原子荧光光谱法测定五氧化二磷中的砷  

Determination of Arsenic Content in Phosphorus Pentoxide by Atomic Fluorescence Spectroscopy Method

作　　者：李少华 白帆 孔涛 罗兰 杨智蓉 寸杰 LI Shaohua;BAI Fan;KONG Tao;LUO Lan;YANG Zhirong;CUN Jie(Yunnan Provincial Institute of Product Quality Supervision and Inspection,Kunming 650032,China;National Phosphorus Chemical Product Inspection and Testing Center(Yunnan),Kunming 650032,China)

机构地区：[1]云南省产品质量监督检验研究院,云南昆明650032 [2]国家磷化工产品检验检测中心(云南),云南昆明650032

出　　处：《湿法冶金》2024年第4期466-471,共6页Hydrometallurgy of China

摘　　要：研究了采用原子荧光光谱法测定五氧化二磷中的砷,确定了酸介质、酸度、还原剂浓度、预还原剂和掩蔽剂。结果表明:方法在1.0~50.0μg/L范围内线性良好,相关系数r>0.999,检出限为0.064μg/L,定量限为0.21μg/L;8次样品分析结果的相对标准偏差(RSD)为1.94%,加标回收率为92.87%~101.30%,检验结果与DDTC银盐法无明显差异。该法操作更便捷,所用试剂少,是一种测定五氧化二磷中砷含量的可靠方法。The determination of arsenic content in phosphorus pentoxide by atomic fluorescence spectroscopy method was studied,and the acid medium,acidity,reducing agent concentration,pre reducing agent,and masking agent were determined.The results indicate that the method has good linearity in the range of 1.0~50.0μg/L,the correlation coefficient is r>0.999,the detection limit is 0.06μg/L,quantification limit is 0.21μg/L.The relative standard deviation(RSD)of the 8 sample analysis results is 1.94%,and the spiked recovery rate are 92.87%~101.30%.The test results show no significant difference from the DDTC silver salt method,and this method is a reliable method for detecting arsenic content in phosphorus pentoxide,because it is more convenient and less reagent used.

关 键 词：原子荧光光谱法 DDTC银盐法 五氧化二磷 砷 测定 分析 

分 类 号：O657.31[理学—分析化学]