1, the production cost of nitrogen is low, because nitrogen is the main component of air, can be separated from the air by air separation method. The production cost of argon is high because argon is a low content in the air, and can be separated from the air only by a special separation process.
2, nitrogen and argon are used for different purposes, which also affects the price. Nitrogen is used in industrial production, food packaging, medical and other fields. Argon gas, on the other hand, is used in welding, metal processing, lighting and other fields. Argon gas is used in many high-tech fields, so the price is high.