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采用国产微晶纤维素膜和滤纸作基质,以乙酸亚铊作重原子微扰剂建立了测定痕量芴和苯并[a]蒽的固体基质室温磷光法。实验表明,MN-C 和 MN-P 两种型号的微晶纤维素膜是比较适宜的基质材料。铊盐和铅盐是很有效的重原子微扰剂,尤以乙酸亚铊最佳。苯并[a]蒽所需要的重原子浓度明显比芴的大,这可能与其较低的三线态能量有关。方法的相对标准偏差小于5%。检出限达 ng/斑点。
A solid matrix lumophore method was developed for the determination of trace fluorene and benzo [a] anthracene by using domestic microcrystalline cellulose membrane and filter paper as matrix and thallium acetate as heavy atom perturbation agent. Experiments show that, MN-C and MN-P two types of microcrystalline cellulose film is a more appropriate matrix material. Thallium and lead salts are very potent heavy atom perturbants, especially thallium acetate. Benzo [a] anthracene requires significantly heavier atomic concentrations than fluorene, which may be related to its lower triplet energy. The relative standard deviation of the method is less than 5%. Detection limit of ng / spot.