微波消解-火焰原子吸收光谱法测定过磷酸钙中铅  

Determination of Pb in SSP by microwave digestion-FAAS

作　　者：陈昕 CHEN Xin(Jnstitution of Supervision and Inspection Product Quality of Shaanxi Province,Xi’an 710048,China)

机构地区：[1]陕西省产品质量监督检验研究院,陕西西安710048

出　　处：《磷肥与复肥》2020年第12期39-40,共2页Phosphate & Compound Fertilizer

摘　　要：对GB/T 22349-2009中铅含量测定样品前处理方法进行优化,过磷酸钙试样经过浓硝酸、过氧化氢微波消解后,采用火焰原子吸收光谱法测定铅含量。该方法所得标准曲线相关系数R2=0.9997,加标回收率为95.8%~106.9%,准确度高,精密度好,试样消耗少,适合大批量过磷酸钙样品中铅的分析检测。The pre-treatment method of Pb content determination in the national standard GB/T 22349-2009 is optimized.After microwave digestion with concentrated nitric acid and hydrogen peroxide,the Pb content in SSP is determined by FAAS.The correlation coefficient of the standard curve obtained by this method is 0.9997,and the recovery rate is 95.8%-106.9%.It has high accuracy,good precision and less sample consumption,which is suitable for the analysis of large quantities of SSP samples.

关 键 词：微波消解 火焰原子吸收光谱法 过磷酸钙 铅 

分 类 号：TQ440.7[化学工程—化学肥料工业]