Credit: Circular Economy, Tsinghua University Press
From the distribution pattern of arsenic in the above sampling sites, the test values of regional construction projects such as in Bao’an, Nanshan, Futian, Luohu, and Guangming were lower than the soil background value of Shenzhen, followed by Longhua. The test values of Pingshan and other regional construction projects were lower than the risk screening value of the heavy metal in Shenzhen, while that in Dapeng, Longgang, and other regional construction projects were higher than the risk screening value of the heavy metal in Shenzhen but lower than the risk control value.