地球化学样品中硫、铁、铋、铅、锑、砷、汞等元素的组合高效测定方法

Study on the combination and high efficiency determination of sulfur,iron,bismuth,lead,antimony,arsenic,and mercury in geochemical samples

通过王水-水浴溶解样品对同一底液采用不同的处理手段后,实现电感耦合等离子体发射光谱仪测定铁、硫,电感耦合等离子体质谱仪测定铋和铅,原子荧光光谱仪测定锑、砷、汞等元素。方法的准确度在0.001~0.035之间,精密度在0.076%~8.90%之间。该方法通过共享使用同一底液,3种仪器设备分别测试,达到组合、高效测定多种元素的目的,具有操作简单,测定范围广,环境要求低,抗干扰能力强,能够满足现行规范《多目标区域地球化学调查规范(1∶250000)》(DZ/T 0258-2014)要求。

Aqua regia bath solution samples were used to treat the same bottom solution differently so that the determination of iron and sulfur by inductively coupled plasma emission spectrometer,bismuth and lead by inductively coupled plasma mass spectrometer,and elements such as antimony,arsenic and mercury by atomic fluorescence spectrometer was realized.Its determination accuracy was from 0.001to 0.035 with precision from 0.076%to 8.90%.Three kinds of instruments were used for the test respectively with the same base solution,which achieved the goal of combinatorial and efficient determination of multiple elements.Such method was characterized by simple operation,wide measurement range,low environmental requirements,strong anti-jamming capability,meeting the current requirements of Multipurpose Regional Geochemical Survey Specification(1:250000)(DZ/T 0258-2014).