The section was revised and information regarding solution standards and detection limit was added. (M&M. subheading 2.2). Chemical analyses and descriptive statistics of the results b) It is necessary to explain the method of sampling using the appropriate literature.
“Materials & Method" section: a) There is not adequate information regarding quality control of the chemical analyses. Authors should report the detection limits and the recovery of the analytic methods used, along with and the standard solutions for the calibration of the instruments.