| 聚乙二醇萃取—络天青S光度法测定原油及润滑油中的铝 |
| |
| 引用本文： | 吴丽香,张起凯,邵凤琴,霍秀丽. 聚乙二醇萃取—络天青S光度法测定原油及润滑油中的铝[J]. 理化检验(化学分册), 2001, 37(2): 73-74,77 |
| |
| 作者姓名： | 吴丽香 张起凯 邵凤琴 霍秀丽 |
| |
| 作者单位： | 抚顺石油学院应用化学系. |
| |
| 摘 要： | 以聚乙二醇 -硫酸铵 -铝试剂体系萃取分离干扰离子 ,采用络天青 (CAS) -溴化十六烷基三甲基胺 (CTMAB)为显色体系测定原油中的铝。试验了测定条件及萃取分离干扰离子的条件。测定范围在 0～ 1 0 μg/ 2 5ml,ε64 5nm=4.95× 1 0 4 L· mol-1· cm-1,合成样品回收率为 97.3%～1 0 2 .7% ,原油分析结果的相对标准偏差≤ 2 .6%。该方法灵敏简便 ,整个萃取操作具有安全、无毒、快速的优点。
|
| 关 键 词： | 原油 光度法 络天青S 铝 聚乙二醇 萃取 润滑油 测定方法 石油 |
| 文章编号： | 1001-4020(2001)02-0073-02 |
POLYGLYCOL EXTRACTION-PHOTOMETRIC DETERMINATION OF ALUMINUM IN CRUDE OIL |
| |
| WU Li-xiang,ZHANG Qi-kai,SHAO Feng-qin,HUO Xiu-li. POLYGLYCOL EXTRACTION-PHOTOMETRIC DETERMINATION OF ALUMINUM IN CRUDE OIL[J]. Physical Testing and Chemical Analysis Part B:Chemical Analgsis, 2001, 37(2): 73-74,77 |
| |
| Authors: | WU Li-xiang ZHANG Qi-kai SHAO Feng-qin HUO Xiu-li |
| |
| Abstract: | Photometric Determination of aluminum with chrome azurol S in the presence of CTMAB is reported. Interferences of the co-existing ions is eliminated by the extraction with PEG-(NH4)2SO4-Aluminon system. The optimum conditions for the extraction and for the photometric determination were studied thoroughly.Beer's law is obeyed in the range of 0～10μg of Al(Ⅱ) per 25ml of solution. The apparent molar absorptivity is found to be 4.95×104L·mol-1·cm-1 at 645nm. Recoveries found by the standard addition method were in the range of 97.3%～102.7%. The RSD's for crude oil samples were found to be less than 2.6%. The reported method is sensitive, simple, rapid, safe and nontoxic. |
| |
| Keywords: | Crude oil Photometry Chrome azurol S Aluminum Polyglycol Extraction |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
