http://legismex.mty.itesm.mx/secc_inter/SW-846/3665.pdf
TABLEOF CONTENTS 4.2 SAMPLEPREPARATIONMETHODS 4.3 …
WitrynaAll thes e materials must be d emonstrated to be free from interferences under the conditions of the analysis, by analyzing reagent blanks. 4.0 APPARATUS AND MATERIALS 4.1 Gas chromatograph - An analy tical system complete with a gas chromatograph suitable for on-column and split/splitless injection, and all necessary … Witryna22 wrz 2024 · 【食品检测标准】EPA Method 8275A.pdf,METHOD 8275A SEMIVOLATILE ORGANIC COMPOUNDS (PAHs AND PCBs) IN SOILS/SLUDGES AND SOLID WASTES USING THERMAL EXTRACTION/GAS CHROMATOGRAPHY/MASS SPECTROMETRY (TE/GC/MS) 1.0 SCOPE AND … framework7 load page but not active
METHOD 8040A PHENOLS BY GAS CHROMATOGRAPHY …
WitrynaHowever, the recovery of phenols may be optimize d by using Method 3520 and performing the initial extraction at the acid pH. 4.0 APPARATUS AND MATERIALS 4.1 Continuous liquid-liquid extractor - Equipped with p olytetrafluoroethylene (PTFE) or glass connect ing joints and stopcocks requiring no lubrication (Kontes 584200-0000, … Witryna4.1.2.1 Column 1: Supelcoport (100/120 mesh) coated with ... (Sec. 8.3) . Method 3500 indicates the proper procedure for preparing these surrogates. 6.0 SAMPLE COLLECTION, PRESERVATION, AND HANDLING 6.1 See the introductory material to this chapter, Organic Analytes, Sec. 4.1. Extracts must be stored under refrigeration … WitrynaMethod 5035A - US Environmental Protection Agency . SHOW MORE . SHOW LESS . ePAPER READ ... blancett 2 inch flow meter