论文部分内容阅读
胶束增溶分光光度法测定铝,已有不少报导。本文用溴化癸基三甲铵(简写作DeTMAB)作为铝-铬天青S(简写作Al-CAS)显色反应的增敏剂,获得很高的灵敏度,其表观摩尔吸光系数达1.8×10~5。该体系容许的pH范围较宽,稳定性较好,测铝的检量线的线性范围较宽,做了超基性岩标准试样中铝的测定,获得较满意的结果。一试剂与仪器 DeTMAB,北京化工厂,0.20M水溶液; CAS,上海试剂厂,0.020%水溶液;按资料介绍的方法测定其浓度为2.26×10~(-4)M; 铝标准溶液:1.00微克/毫升,准确称取纯铝箔(99.999%),先溶于NaOH液,再加HCl酸化,配成
Micellar solubilization spectrophotometry for the determination of aluminum has been reported. In this paper, decyltrimethylammonium bromide (abbreviated as DeTMAB) was used as sensitizer for the color reaction of aluminum-chromium azure S (abbreviated as Al-CAS), and the high sensitivity was obtained. The apparent molar absorptivity reached 1.8 × 10 ~ 5. The system allows a wide range of pH, good stability, measuring the linear range of the calibration curve of aluminum is broader, made of ultrabasic rock samples of aluminum determination, to obtain more satisfactory results. A reagent and instrument DeTMAB, Beijing Chemical Plant, 0.20M aqueous solution; CAS, Shanghai Reagent Factory, 0.020% aqueous solution; According to the data described method to determine the concentration of 2.26 × 10 -4 M; aluminum standard solution: 1.00 μg / Ml, accurately weighed pure aluminum foil (99.999%), first dissolved in NaOH solution, plus HCl acidification, dubbed