石墨炉原子吸收测定银的灵敏度很高,可以检出10~(-13)g 银。但由于一般的管壁原子化方法基体影响严重,对于具有复杂基体的试样都需要事先经过萃取等手段,使银富集并分离大量基体后才能获得好的结果。L′vov 提出的石墨炉平台技术,由于平台主要是靠热辐射升温,原子化时温度到达时间滞后,使在近于恒温条件下实现原子化,减少了基体影响。Slavin 等提出了 STPF 的一整套办法,包括使用 L′vov 平台、最大功率升温、原子化阶段停气、基体改进剂、峰面积积分以及灰化与原子化阶段有尽可能小的温差、有效的自动校正背景和仪器具有快速响应的电子系统等,可以大大减少甚至完全消除基体影响,直接分析 Graphite furnace atomic absorption determination of the high sensitivity of silver, can detect 10 ~ (-13) g silver. However, due to the serious influence of the general substrate wall atomization method, the samples with complex substrates need to be subjected to extraction beforehand to obtain good results after the silver is enriched and a large amount of matrix is ​​separated. Graphite furnace platform technology proposed by L’vov, as the platform is mainly by thermal radiation heating, atomization of the time to reach the time lag, so that under near-constant temperature to achieve atomization, reducing the matrix effect. Slavin et al. Proposed a set of approaches for STPF that included the use of the L’vov platform, maximum power ramp, gas phase stop, matrix modifier, peak area integral, and as little as possible temperature difference between ashing and atomization Automatic background correction and instrumentation with fast response electronics, etc., can greatly reduce or even eliminate matrix effects, direct analysis