Beer’s Law requires narrow light so

Beer’s Law requires narrow light source bandwidth relative to the absorption bandwidth  linear relationship between absorbance and analyte concentration.
AAS absorption bandwidths are very narrow (0.002 - 0.005 nm) compared to monochromator slit widths (≥ 0.1 nm)  which results in nonlinear calibration curves.
Each element has different set of energy levels and lines very narrow  should be very selective
This problem is overcome by using line sources with narrow emission bands

Hasil (Bahasa Indonesia) 1:

Beer's Law membutuhkan sumber cahaya yang sempit bandwidth relatif terhadap penyerapan bandwidth  linear hubungan antara daya serap dan konsentrasi analyte.AAS penyerapan bandwidth sangat sempit (0,002 - 0.005 nm) dibandingkan dengan monochromator celah lebar (≥ 0.1 nm)  yang mengakibatkan kurva kalibrasi nonlinier. Setiap elemen memiliki set berbeda tingkat energi dan  sangat sempit baris harus sangat selektif Masalah ini diatasi dengan menggunakan sumber-sumber baris dengan band-band sempit emisi