This method has been used before”, “the Hazard Quotients (HQ) values between 1 and 10 indicate likely damage to human health”.
Page 3, lines 99-100: please, add references for the following information South China's economic conditions are better than in North China, but the environmental pollution is worse. The site we studied is an e‒waste dismantling area with severe soil pollution that is typical of e‒waste dismantling areas in South China.