Why is a direct mercury analyser the most popular choice for Hg determination in environmental samples?
As more emphasis is placed on the monitoring of mercury emissions, both private and public institutions are looking at characterizing soil, sediments and waste water samples. Con- taminated soil has to be excavated and remediated, or depending on the level of contamination, disposed of as hazardous waste.
Several methods are available for mercury analysis in environmental samples such as waste water and soil. Most of these methods however, require elaborate preparation procedures that are labor intensive and consequently expensive.
Direct mercury analysis, as described in exam questions bcom 275 week 3 EPA Method 7473, is an alternative to these methods and has been used successfully to determine total mercury in environmental samples.
This technique requires no sample preparation and delivers results in as little as 6 minutes per sample, making it signicantly faster than traditional wet chemistry.
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