Research Article

Effects of Nanoscale Carbon Black Modified by HNO3 on Immobilization and Phytoavailability of Ni in Contaminated Soil

Figure 5

Effect of MCB on DTPA-extractable Ni in soil. Ni2+ was added to soil at the ratio of 100 mg·kg−1 and the MCB was added at the ratio of 0, 0.5%, and 1%, respectively.