
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<p class='class'><strong>文献类型：</strong>期刊文章</p><p class='author'><strong>作 者：</strong><b class='type_ico_id'></b>杨孝容[1] <b class='type_ico_id'></b>李祖碧[2] <b class='type_ico_id'></b>曹秋娥[3] </p><p class='en'> </p><p class='organ'><strong>机构地区：</strong><b class='type_ico_id'></b>[1]乐山师范学院化学系,四川614004 <b class='type_ico_id'></b>[2]云南大学成人教育学院 <b class='type_ico_id'></b>[3]云南大学生化学院化学系 </p><p class='from'><strong>出 处：</strong><a target='_blank'><b class='type_ico_id'></b></a>《分析试验室》</p><p class='fund'><strong>基 金：</strong>.NULL.</p><p class='class'><strong>年 份：</strong>2002</p><p class='class'><strong>卷 号：</strong>21</p><p class='class'><strong>期 号：</strong>4</p><p class='class'><strong>起止页码：</strong>37-39</p><p class='class'><strong>语 种：</strong>中文</p><p class='class'><strong>收录情况：</strong>BDHX、BDHX2000、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2011_2012、JST、PROQUEST、RCCSE、RSC、ZGKJHX、核心刊</p><p class='abstrack'><strong>摘 要：</strong>在磷酸和热水浴中,铱(Ⅳ)对高碘酸钾氧化钍试剂的反应具有催化作用,依此建立了测定铱的新催化光度法。铱的浓度在0.20μg/10mL～2.0μg/10mL范围内与催化反应速率有良好的线性关系,检出限为6.24×10-3μg/mL。对0.50μg/10mLIr(Ⅳ)测定的相对标准偏差为2.0%(n=10)。该催化反应对铱(Ⅳ)和钍试剂分别为一级反应,其表观活化能为81.66kJ/mol。实验了40多种共存离子的影响,大多数的常见离子不干扰。用该方法测定岩矿和冶金产品中铱的含量,相对标准偏差为1.0%～1.1%,加标回收率为95%～100%。</p><p class='subject'><strong>关 键 词：</strong>氧化 <b class='type_ico_id'></b>动力学 测定 <b class='type_ico_id'></b>铱 <b class='type_ico_id'></b>高碘酸钾 <b class='type_ico_id'></b>钍试剂 <b class='type_ico_id'></b>催化光度法 痕量分析 </p><p class='class'><strong>分 类 号：</strong>O614.825] O657.32[化学类] </p>
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