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Oil and Grease Analysis in water and wastewater

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Introduction  Standard Operating Procedure (SOP) for Oil and Grease Analysis in Water and Wastewater based specifically on APHA 5520B (Standard Methods for the Examination of Water and Wastewater, 23rd Edition). This SOP follows the U.S. EPA's recommended format for SOPs (EPA QA/G-6) to ensure clarity, consistency, and compliance with environmental standards. APHA 5520B uses liquid-liquid extraction (LLE) with n-hexane followed by gravimetric analysis to determine oil and grease concentrations. 1. Purpose This SOP describes the procedures for analyzing oil and grease in water and wastewater samples using liquid-liquid extraction with n-hexane and gravimetric determination, as outlined in APHA 5520B. The method quantifies total oil and grease (n-hexane extractable material) in aqueous samples. 2. Scope and Applicability Scope: This SOP applies to the gravimetric determination of oil and grease in water and wastewater samples (e.g., surface water, industrial effluents, municipal wast...
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Demystifying Total Organic Carbon (TOC):

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Measurement of Dissolved Oxygen

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