critical review of the impact of repeated single-metal and multi-metal pollution events on soil quality

(6)critical review of the impact of repeated single-metal and multi-metal pollution events on soil quality
this component requires to critically review a scientific journal articles.when critically reviewing the article highlight, where possible, the key components of risk assessment present in the paper: i.e. Hazaed identification , exposure, dose response, risk quantification and risk management.
the critical assessment should include statements regarding quality and appropriateness of method, results and conclusion.
the article link : http://ac.els-cdn.com.ezproxy.mmu.ac.uk/S0045653514006717/1-s2.0-S0045653514006717-main.pdf?_tid=5bcfe5c2-5311-11e4-b707-00000aab0f01&acdnat=1413229654_3537b8a2f13495250a60c2e8aab02faa reference:
Burges A, Epelde L, Garbisu C. (2015) Impact of repeated single-metal and multi-metal pollution events on soil quality. Chemosphere, 120, 8–15.