Abstract:A modified nano-particle carbon black (nano-CB) was used as amendment for controlling the bioavailability of Cu and Zn in soil by cultivation experiment. The nano-CB significantly reduced the bioavailability of soil Cu and Zn. Compared with the control, the bioavailable soil Cu concentration decreased about 47.3%, 72.0% and 80.89% after 60days of cultivation with 1%, 3%, and 5% nano-CB, respectively; bioavailable soil Zn concentration decreased by 3.0%, 17.7% and 43.6%, respectively. The treatment of packet application was not better than mixed application and needed more time for equilibrium, but the CB which adsorbed heavy metal from soil could be easily taken out. Nano-CB amendment significantly increased biomass of ryegrass and reduced the uptake of Cu and Zn concentration in ryegrass. Application of nano-CB reduced exchangeable and cabonate-bound soil Cu and Zn in ryegrass rhizosphere, and increased the proportion of organic/sulphide fractions.
王汉卫, 王玉军, 陈杰华, 王慎强, 成杰民, 周东美. 改性纳米碳黑用于重金属污染土壤改良的研究[J]. 中国环境科学, 2009, 29(4): 431-436.
WANG Han-Wei, WANG Yu-Jun, CHEN Jie-Hua, WANG Shen-Qiang, CHENG Jie-Min, ZHOU Dong-Mei. Application of modified nano-particle black carbon for the remediation of soil heavy metal pollution.. CHINA ENVIRONMENTAL SCIENCECE, 2009, 29(4): 431-436.