Comparison with other analyte removal techniques

Comparison with other analyte removal techniques 

RECOVERIES (ppm) OF ORGANOPHOSPHORUS HYDRAUEIC FLUIDS (OPS) FROM SPIKED SOIL (RSD, /i = 3) 

OP soil contaminant Soxhiet extraction SFE SFE relative recovery, % ASE ASE relative recovery, % 

Relative recoveries as compared to those obtained with Soxhiet extraction Reproduced with permission of the American Chemical Society 

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Comparison with other analyte removal techniques... 

MALDI is relatively less sensitive to contamination by salts, buffers, detergents, and so on in comparison with other ionization techniques [41], The analyte must be incorporated into the matrix crystals. This process may generally serve to separate in solid phase the analyte from contaminants. However, high concentrations of buffers and other contaminants commonly found in analyte solutions can interfere with the desorption and ionization process of samples. Prior purification to remove the contaminants leads to improvements in the quality of mass spectra. For instance, the removal of alkali ions has proven to be very important for achieving high desorption efficiency and mass resolution. 

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