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常规火焰原子吸收光谱法具有装置简单、分析速度快、测量精度高、基体效应小等优点,在各个领域中得到广泛应用。但是,由于火焰法的雾化效率低(大约只有10％的溶液进入火焰),原子在火焰中停留时间短(约10~(-3)秒)等原因,限制了火焰原子吸收光谱法的灵敏度。原子捕集是一种在火焰中浓缩待测原子的预富集技术,它能提供极高的原子密度供原子吸收(或荧光)测量。与溶剂萃取或离
Conventional flame atomic absorption spectrometry has the advantages of simple device, fast analysis, high measuring accuracy and small matrix effect, and is widely used in various fields. However, due to the low atomization efficiency of the flame method (only about 10% of the solution enters the flame) and the short residence time of the atom in the flame (about 10 to 3 seconds), the sensitivity of flame atomic absorption spectrometry is limited . Atomic capture is a preconcentration technique that concentrates the atoms to be detected in a flame and provides a very high atom density for atomic absorption (or fluorescence) measurements. Extract with or without solvent