Method(s)  # Identified  # Quantified  Year  Reference
Multiple  51  51  1971  Putnam [105]
GC-MS  52  0  1976  Lawson [85]
GC-MS  72  72  1978  Gates [106]
GC-MS  36  36  1989  Hoffman [107]
GC-MS  137  0  1990  Liebich [108]
GC-MS  131  95  1991  Shoemaker [84]
GC-MS  69  69  1994  Guneral [56]
GC-MS  75  75  1996  Matsumoto [109]
ICP-MS  33  33  2005  Goulle [110]
SPE/NMR  73  0  2008  Yang [40]
SPE/LC/NMR  72  0  2008  Rezzi [78]
LC-MS/NMR  50  0  2008  Law [34]
LC-MS  93  93  2009  Guo [111]
NMR  50  50  2009  Shaykhutdinov [112]
GC-MS-MS  48  48  2011  Kvitvang [113]
SPE-GC-MS  79  0  2011  Silva [114]
LC-MS  167  0  2011  Guo [115]
NMR  42  42  2011  Saude [116]
NMR/GC-MS  77  0  2012  Zhang [117]
LC-MS  219 (25 listed)  0  2012  Van der Kloet [118]
GC-TOF/LC-MS  261  0  2012  Cheng [119]
GC-MS  258  0  2012  Roux [83]
GCxGC-TOF-MS  294  0  2012  Rocha [120]