Tiezheng Guo

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Stock standard mercury solution #1, 1000 mg/1, was prepared from Merk Tritisol(R). Stock mercury solutions #2 and #3:10 mg/1 and mg/1 respectively, were prepared by further dilution of the stock standard solution #1. Calibration standards at different mercury levels were prepared from stock solutions #2 and #3 by further dilution in 3% v/v HC1. Calibration(More)
A m length of PTFE tubing was placed between the gas-liquid separator and the absorption cell to minimize any water vapour transferred to the cell. A plastic gasliquid separator (B050-7959), equipped with a PTFE membrane filter, placed after the glass type separator was also shown to help reduce water vapour--see figure 3. The use of the second gas ’liquid(More)
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