The technological process of preparation of colloid Sb 2O 5 by oxidation of Sb 2O 3 with hydrogen peroxide using borax as a stabilizer has been investigated. The optimum preparation conditions selected by orthogonal f...The technological process of preparation of colloid Sb 2O 5 by oxidation of Sb 2O 3 with hydrogen peroxide using borax as a stabilizer has been investigated. The optimum preparation conditions selected by orthogonal factorization method as follows m (H 2 O)∶ m (Sb 2 O 3 )=7 5∶1, n (H 2 O 2 )∶ n (Sb 2 O 3 )=3∶1, m (Na 2 B 4 O 7 ·10H 2 O)∶ m (Sb 2 O 3 )=1∶10, 95 ℃, 1 5 h. The conversion of Sb 2 O 3 >95%, light transmittance of colloid >85% and the average diameter of Sb 2 O 5 particles was 50 nm. The colloid Sb 2 O 5 prepared was storage stable without coagulation for more than one year.展开更多
研究了不同质量浓度的硫酸锌和鳌合铁配合施用对苜蓿芽苗菜的生长及其体内锌铁富集情况的影响。结果表明,在不影响芽苗菜生长的情况下,苜蓿芽苗菜中锌铁的含量均随外源锌铁的质量浓度升高而增加,但锌处理浓度为0.6 m g/l时,锌吸收利用...研究了不同质量浓度的硫酸锌和鳌合铁配合施用对苜蓿芽苗菜的生长及其体内锌铁富集情况的影响。结果表明,在不影响芽苗菜生长的情况下,苜蓿芽苗菜中锌铁的含量均随外源锌铁的质量浓度升高而增加,但锌处理浓度为0.6 m g/l时,锌吸收利用率出现明显下降。展开更多
文摘The technological process of preparation of colloid Sb 2O 5 by oxidation of Sb 2O 3 with hydrogen peroxide using borax as a stabilizer has been investigated. The optimum preparation conditions selected by orthogonal factorization method as follows m (H 2 O)∶ m (Sb 2 O 3 )=7 5∶1, n (H 2 O 2 )∶ n (Sb 2 O 3 )=3∶1, m (Na 2 B 4 O 7 ·10H 2 O)∶ m (Sb 2 O 3 )=1∶10, 95 ℃, 1 5 h. The conversion of Sb 2 O 3 >95%, light transmittance of colloid >85% and the average diameter of Sb 2 O 5 particles was 50 nm. The colloid Sb 2 O 5 prepared was storage stable without coagulation for more than one year.