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利用焊接工艺制备的高钙线,钙棒包裹非常紧密,很难用物理手段取出芯粉或用水溶解钙棒,不能使用差减法精准测定高钙线的芯粉重量。文章使用不同浓度的盐酸和醋酸对高钙线浸泡处理,观察反应效果,使用ICP光谱仪检测溶液铁浓度,分析酸对铁皮的腐蚀情况。确定使用醋酸(1+9)对高钙线进行处理,反应迅速、完全,铁皮基本无损失,高钙线芯粉重量标准偏差(RSD,n=11)在0.1%~0.5%之间,满足检测方法要求,实现了高钙线芯粉重量快速、准确测定。
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包 杰(1990-),男,内蒙古包头市人,工程师,现从事化学分析方法研发工作。
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28(11):1-6., articleTitle=电感耦合等离子体发射光谱法测定钢铁及合金中析出相组成成分的研究, refAbstract=null), Reference(id=1187087122071699978, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187027205696667886, doi=null, pmid=null, pmcid=null, year=2010, volume=17, issue=4, pageStart=1, pageEnd=8, url=null, language=null, rfNumber=[5], rfOrder=4, authorNames=魏良江, journalName=广东微量元素科学, refType=null, unstructuredReference=魏良江. 电感耦合等离子体原子发射光谱分析研究进展[J].
广东微量元素科学,
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17(4):1-8., articleTitle=电感耦合等离子体原子发射光谱分析研究进展, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1187087118057750995, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187027205696667886, xref=null, ext=[AuthorCompanyExt(id=1187087118061945300, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187027205696667886, companyId=1187087118057750995, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Chemical Inspection Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1187087118070333909, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187027205696667886, companyId=1187087118057750995, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=内蒙古包钢钢联股份有限公司化检验中心,内蒙古 包头 014010)])], figs=[ArticleFig(id=1187087120976986620, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187027205696667886, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 样品 | 水 | 盐酸 | 醋酸 |
| 1# | 溶解不完全,铁皮表面生锈, 7天还未完全反应 | 盐酸浓度为(1+1),反应剧烈, 钙棒反应完全 | 醋酸浓度为(1+1),反应剧烈, 钙棒反应完全 |
| 2# | 溶解不完全,铁皮表面生锈, 7天还未完全反应 | 盐酸浓度为(1+3),反应剧烈, 钙棒反应完全 | 醋酸浓度为(1+3),反应剧烈, 钙棒反应完全 |
| 3# | 溶解不完全,铁皮表面生锈, 7天还未完全反应 | 盐酸浓度为(1+9),反应剧烈, 钙棒反应完全 | 醋酸浓度为(1+9),反应剧烈, 钙棒反应完全 |
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不同溶解方式的溶解效果
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| 样品 | 水 | 盐酸 | 醋酸 |
| 1# | 溶解不完全,铁皮表面生锈, 7天还未完全反应 | 盐酸浓度为(1+1),反应剧烈, 钙棒反应完全 | 醋酸浓度为(1+1),反应剧烈, 钙棒反应完全 |
| 2# | 溶解不完全,铁皮表面生锈, 7天还未完全反应 | 盐酸浓度为(1+3),反应剧烈, 钙棒反应完全 | 醋酸浓度为(1+3),反应剧烈, 钙棒反应完全 |
| 3# | 溶解不完全,铁皮表面生锈, 7天还未完全反应 | 盐酸浓度为(1+9),反应剧烈, 钙棒反应完全 | 醋酸浓度为(1+9),反应剧烈, 钙棒反应完全 |
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| 样品 | 盐酸酸度 | 铁浓度/% | 醋酸酸度 | 铁浓度/% |
| 1# | (1+1) | 5.2 | (1+1) | 0.12 |
| (1+3) | 2.6 | (1+3) | 0.048 |
| (1+9) | 1.1 | (1+9) | 0.001 5 |
| 2# | (1+1) | 5.5 | (1+1) | 0.13 |
| (1+3) | 3.5 | (1+3) | 0.05 |
| (1+9) | 1.4 | (1+9) | 0.001 1 |
| 3# | (1+1) | 4.8 | (1+1) | 0.10 |
| (1+3) | 2.3 | (1+3) | 0.025 |
| (1+9) | 1.08 | (1+9) | 0.000 9 |
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反应后溶液中铁浓度
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| 样品 | 盐酸酸度 | 铁浓度/% | 醋酸酸度 | 铁浓度/% |
| 1# | (1+1) | 5.2 | (1+1) | 0.12 |
| (1+3) | 2.6 | (1+3) | 0.048 |
| (1+9) | 1.1 | (1+9) | 0.001 5 |
| 2# | (1+1) | 5.5 | (1+1) | 0.13 |
| (1+3) | 3.5 | (1+3) | 0.05 |
| (1+9) | 1.4 | (1+9) | 0.001 1 |
| 3# | (1+1) | 4.8 | (1+1) | 0.10 |
| (1+3) | 2.3 | (1+3) | 0.025 |
| (1+9) | 1.08 | (1+9) | 0.000 9 |
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| 样品 | 反应时间/min | 钙棒状态 |
| 4#-1 | 30 | 未反应完全 |
| 4#-2 | 40 | 有少量残余 |
| 4#-3 | 60 | 反应完全 |
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反应时间实验数据
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| 样品 | 反应时间/min | 钙棒状态 |
| 4#-1 | 30 | 未反应完全 |
| 4#-2 | 40 | 有少量残余 |
| 4#-3 | 60 | 反应完全 |
), ArticleFig(id=1187087121392222722, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187027205696667886, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 样品 | 物理手段 | 醋酸溶解 | 差值 |
| 5# | 58.9 | 58.7 | 0.2 |
| 6# | 63.5 | 63.6 | -0.1 |
| 7# | 61.5 | 61.4 | 0.1 |
| 8# | 57.8 | 57.9 | -0.1 |
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使用物理手段和醋酸溶解的芯粉重量 g/m
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| 样品 | 物理手段 | 醋酸溶解 | 差值 |
| 5# | 58.9 | 58.7 | 0.2 |
| 6# | 63.5 | 63.6 | -0.1 |
| 7# | 61.5 | 61.4 | 0.1 |
| 8# | 57.8 | 57.9 | -0.1 |
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| 样品 | 芯粉重量 |
| 9#-1 | 59.4 |
| 9#-2 | 59.6 |
| 9#-3 | 59.3 |
| 9#-4 | 59.5 |
| 9#-5 | 59.5 |
| 9#-6 | 59.4 |
| 9#-7 | 59.2 |
| 9#-8 | 59.4 |
| 9#-9 | 59.5 |
| 9#-10 | 59.4 |
| 9#-11 | 59.6 |
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精密度实验 g/m
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| 样品 | 芯粉重量 |
| 9#-1 | 59.4 |
| 9#-2 | 59.6 |
| 9#-3 | 59.3 |
| 9#-4 | 59.5 |
| 9#-5 | 59.5 |
| 9#-6 | 59.4 |
| 9#-7 | 59.2 |
| 9#-8 | 59.4 |
| 9#-9 | 59.5 |
| 9#-10 | 59.4 |
| 9#-11 | 59.6 |
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