Abstract:

BACKGROUND: The characteristics of magnetic balance include compact structure, stable performance, convenient experiment and so on, magnetic balance is suitable for the laboratory research of magnetic determination.
OBJECTIVE: To establish determination methods for magnetic susceptibility of trace magnetic drug samples, according to the discussion on the magnetic balance determination of trace sample magnetic susceptibility.
METHODS: The magnetic susceptibility is an important index of describing the magnetic drugs, magnetic balance determination is a conventional method for magnetic susceptibility. Sample tube was processed into magnetic resistance correction, the standard samples with known magnetic susceptibility and the test sample were determined the weight changes at the same temperature and magnetic field, magnetic susceptibility of the test trace samples was obtained.
RESULTS AND CONCLUSION: Compared the determined value with the theoretical value, the difference is 1.96%∠ 2%. Magnetic balance has advantages such as simple equipment and easy operation, but needs a large number of samples. Through the principle and method analysis of magnetic balance determination for magnetic susceptibility of trace magnetic sample, a determination method of trace samples is established, thus providing possibility for determination of trace samples using magnetic balance.