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铅一般以微小的球形状态存在于钢铁中,并发生偏析现象,对钢铁的性能有不良的影响,因此生产部门迫切要求提供快速而简便的测定生铁中铅的方法,以使更好地控制产品质量.测定钢铁中微量铅常用双硫腙比色法,灵敏度虽高,但分离操作繁琐,分析流程冗长.原子吸收分光光度法测铅灵敏度不高,低于0.01%铅时,需预先用甲基异丁酮萃取分离铁.
Lead is generally present in steel in the form of tiny spheres and segregates and adversely affects the performance of the steel. Therefore, there is an urgent need for the production department to provide a quick and easy method for determining lead in pig iron in order to provide better control of the product Determination of trace lead in steel commonly used dithizone colorimetric method, the sensitivity is high, but the tedious separation operation, the analysis process is lengthy.Arsenide absorption spectrophotometry to measure the sensitivity of lead is not high, less than 0.01% lead, the need to pre-use A Isobutyl ketone extraction and separation of iron.