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我们利用流动注射分析具有分析速度快、精密度好、操作简单等优点,建立了汞的流动注射冷原子吸收光谱测定方法。主要仪器;WFX—1B 型原子吸收分光光度计,LZ1010型蠕动泵,YSV—1型多功能进样阀,空心阴极灯。本文所述条件下,采样为600μl,在每小时100个样次的分析速度下达到0.15μg/l 汞的检出限,对100μg/l 水平汞标准液测定11次,标准偏差为4.2%样品分析回收率在89%以上,在测定时用样量少节省大量试剂,整个测定过程在密闭系统中进行,减少污染,保护了操作人员的身心健康。冷原子吸收测定水和食品中汞已作标准分析方法。无论动态法和静态法一般操作误差都较大,需要大量样品,分析时间较长,产生汞蒸气污染。危害操作人员身心健康。我们在前人工作基础上,利用流动注射分析具有分析速度快,精密度好,操作简单等优
Using flow injection analysis with the advantages of fast analysis, good precision and simple operation, we established a method for the determination of mercury by flow injection and cold atomic absorption spectrometry. Main instruments; WFX-1B atomic absorption spectrophotometer, LZ1010 peristaltic pump, YSV-1-type multi-function injection valve, hollow cathode lamp. Under the conditions described herein, the sample was 600 μl, which gave a detection limit of 0.15 μg / l mercury at an analytical speed of 100 samples per hour, 11 determinations at 100 μg / l of mercury standard with a standard deviation of 4.2% Analytical recovery of more than 89%, in the determination of sample size to save a lot of reagents, the entire determination of the process carried out in a closed system to reduce pollution and protect the operator’s physical and mental health. Cold atomic absorption spectrometry for determination of mercury in water and foodstuffs has been the standard method of analysis. Both dynamic and static methods generally have large operational errors, require a large number of samples, require longer analysis times, and produce mercury vapor contamination. Endanger the operator’s physical and mental health. Based on the work of predecessors, we use flow injection analysis with the advantages of fast analysis, good precision and simple operation