Mercury sensor for detecting, differentiating, and measuring organic and inorganic mercury compounds

A sensor assembly for detecting, speciating, and measuring a concentration of mercury analytes in a fluid stream, the assembly including:

• a housing for containing elements of the sensor assembly;
• a sensor array configured to detect and measure the concentration of the mercury analytes in the fluid sample and produce an electrical output signal indicative of a type and concentration of the mercury analytes detected;
• an inlet channel through which a sample is drawn into the housing and into contact with the sensor array;
• an outlet channel through which the sample is expelled from the housing;
• and
• a sampler located within the housing for drawing the fluid sample into the housing via the inlet channel and expelling the sample via the outlet channel.