1659-1321 1659-1321 S1659-13212019000100012 10.15517/am.v30i1.32478 Costa Rica Costa Rica Costa Rica 00 04 2019 00 04 2019 30 1 179 194

2006 2004 37 55-60 2016 10 863-7 AOAC (Association of Official Analytical Chemist) 1998 16 2015 39 131-40 2003 27 2 2 69-73 2010 59 1 1 20-9 2004 2011 29 283-91 2005 16 29-36 2004 87 4238-46 2003 2010 34 237-50 2010 62 980-4 2004 33 1866-75 2013 2008 99 4346-54 2017 37 2 2 171-8 2010 56 1 1 26-33 2002 96 83-102 2011 43 215-20 2003 27 1 1 79-89 2011 2015 5 778-90 2008 2 2005 7 1 1 1-2 2012 2001 3 13 13 1-5 1996 57 347-58 2013 68 20-32 2017 11 1 1 52-73 2017 28 3 2009 33 1-15 2015 9 2 2 65-90 2010 130 95-109 1981 2010 69 323-9 2016 2005 2010 3 2 2 187-208 2005 109-15 NRC (National Research Council) 2001 7 2008 21 387-97 2012 64 382-91 2014 20 48-54 2002 2 180-9 2013 18 83-7 2001 165-210 2004 1991 74 3583-97 2005 16 215-23 2014 38 133-45 2010 34 43-52 2013 2004 131-42 2009 33 147-53 2004 4 258-74 2010 127 1-10