【摘要】 对不同浸提时间、土液比、浸提剂提取土壤中镉 (Cd)、汞 (Hg)量的影响 ,及各种条件下提取量与水稻吸收相关关系进行研究 ,选择在褐土上土液比 1∶5 ,浸提时间 6 0min ,1mol·L-1NH4 OAc浸提剂提取量表示土壤有效态Cd量较为合适 ;土液比 1∶10 ,浸提时间 30min ,1mol·L-1NH4 OAc浸提剂提取量表示土壤有效态Hg量较为合适更多还原

【Abstract】 This paper compares with the quantities of Cd,Hg extracted by four different extractants; under experimental condition of three different equilibration times and three ratios of soil to solution. The result has shown that the best extractant for available Cd in drab soil was 1 mol·L -1 NH 4OAc, equilibration time was sixty minutes,the ratio of soil to solution was 1∶5; the best extractant for available Hg was 1 mol·L -1 NH 4OAc, equilibration time was 30 minutes,the ratio of soil to solution was 1∶10 in the same soil.更多还原