AOAC SPIFAN Nutrients ERP-Final Review (Oct. 2018) Pubs

2011.14 (SEPTEMBER 2017) MTE-01/03 REPORT

ISO/NP 15151 | IDF 229 FOR ERP USE ONLY DO NOT DISTRIBUTE

Table B.1 — Selected emission wavelengths and second check wavelengths and interferences for determination by ICP-AES. Element Wavelength of emission (nm) Sort of “line” Interfer ence Ca

210.324 211.276 317.933 422.673 324.754 327.395 238.204 259.940 239.563 766.491 769.897 279.800 285.213 257.610 293.306 259.372 588.995 589.592 213.618 214.914 202.548 213.857 360.074 410.237 303.936

Ion Ion Ion Atom Atom Atom

Y

Cu

Ti, Fe

Fe

Ion Ion Ion

K

Atom Atom Ion Atom

Mg

Fe

Mn

Ion Ion Ion

Fe, Mo, Cr, Al, Fe

Na

Atom Atom Atom Atom Ion Atom Ion Atom Atom

Ar

P

Cu, Fe, Mo, Zn Cu, Al, Mg

Zn

P

Y (internal standard) In (internal standard Sr (internal standard)

460.733

Atom

*Other lines of appropriate sensitivity, free of interferences or corrected for interferences in specific matrixes may be as just as acceptable.

B.3

Quantification

B.3.1 General As spectroscopic techniques are not able to measure concentrations directly, but by means of a conversion of the emission signal into concentration, calibration is inevitable. Calibration can be performed by means of a calibration curve. B.3.2 Calibration curve

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