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EPA (ENVIRONMENTAL PROTECTION AGENCY) METHOD STUDY 16, METHOD 606--PHTHALATE ESTERS
Citation:
Millar, J., R. Thomas, AND H. Schattenberg. EPA (ENVIRONMENTAL PROTECTION AGENCY) METHOD STUDY 16, METHOD 606--PHTHALATE ESTERS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/4-84/056 (NTIS PB84211275), 1984.
Description:
This report describes the results obtained and data analysis from an interlaboratory method study of EPA Method 606 (Phthalate Esters). The method is designed to analyze for six phthalate esters: dimethyl phthalate, diethyl phthalate, di-n-butyl phthalate, benzylbutyl phthalate, bis-2-ethylhexyl phthalate, and di-n-octyl phthalate. The study design required the analyst to dose six waters with each of six mixtures of the six phthalates. The six dosing levels represented three Youden pairs, one each at a low, an intermediate, and a high level. A total of 16 laboratories participated in the study. The method was studied to estimate the accuracy and precision that can be expected, including effects on accuracy and precision of analysis of different matrices. In addition, results of method detection limit and analytical curve studies and qualitative assessments of the method based upon comments by the participating laboratories are included.