339 / 471
(
b
) Calculate the ratio of the analyte response to that of the internal standard.
(
c
) Run a linear regression analysis using the ratio of each pesticide at five different levels with no
weighting or 1/x weighting, where x = concentration.
(
d
) Measure the peak area of each pesticide found in the sample and the peak area of corresponding
internal standard.
(
e
) Calculate the amount of each pesticide in the solution injected from the standard curve.
(
f
) Calculate the amount of each pesticide present in the sample.
Test results should be retained to two decimal places or four significant digits.
Reference:
J. AOAC Int
. (future issue)
Posted: January 20, 2015
Candidates for 2016 Method of the Year
279