Study on the determination of calcium and magnesium in dolomite;
白云石中钙镁含量的测定研究
Chromium black T (EBT) -emulsifier OP-picric acid system as the indicator of the calcium and magnesium contents and calcium indicator (NN) —emulsifier OP-picric acid system as the indicator of titration are determined.
确定了铬黑T(EBT)—乳化剂OP—苦味酸体系作为配位滴定钙镁含量的指示剂 :钙指示剂 (NN)—乳化剂OP—苦味体系作为配位滴定的指示剂 。
The content of calcium and magnesium for adible(rock) salt in Jiangsu area is very low,so it is hard to determine it by EDTA complexometry.
江苏地区生产的食用(矿)盐中钙、镁含量极低,用EDTA络合滴定法难以检出其准确含量。
In order to control the emission of pollution air from coal combustion, the mechanism of simultaneous reduction of NOx and SO2 emissions by calcium magnesium acetate(CMA) were studied.
为了控制燃煤污染气体的排放,研究了醋酸钙镁脱硫脱硝机理。
Efficiency of sulfur reduction was double when organic calcium was used under(1?000℃) compared to limestone,and reduction efficiency of calcium magnesium acetate was 73.
1000℃下有机钙对长广煤的脱硫率比普通石灰石高1倍以上,其中醋酸钙镁的脱硫效果高达73。
Effectiveness of calcium magnesium acetate(CMA) and calcium acetate(CA) as feasible HF capture were studied by means of fixed bed tube furnaces.
选择醋酸钙镁、醋酸钙2种有机钙为固氟剂,在固定床管式炉上对它们的固氟效果进行了初步研究,并分析了粒径、温度、钙硫比等对试验结果的影响。
Effects of calcium magnesium phosphate and silicon fertilizer on the growth and element uptake of pakchoi in cadmium, lead and zinc contaminated soil;
钙镁磷肥和硅肥对Cd、Pb、Zn污染土壤上小白菜生长和元素吸收的影响
All the four kinds of modifiers lightened the poisoning effect of the heavy metals on Eulaliopsis binata,but varied in effect in the order of calcium magnesium phosphate>(CaCO_3>)organic manure>sea-foam.
4种改良剂缓解污染土壤中重金属对龙须草毒害作用的大小顺序为钙镁磷肥>碳酸钙>有机肥>海泡石。
Sodium salt of humic acid is selected as an adhesive to granulate fused calcium magnesium phosphate in this work.
选用腐植酸钠作为粘合剂，对钙镁磷肥进行造粒，得到的颗粒钙镁磷肥产品达到了出口日本的标准，此法值得推广和应用。