Field instrudmentation in atomicspectroscopy

摘要

The techniques of field analytica chemstry(FAC) have the potential to reduce both analysis time and cost by providing analytical data on site while eliminating the need for sample collection and transport. These methods could be o fconsiderable interest in the fields of environmental monitoringand industrial process control.Much of FAC is accomplished through theuse of portable analytical instruments.Theemphasis of this review was on field-portable atomic spectrometry,with particular focus upon two techniques:laser-induced breakdown spectroscopy(LIBS) andtungstencoil atomic absorption spectrometry(W Coil AAS).LIBS and W Coil AAS have been described in detail with special attention to instrumentation,analytica performance,applications and examples of portable devices.Thetwo techniques were compared and found to be complimentary.Competing technology,not necessarily based upon atomic spectrometry,was alos briefly discussedin orderto provide a glimpse of he overall picture of FAC techniques used for thedetermination of metals.These rival techniques include X-ray fluoescence spectrometry(XRF),immunoassay,capillary electrophoresis(CE),andelectrochemical sensors.