The highest levels often occur in brown rice, because elements like arsenic accumulate in bran and husk, which are polished off in the processing of white rice. 糙米所含的重金属含量往往最高,这是因为像砷这类元素是在米糠和稻壳中积蓄,在白米的精加工过程中会被碾压脱除。
The investigation results indicate that: ( 1) During the process of waste acid, based on the proposed result of air oxidation flocculent precipitation, arsenic in waste acid can be transformed to high-class white arsenic or arsenic acid copper product. 在污酸处理过程中,用本文研究出的空气氧化絮凝沉淀法可将污酸中的砷转化为一级白砷或商品砷酸铜;
To comprehensively recover and utilize the tailings resource and to lighten the pollution to the environment, tests were made on a combined technology consisting of arsenic separation from sulfur after pretreatment with reagents, white arsenic extraction by roasting and tin separation from the roast slag. 为综合回收利用该尾矿资源,减轻环境污染,研究了加药预处理后硫砷分离、焙烧提炼白砷、烧渣选锡的组合工艺。
Arsenic trioxide ( arsenic trioxide As2O3) is one of effective ingredients of the white arsenic ( a traditional Chinese medicine). 三氧化二砷(arsenictrioxideAs2O3)是传统中药砒霜的有效成分之一。