2. Materials and Methods
2.1. Instrumentation and Chemicals
The Tricell DMA 80.3 Direct Mercury Analyzer (Mile-stone, Inc., Shelton, CT) was utilized for mercury meas-urements. Quartz sample boats of 1.5 ml volume were obtained from the same vendor. The auto-sampler of the DMA 80.3 instrument had forty slots that could be filled with sample boats. A stock mercury solution (Accustan-