Progress in analytical methods of composition in nickel-base alloy pipes

The progress of analytical methods was reviewed for chemical composition in nickel-base alloy pipes in recent years. The basic characteristics and application instances of existing determination methods were introduced, including atomic emission spectrometry, atomic absorption spectrometry, spectrophotometry, atomic fluorescence spectrometry, X-ray fluorescence spectrometry, infrared absorption spectroscopy and mass spectrometry. The advantages, disadvantages and applicable scopes of these methods were compared. The development trend of this field was also outlined as follows: from chemical method and single element analysis to instruments analysis and simultaneous determination of multi-elements. © 2011 ASCE.