超声及超声电化学法合成纳米材料 - 一般工业 - 论文摘要 论文摘要怎么写,论文摘要范文,毕业论文摘要,摘要范文 - Powered by Discuz! icroscopy,HRTEM)和红外光谱(FT-IR)来表征。所得到的金纳米颗粒(直径约为3nm)是通过利用抗坏血酸(Ascorbicacid,AA)作为还原剂来还原氰化金钾(KAu(CN)2)得到的。这些金颗粒在PEG的存在下自组装成为胡须状超结构
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用抗坏血酸作为还原剂时,DALF和DALFH释放铁速率几乎相同。
Using a reducer of ascorbic acid, similar rates of iron release from both DALFH and DALF were observed.
用甲醇对油样中l -抗坏血酸棕榈酸酯进行提取,对提取物在酸性条件下水解,用水解产物对2,6 -二氯酚靛酚钠溶液进行滴定。
L-ascorbyl palmitate in the methanol extract is hydrolyzed under acid condition, and 2, 6-dichlorophenol indophenol sodium solution is titrated with the hydrolysate.
第二部分,用脂肪酶催化l -抗坏血酸与硬脂酸直接酯化合成L - AS。
The second part, synthesized L-AS by a direct esterification from L-ascorbic acid and stearic acid by lipase-catalyzed.
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