Patent ID: 7140231

Claim:
An evolved gas analyzing method comprising: carrying out a first measurement step, comprising: disposing a first sample having a measurement target material and a non-measurement target material in a sample chamber, heating the first sample to a predetermined temperature; maintaining the predetermined temperature; reducing the atmosphere inside the sample chamber to a predetermined pressure at the predetermined temperature; starting measurement of the amount of gas evolved from the first sample at the predetermined temperature and at the predetermined pressure, the amount of gas evolved being measured in a measurement chamber intercommunicating with the sample chamber; and raising the temperature at a predetermined temperature programmed rate while continuing the measurement of the amount of gas evolved from the first sample to obtain a first detected data set; carrying out a second measurement step, comprising: disposing a second sample of the non-measurement target material in the sample chamber; heating the second sample to the predetermined temperature; maintaining the predetermined temperature; reducing the atmosphere inside the sample chamber to the predetermined pressure at the predetermined temperature; starting measurement of the amount of gas evolved from the second sample at the predetermined temperature and at the predetermined pressure, the amount of gas evolved being measured in the measurement chamber intercommunicating with the sample chamber; and raising the temperature at the predetermined temperature programmed rate while continuing the measurement of the amount of gas evolved from the second sample to obtain a second detected data set; and comparing the first data set with the second data set.