Minimizing Chloride Interferences Produced by Calcium Chloride in the Determination of Cd by Graphite Furnace Atomic Absorption Spectrometry

Table 2

Equation of calibration range, limits of detection (LOD) and quantification (LOQ), and characteristic mass (𝑚₀) for peak absorption.

Calibration range; (μg L^−1)	Equation of calibration curves	LOD; (ng L^−1)	LOQ; (ng L^−1)	𝑚0; (pg)
0.01–2	Abs = 0.2579[Cd] + 0.0039; 𝑅^2=0.9998	10.7	35.6	0.34
0.01–3.33	Abs = −2.8⋅10^−2[Cd]^2 + 0.3125[Cd] + 0.0123; 𝑅^2=0.9993	10.7	35.6	0.31

Abs means integrated absorbance and [Cd] is in μg L⁻¹. Units for slopes are in L μg⁻¹.