AOAC-RI ERP Book - FAOM METHOD.pdf

where c is the concentration of the corresponding 13 C-PAH in is the amount of the corresponding 13 & 3$+ DGGHG WR WKH VDPSOH LQ QJ DQG m LV WKH VDPSOH ZHLJKW LQ J %DVHG RQ WKH PHWKRG SURFHGXUH DQG preparation of the calibration standard solutions, c 13C-PAH LV —J / X 13C-PAH LV QJ DQG m IRU WKH WHVW VDPSOHV LV J In the collaborative study, eight concentration levels were used IRU WKH FDOLEUDWLRQ FRUUHVSRQGLQJ WR DQG —J / IRU EHQ]R> a ]pyrene and other lower-level PAHs, to DQG —J / IRU KLJKHU OHYHO 3$+V H[FHSW IRU QDSKWKDOHQH WKDW ZDV SUHVHQW DW DQG —J / &RHI¿FLHQWV RI GHWHUPLQDWLRQ U 2 VKRXOG EH RU JUHDWHU DQG EDFN FDOFXODWHG FRQFHQWUDWLRQV RI WKH FDOLEUDWLRQ VWDQGDUGV VKRXOG QRW H[FHHG “ RI WKHRUHWLFDO )RU ORZHU FRQFHQWUDWLRQ OHYHOV D OLPLWHG FDOLEUDWLRQ FXUYH ZLWKRXW WKH KLJKHU HQG FRQFHQWUDWLRQ SRLQWV PD\ EH XVHG IRU EHWWHU DFFXUDF\ If a well-characterized quadratic relationship occurs, then a best- ¿WWHG TXDGUDWLF FXUYH PD\ EH XVHG IRU FDOLEUDWLRQ 2WKHUZLVH LI WKH EDFN FDOFXODWHG FRQFHQWUDWLRQV H[FHHG “ RI WKHRUHWLFDO normalized signals of the nearest two calibration standards that enclose the analyte signal in the sample can be used to interpolate WKH DQDO\WH FRQFHQWUDWLRQ LQ WKH ¿QDO H[WUDFW 5HIHUHQFHV .DODFKRYD . 3XONUDERYD - 'UDERYD / &DMND 7 .RFRXUHN 9 +DMVORYD - Anal. Chim. Acta 707 ± KWWS G[ GRL RUJ M DFD J. AOAC Int . 98 '2, MDRDFLQW Posted: April 30, 2015 WKH FDOLEUDWLRQ VWDQGDUG VROXWLRQV LQ —J / X 13C-PAH 13C-PAH

7DEOH

, 3$+ DQDO\WHV DQG FRUUHVSRQGLQJ C 3$+V

XVHG IRU 3$+ VLJQDO QRUPDOL]DWLRQ Analyte

13 C -PAH used for signal normalization

Anthracene

Anthracene ( 13 C 6 )

Benz[ a ]anthracene

Benz[ a ]anthracene ( 13 C 6 ) Benzo[ a ]pyrene ( 13 C 4 ) Benzo[ b @ÀXRUDQWKHQH 13 C 6 ) Benzo[ g,h,i ]perylene ( 13 C 12 ) Benzo[ k @ÀXRUDQWKHQH 13 C 6 )

Benzo[ a ]pyrene

Benzo[ b @ÀXRUDQWKHQH Benzo[ g,h,i ]perylene Benzo[ k @ÀXRUDQWKHQH

Chrysene

Chrysene ( 13 C 6 )

Dibenz[ a,h ]anthracene

Dibenz[ a,h ]anthracene ( 13 C 6 )

Fluoranthene

Fluoranthene ( 13 C 6 )

Fluorene

Fluorene ( 13 C 6 )

Indeno[1,2,3- cd ]pyrene

Indeno[1,2,3- cd ]pyrene ( 13 C 6 )

Naphthalene Phenanthrene

Naphthalene ( 13 C 6 ) Phenanthrene ( 13 C 6 )

Pyrene

Pyrene ( 13 C 6 )

1-Methylnaphthalene 2,6-Dimethylnaphthalene 1-Methylphenanthrene 1,7-Dimethylphenanthrene

Naphthalene ( 13 C 6 ) Phenanthrene ( 13 C 6 ) Phenanthrene ( 13 C 6 ) Phenanthrene ( 13 C 6 )

3-Methylchrysene

Chrysene ( 13 C 6 )

© 2015 AOAC INTERNATIONAL

Made with