称量定容法与体积定容法应用于ICP-AES的对比分析
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摘要
列出称量定容法和体积定容法的理论公式,并分析两者的异同;比较分析不同酸度下称量定容法和体积定容法在ICP-AES中的酸度影响。分析结果表明:在ICP-AES法中,用称量定容法可以更好地校正溶液密度、粘度对分析结果的不利影响;用称量定容法制备钢标准物质溶液,并建立钢中多元素的校准曲线,曲线线性关系良好。称量定容法和体积定容法对比分析不同基体样品,结果基本一致。
The similarities and differences of constant mass dilution method and constant volume dilution method were researched by listing their theoretical formulas. The influence of different acidities by two methods were compared in ICP-AES,and it is found that constant mass dilution method can better adjust the negative effects of the density and viscosity of sample solutions on analysis results. Standard substances of steels were prepared by constant mass dilution method,and the multi-element calibration curves were established. The results show that the linear relationships were good. The analysis results of different matrix samples prepared by these two methods were compared,and the results were found to be consistent with each other.
The similarities and differences of constant mass dilution method and constant volume dilution method were researched by listing their theoretical formulas. The influence of different acidities by two methods were compared in ICP-AES,and it is found that constant mass dilution method can better adjust the negative effects of the density and viscosity of sample solutions on analysis results. Standard substances of steels were prepared by constant mass dilution method,and the multi-element calibration curves were established. The results show that the linear relationships were good. The analysis results of different matrix samples prepared by these two methods were compared,and the results were found to be consistent with each other.
引文
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[10]钱薇,唐昊冶,王如海,等.一次消解土壤样品测定汞、砷和硒[J].分析化学,2017,45(8):1215-1221.
[2]全国有色金属标准化技术委员会.GB/T 4698.1-2017海绵钛、钛及钛合金化学分析方法第1部分:铜量的测定火焰原子吸收光谱法[S].北京:中国标准出版社,2017.
[3]HB 20241.7-2016高温合金化学成分光谱分析方法第7部分:电感耦合等离子体原子发射光谱法测定铝、钴、铜、铁、锰、钼、钛含量[S].北京:中国航空综合技术研究所,2016.
[4]全国稀土标准化技术委员会.GB/T 12690.13-2003稀土金属及其氧化物中非稀土杂质化学分析方法钼、钨量的测定电感耦合等离子体发射光谱法和电感耦合等离子体质谱法[S].北京:中国标准出版社,2004.
[5]符靓,施树云.电感耦合等离子体质谱法测定食用植物油中的磷和硅[J].分析化学,2017,45(8):1222-1226.
[6]申素素,梁大鹏,陈焕文,等.聚丙烯腈和二氧化硅复合纤维膜富集-高分辨质谱法测定烟气中的有害化合物[J].分析化学,2017,45(2):253-260.
[7]林建原,金明,冯敬妮.浊点萃取-分光光度法测定水样中稀土元素镧和钕[J].稀土,2012,33(3):40-44.
[8]任慧,刘广华,李蓓.AAS法测定纯铼中等痕量元素K试验研究[J].失效分析与预防,2015,10(6):389-392.
[9]邹慧君,汪正,李青,等.悬浮液进样-液体阴极辉光放电原子发射光谱法测定高纯氮化硅粉体中微量杂质元素[J].分析化学,2017,45(7):973-979.
[10]钱薇,唐昊冶,王如海,等.一次消解土壤样品测定汞、砷和硒[J].分析化学,2017,45(8):1215-1221.