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近年来,采用表面活性剂以提高钪显色反应灵敏度的报道不少。文献研究的多元络台物灵敏度比其二元络合物都有提高,达到ε1.45×10~5～1.8×10~5。本文比文献的灵敏度提高了46～17%。实验部分一主要试剂及仪器钪标准溶液:含Sc_2O_3100μgml~(-1)和5μg ml~(-1)的5%HCl溶液。缓冲液:称取六次甲基四胺500g用水溶解后,加HCl 2N 100ml,用水稀释至5000ml,摇匀。此溶液pH=6.2,并在酸度计上用HCl(1+1)和氨水校正之。 0.01M PMBP-乙酸丁酯溶液:称取2.78g 1-苯基-3-甲基-4-苯酰基吡唑酮-5溶解于1000 ml乙酸丁
In recent years, the use of surfactants to improve the sensitivity of scandium color reaction of many reports. The sensitivity of multivariate complexes studied in the literature was higher than that of the binary complexes, reaching ε1.45 × 10 ~ 5 ~ 1.8 × 10 ~ 5. The sensitivity of this paper to the literature increased by 46 ~ 17%. Experimental part of a major reagents and equipment Scandium standard solution: containing Sc_2O_3100μgml ~ (-1) and 5μg ml ~ 5% HCl solution. Buffer: Weigh six methyltetramine 500g dissolved in water, add HCl 2N 100ml, diluted with water to 5000ml, shake. The pH of this solution is 6.2 and corrected with acid chloride (1 + 1) and aqueous ammonia on a pH meter. 0.01 M PMBP-butyl acetate solution: 2.78 g of 1-phenyl-3-methyl-4-benzoylpyrazolone-5 was dissolved in 1000 ml of butyl acetate