查询词典 vitriol

The sample was diluted by water containing a little amount of sodium chloride, and then extracted by hexane, purified by oil of vitriol to decrease impurity. The extracted solution was analyzed by GC-ECD and quantified by external standard method.

试样加水稀释，加入少量氯化钠，再用正己烷提取，浓硫酸净化样品，排除干扰杂质，以GC-ECD测定，外标法定量，六六六和滴滴涕在0.005~0.2μgmL^(-1)范围内，质量浓度与峰面积呈良好的线性关系。

Used thin-layer chromatography, outspread dose were CHC13: MeOH (8.5: 1.5) and CHC13: MeOH (7:1)(with a little ammonia and diethylamine), color reagent was 10% oil of vitriol. Observe the fluorescent spots and color sports.

通过薄层层析色谱的分析，分别用黄酮展开剂CHCl_3∶MeOH(8.5∶1.5)和生物碱展开剂CHCl_3∶MeOH(7∶1)薄层展开后，10％的浓硫酸显色，观察荧光和显色斑点。

The first sulfuric acid in the world was prepared by destructive distillation of green vitriol［ferrous sulfate FeSO4.7H2O］in the second half of 15th century.

世界上最早的硫酸，产生于15世纪后半叶，当时的原料为绿矾石［FeSO4.7H2O］，通过对其加热分解和吸收制出硫酸。

In conclusion, the sample which produced by the first modification method of treatment was in pH value of 4-10, chromium ion density of 10mg/L-100mg/L, absorb temperature of 20 degree Centigrade - 35 degree Centigrade, the surplus of green vitriol is 50% 's operation conditions according to chemistry measure, and the chromium ion has high and steady 's rate of wipe off, all can be more than 99%.

研究表明，改性灰Ⅰ在pH值4～10，六价铬离子浓度10mg/L～100mg/L，吸附温度20℃～35℃，按化学计量比硫酸亚铁余量50％的操作条件下，铬离子有较高且稳定的去除率，达到99％以上。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。