The relative influence of derivatization and normalization procedures on the compound-specific stable isotope analysis of nitrogen in amino acids.

Within the last decade, applications of compound-specific stable isotope analysis of nitrogen (δ We examined the relative effect of three normalization procedures, (1) internal reference calibration, (2) compound-specific calibration, and (3) scale-normalization, on the accuracy and precision of δ The overall accuracy and precision of δ