Correction to: Bull Natl Res Cent

https://doi.org/10.1186/s42269-019-0068-z

Following publication of the original article (Abou El-Anwar et al. 2019), the authors reported two errors in the Reference:

  1. 1.

    “The productivity of soil (Salman: Geochemical and environmental studies on the territories west River, unpublished; Deshmukh and Aher 2014).” should be replaced with “The productivity of soil (Salman 2013; Deshmukh and Aher 2014).” in page 1;

  2. 2.

    The reference “Salman SA (2013) Geochemical and environmental studies on the territories west River Nile, Sohag Governorate Egypt. PhD Thesis, Al-Azhar Univ, Egypt, p 314”, needs to be added in the Reference list.