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本文利用自己研制的仪器,对原子荧光测汞法的最佳实验条件进行了探讨,以便使该法更趋完善。实验得出,在最佳条件下,该法的检出极限为2ppt,相对标准偏差为2.1％。 (一)试剂与仪器汞标准溶液:含汞100μg/ml。用时准确稀释成含汞l0ng/ml。氯化亚锡溶液:10％。硫酸溶液:3N。仪器装置:自制。在YYG-77型冷原子荧光测汞仪的基础上进行了改进:增大了仪器
In this paper, using the instrument developed by ourselves, the best experimental conditions of atomic fluorescence mercury determination were discussed in order to make the law more perfect. Experiments show that under the best conditions, the detection limit of the method is 2ppt, the relative standard deviation of 2.1%. (A) reagents and equipment Mercury standard solution: mercury 100μg / ml. Precisely diluted with mercury l0ng / ml. Stannous chloride solution: 10%. Sulfuric acid solution: 3N. Equipment: homemade. On the basis of YYG-77 cold atomic fluorescence mercury detector, it has been improved: