1405-3195 1405-3195 S1405-31952007000200133 Chile Chile 00 03 2007 00 03 2007 41 2 133 139

1988 1 47-51 1993 28 8 8 819-21 AOAC (Association of Official Analytical Chemists) 1984 15 1990 65 5 5 603-10 1994 254 1961 26 253-99 1989 179-250 1968 2 86-122 1992 66-78 1985 152-6 1998 3009 1969 3 1253-61 1996 317 1998 2002 77 551-6 1998 29 437-52 1998 250 2002 72 1 1 35-40 2004 27-8 2006 66 1 1 3-12 1995 253 1991 26 3 3 287-9