Abstract: The present paper covers the influence of ten types of surfactants on absorption signal of strontium in acetylene air flameThe absorption signal of strontium was increased by 50% in the presence of sulfosalicylic acidAt the same time it can reduce and eliminate the interference of foreign ionsThe determination of strontium by micro-sampling flame atomic absorption spectrometry with 0.5% sulfosalicylic acid as a matrix modifier was proposedThe method can be applied to the determination of strontium in wild cabbage with the satisfactory result.

Key words: Sulfosalicylic acid, Micro-sampling, Flame atomic absorption spectrometry, Strontium