National Institute for Agro-Environmental Sciences, Soil Environmental Division, 3-1-3 Kannondai, Tsukuba, Ibaraki 305-8604, Japan.
Environ Pollut. 2011 Oct;159(10):2449-53. doi: 10.1016/j.envpol.2011.06.035. Epub 2011 Jul 22.
Activated charcoal (AC) amendment has been suggested as a promising method to immobilize organic contaminants in soil. We performed pot experiments with rice and soybean grown in agricultural soil polluted by aromatic arsenicals (AAs). The most abundant AA in rice grains and soybean seeds was methylphenylarsinic acid (MPAA). MPAA concentration in rice grains was significantly reduced to 2% and 3% in 0.2% AC treated soil compared to untreated soil in the first year of rice cultivation. In the second year, MPAA concentration in rice grains was significantly reduced to 15% in 0.2% AC treated soil compared to untreated soil. MPAA concentration in soybean seeds was significantly reduced to 44% in 0.2% AC treated soil compared to untreated soil. AC amendment was effective in reducing AAs in rice and soybean.
活性炭（AC）改良被认为是一种很有前途的方法，可以固定土壤中的有机污染物。我们在受芳香族砷（AA）污染的农业土壤中进行了水稻和大豆的盆栽实验。在水稻籽粒和大豆种子中含量最丰富的 AA 是甲基苯胂酸（MPAA）。与未处理的土壤相比，在第一年种植水稻时，0.2%AC 处理土壤中水稻籽粒中的 MPAA 浓度显著降低至 2%和 3%。第二年，与未处理的土壤相比，0.2%AC 处理土壤中水稻籽粒中的 MPAA 浓度显著降低至 15%。与未处理的土壤相比，0.2%AC 处理土壤中大豆种子中的 MPAA 浓度显著降低至 44%。AC 改良对降低水稻和大豆中的 AA 是有效的。
