Analysis system and method for impurity components in perfluoropropane

An analysis system for impurity components in perfluoropropane, comprising the following steps:

• a gas sample connection phase:
• setting interface states of a first ten-way switching valve and a second ten-way switching valve to a first connection mode, and setting an interface state of a six-way switching valve to a first connection state, wherein the first connection mode is that a first port of the ten-way switching valve communicates with a tenth port, a second port communicates with a third port, a fourth port communicates a fifth port, a sixth port communicates with a seventh port, and an eighth port communicates with a ninth port;
• the first connection state of the sixth-way switching valve is that a first port of the six-way switching valve communicates with a sixth port, a second port communicates with a third port, and a fourth port communicates with a fifth port;
• introducing a gas sample from the first port of the first ten-way switching valve, and making a first sample loop, a second sample loop and a third sample loop filled with the same amount of gas sample, respectively, wherein the gas sample is a perfluoropropane gas sample comprising impurity components;
• a hydrogen, oxygen, argon, nitrogen, methane and carbon monoxide component detection phase:
• switching the interface state of the first ten-way switching valve to a second connection mode, wherein the second connection mode is that the first port of the ten-way switching valve communicates with the second port, the third port communicates with the fourth port, the fifth port communicates with the sixth port, the seventh port communicates with the eighth port, and the ninth port communicates with the tenth port;
• introducing a first carrier gas from the fourth port of the first ten-way switching valve, enabling the first carrier gas to carry the gas sample in the first sample loop to enter a first gas separation device, and after impurity components which comprise at least one of hydrogen, oxygen, argon, nitrogen, methane or carbon monoxide are separated by the first gas separation device, enabling the gas sample to enter a pulse discharge helium ionization detector for content detection;
• a carbon dioxide component detection phase:
• switching the interface state of the second ten-way switching valve to a second connection mode;
• introducing a second carrier gas from the fourth port of the second ten-way switching valve, enabling the second carrier gas to carry the gas sample in the second sample loop to enter a second gas separation device, and after a merged peak of hydrogen, oxygen, argon, nitrogen, methane and carbon monoxide firstly separated by the second gas separation device is emptied, switching the interface state of the second ten-way switching valve to the first connection mode;
• introducing a third carrier gas from the seventh port of the second ten-way switching valve, and enabling the third carrier gas to carry a carbon dioxide impurity component later separated by the second gas separation device to enter the pulse discharge helium ionization detector for content detection;
• and
• a fluorocarbon component detection phase:
• switching the interface state of the six-way switching valve to a second connection mode, wherein the second connection mode is that the first port of the six-way switching valve communicates with the second port, the third port communicates with the fourth port, and the fifth port communicates with the sixth port;
• introducing a fourth carrier gas from the fifth port of the six-way switching valve, enabling the fourth carrier gas to carry the gas sample in the third sample loop to enter a third gas separation device, and after non-fluorocarbon components firstly separated by the third gas separation device are emptied, switching the interface state of the six-way switching valve to the first connection mode;
• and
• enabling the fourth carrier gas to carry fluorocarbon components later separated by the third gas separation device to enter the pulse discharge helium ionization detector for content detection, wherein the fluorocarbon components comprise carbon tetrafluoride, hexafluoroethane, hexafluoropropylene, heptafluoropropane and perfluorocyclobutane.