Device and method for simultaneously measuring mercury, cadmium, zinc and lead

A device for simultaneously measuring mercury, cadmium, zinc, and lead, comprising:

• a gas generating device;
• a quartz analysis tube connected to the gas generating device;
• wherein the quartz analysis tube comprises a sample heating zone, a high-temperature packing zone and a quartz collimating tube arranged in a listed sequence;
• an atomic absorption detection device AA1 arranged behind the quartz analysis tube;
• wherein the atomic absorption detection device comprises an atomic absorption detector, a flame, and a light source;
• a quartz catalytic tube arranged behind the atomic absorption detection device;
• wherein the quartz catalytic tube comprises a flame buffer zone and an adsorption packing zone arranged in sequence;
• and
• an atomic absorption mercury measuring device arranged behind the quartz catalytic tube;
• wherein the atomic absorption mercury measuring device comprises a mercury enrichment tube, an atomic absorption detector AA2 and an air pump arranged in a listed sequence.