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选择深孔,较大孔径电极,多装样,并采用卤化物为载体,借助卤化反应使待测元素提早蒸发,对降低检测限,提高分析效率是行之有效的,这类方法之间因载体、电极规格和工作条件不同而有区别。针对1:5石化探样品的测试,我们设计了一种“深孔空腔电极,,电极底部利用接触电阻“加热”;以碘化铵为载体,在高温作用下产生“分馏”效率;即“深孔空腔加热载体蒸馏”,使待测元素进入电弧等离子体,用发射光谱法进行测定,
Select deep hole, larger aperture electrode, multi-loading, and the use of halide as a carrier, with the aid of halogenated elements to be pre-test element evaporation, to reduce the detection limit, to improve the efficiency of the analysis is effective, between these methods Carrier, electrode specifications and working conditions vary. For the test of 1: 5 geochemical exploration sample, we designed a “deep-hole cavity electrode”, which uses the contact resistance “heating” at the bottom of the electrode. With ammonium iodide as the carrier, it produces “fractional distillation” efficiency under the action of high temperature; “Deep hole cavity heating carrier distillation,” the element to be tested into the arc plasma, measured by emission spectrometry,