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. Author manuscript; available in PMC: 2022 Feb 1.
Published in final edited form as: Environ Sci Pollut Res Int. 2020 Oct 2;28(6):6758–6770. doi: 10.1007/s11356-020-10973-z

Table 1.

Linear regression for the standard curve of each metal

Metal Linearity, r2 Intensity of blank (ppb) LOD (ppb) Percent recovery
As 0.9998 4.89E-2 2 100.6%
Cd 0.9997 7.46E-4 2 103.73%
Hg >0.995 0.02 0.04 102.8%
Pb 0.9995 3.03E-3 2 103.1%