精矿中7种有害杂质元素进行了同时测定。5.2
本方法具有灵敏度高、试剂用量少,线性范围宽等优点。方法检出限低,精密度高,结果准确可靠。极大缩短了检测时间,提高了工作效率。
参考文献
[1]曹宏燕.冶金产品试验方法标准汇编(15上)[M ].北京:冶金
工业出版社,2008.
[2]辛仁轩.等离子体发射光谱分析[M ].3版.北京:化学工业出
版社,2018.
表4
正确度和精密度试验%
元素SiO 2CaO MgO Al 2O 3P 2O 5Cr 2O 3V 2O 5
10次样品测定结果
6.885,6.925,6.908,6.886,6.867,6.892,6.889,6.923,6.905,6.8850.705,0.712,0.723,0.709,0.712,0.705,0.708,0.710,0.712,0.7082.485,2.470,2.492,2.483,2.502,2.486,2.479,2.480,2.487,2.4923.280,3.279,3.298,3.302,3.279,3.310,3.289,3.292,3.290,3.2850.144,0.140,0.141,0.138,0.135,0.139,0.142,0.140,0.141,0.146
0.0575,0.0580,0.0582,0.0589,0.0590,0.0595,0.0579,0.0586,
0.0580,0.05890.505,0.510,0.520,0.515,0.508,0.519,0.513,0.515,0.521,0.508
平均值6.8950.7102.4863.2900.141
0.0585参考文献的格式
0.513
标准偏差0.02100.00520.00870.01100.00310.00070.0056
RSD 0.3040.7320.3500.3342.2001.2001.090极差0.0590.0180.0320.0310.0110.0020.016
标准值6.8800.7002.4803.2900.1440.0580.020
标准值不确定度0.0700.0200.0500.0700.0080.0050.020
表5
回收率试验%
元素名称SiO 2CaO MgO Al 2O 3P 2O 5Cr 2O 3V 2O 5
标准值6.880.702.483.290.1440.0580.020
加入量2.000.301.001.500.100.020.01
加标后测定值8.8500.9953.4604.7790.2430.07850.0299
回收量1.9700.2950.9801.4890.0990.02050.0099
回收率
98.598.398.099.399.0102.599.0
Determination of 7Harmful Impurity Elements in Titanium Concentrate
by Alkali Melting ICP-AES
MENG Lili
(Shandong Metallurgical Research Institute Co.,Ltd.,Jinan 250014,China )
Abstract:A new method for the determination of seven impurity elements in titanium concentrate,such as SiO 2,CaO,MgO,Al 2O 3,P 2O 5,Cr 2O 3and V 2O 5,is proposed,which is based on the mixture of anhydrous sodium carbonate and boric acid,sulfuric acid leaching and ICP-AES.The amount of various reagents,the measuring conditions of instruments and the selection of spectral lines were tested and discussed.The determination of titanium concentrate samples showed that the method has the advantages of high sensitivity,low amount of reagents and wide linear range.Methods the detection limit was low,the precision was high,and the results were accurate and reliable.
Key words:anhydrous sodium carbonate+boric acid melting;ICP-AES method;ilmenite;harmful impurity element
1
专著(普通图书、学位论文、技术报告、会议文集、汇
编、多卷书、丛书):
[序号]主要责任者.题名:其他题名信息[文献类型标志(电子文献必备,其他文献任选)].其他责任者(任选).版本项(第1版不标注).出版地:出版者,出版年:引文页码[引用日期(联机文献必备,其他电子文献任选)].获取和访问路径(联机文献必备).2
专著中的析出文献(从整本专著中析出的具有独立篇名的文献,包括论文汇编、会议文集等):
[序号]析出文献主要责任者.析出文献题名[文献类型标志].析出其他责任者∥专著主要责任者.专著题名.出版地:出版者,出版年:析出文献的页码[引用日期].获取和访问路径.3
连续出版物(有卷期号或年月顺序号,计划无限连续出版发行的出版物,如期刊、报纸等):
[序号]析出文献主要责任者.析出文献题名[文献类型标志].刊名:其他刊名信息,年,卷(期):页码[引用日期].获取和访问路径.
[序号]析出文献主要责任者.析出文献题名[文献类型
标志].报纸名:其他题名信息,年-月-日(版次)[引用日期].获取和访问路径.4
专利文献:
[序号]专利申请者或所有者.专利题名:专利国别,专利号[文献类型标志].公告日期或公开日期[引用日期].获取和访问路径.5
电子文献(电子书刊、数据库、电子公告等):[序号]主要责任者.题名:其他题名信息[文献类型标志/文献载体标志].出版地:出版者,出版年(更新或修改日期)[引用日期].获取和访问路径.
文献类型标志:普通图书M,会议录C,汇编G,报纸N,期刊J,学位论文D,报告R,标准S,专利P,数据库DB,计算机程序CP,电子公告EB。会议录包括座谈会、研讨会、学术年会等会议的文集;汇编包括多著者或个人著者的论文集,也可标注为M。电子文献载体类型标志如下:磁带MT,磁盘DK,光盘CD,联机网络OL。
注意责任者的著录方法:3人以下全部著录,3人以
上可只著录前3人,后加“,等”;外文用“,et al”。
参考文献著录格式(GB/T 7714—2015)
碱熔ICP-AES 法测定钛精矿中7种有害杂质元素含量孟丽丽2020年第6期
53