文献记载,钢中痕量元素铅、锡、铋、锑、砷和银等对钢材性能都有影响。文献指出,含量超过20ppm的铅或6ppm的铋,会导致奥氏体不锈钢的热展性下降。 为了确保钢材质量,必须对钢中的上述痕量元素进行分析。直接用火焰原子吸收法测定,往往灵敏度不够;采用萃取预富集技术, Literature records, the trace elements in steel lead, tin, bismuth, antimony, arsenic and silver have an impact on the performance of the steel. The literature states that lead in excess of 20 ppm or bismuth in 6 ppm leads to a decrease in the hot-dip of austenitic stainless steels. In order to ensure the quality of steel, the above-mentioned trace elements in steel must be analyzed. Direct flame atomic absorption spectrometry, often not enough sensitivity; the use of extraction pre-enrichment technology,