Determination of As, Cd, Cu, Hg and Pb in biological samples by modern electrothermal atomic absorption spectrometry

摘要: Abstract Pollution from heavy metals has increased in recent decades and become an important concern for environmental agencies. Arsenic, cadmium, copper, mercury lead are among the trace elements that have greatest impact carry highest risk to human health. Electrothermal atomic absorption spectrometry (ETAAS) long been used element analyses over past few years, main constraints of (AAS) methods, namely matrix interferences provoked high background interferences, reduced. The use new, more efficient modifiers situ trapping methods stabilization pre-concentration these analytes, progress control atomization temperatures, new designs atomizers advances correct spectral permitted improvement sensitivity, increase detection power, reduction sample manipulation, reproducibility results. These enhanced utility determination at μg L−1 levels, especially difficult matrices, giving rise greater reproducibility, lower economic cost ease pre-treatment compared other methods. Moreover, introduction resolution continuum source (HR-CS-ETAAS) facilitated direct solid sampling, reducing noise opening possibility achieving even rapid quantitation some elements. incorporation flow injection analysis (FIA) systems automation pre-treatment, as well chemical vapor generation renders into a feasible option As Hg food studies wherein large numbers samples can be rapidly analyzed. A relatively inexpensive approach with low consumption provide additional advantages this technique reaches figures merit equivalent Inductively coupled plasma mass (ICP-MS). Herein is presented overview applications As, Cd, Cu, Pb biological drawn last decade.