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近年来,国产测汞仪(如590型,CG—1型,F—732型等)已广泛地应用于卫生、环保等部门。该类测汞仪具有价格便宜,操作简便,灵敏度高等优点。但是,在实际使用中,由于仪器构造过于简单,再加上分析人员调整使用不当,常常造成测定结果的精密度不高,分析误差较大,以致该方法难以进一步推广应用。 应用冷原子吸收法测汞,其测定结果的准确性,重现性受到许多因素的影响。目前,对于这些影响因素已有不少经实验已确定。PING—KAY HOW等人提出用新型静态冷原子吸收法测汞。他们对测汞仪的结构做了改进,提高了灵敏度。经过实验,他们认为溶液中酸解质的
In recent years, domestic mercury analyzer (such as 590, CG-1, F-732, etc.) has been widely used in health, environmental protection and other departments. Mercury analyzer of this type has the advantages of cheap price, easy operation and high sensitivity. However, in practice, due to the simple structure of the instrument and the improper adjustment by the analyst, the precision of the determination result is often not high and the analysis error is large, so that the method is difficult to be further popularized and applied. Cold atomic absorption spectrometry is used to determine the accuracy and reproducibility of the determination results by many factors. At present, quite a number of these factors have been experimentally determined. PING-KAY HOW, who proposed a new type of static cold atomic absorption spectrometry mercury. They improved the structure of the mercury analyzer and increased its sensitivity. After experimentation, they think that the solution is acidic