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海洋沉积物中重金属元素的监测成为必不可少的内容之一,其中,重金属铅在环境中具有持久性,且毒性较大,所以成为当前海洋环境监测中的重点。尝试用微波消解方法,用氢化物发生-原子荧光光谱法测定海洋沉积物中铅的含量,与传统的微波消解-火焰原子吸收分光光度法测定结果的检出限和重现性进行比较。结果表明,用氢化物发生-原子荧光光谱法测定海洋沉积物的方法重复性和准确性较好,虽不如传统的火焰原子吸收分光光度法,但其操作方法简单,试剂用量少,对环境污染和操作人员伤害少,且使用仪器价格较低廉,可以满足海洋沉积物铅的监测需求。
The monitoring of heavy metal elements in marine sediments has become an indispensable element. Among them, lead in heavy metals is persistent and toxic in the environment, which has become the focus of marine environmental monitoring. The microwave digestion method was used to determine the lead content in marine sediments by hydride generation-atomic fluorescence spectrometry, which was compared with the detection limits and reproducibility of the traditional microwave digestion-flame atomic absorption spectrophotometry. The results showed that the method of determination of marine sediment by hydride generation - atomic fluorescence spectrometry was more reproducible and accurate. Although not as good as the traditional flame atomic absorption spectrophotometry, its method of operation was simple, the amount of reagents used was less, Pollution and operator injury less, and the use of equipment cheaper, to meet the marine lead monitoring needs.