Sediment Testing

1. Introduction to Sediments

Sediments are any particles that can be moved by fluid flow and eventually form a layer of solid particles beneath water or other liquids. Rivers, oceans, and lakes all accumulate sediments. Simple gravitational collapses produce sediments such as scree slopes, landslide deposits, and karst collapse features. Each type of sediment has different settling velocities, depending on its size, volume, density, and shape.

2. Scope of Sediment Analysis

Water system sediments, surface sediments, marine sediments, soil sediments, suspended sediments, air-blown sediments, pipeline sediments, river sediments, etc.

3. Sediment Analysis Items

Composition analysis, particle size analysis, elemental analysis, inorganic nitrogen analysis, mercury content analysis, heavy metal speciation analysis, bulk density analysis, settling velocity analysis, moisture content analysis, sulfide analysis, qualitative analysis, etc.

4. Related Standards

"Chemical Analysis Methods for Marine Sediments" G20260-2006

"Sequential Extraction Procedure for 13 Trace Element Species in Soils and Sediments" G25282-2010

"Test for Aerobic and Anaerobic Transformation in the Water-Sediment System for Chemicals" G27853-2011

"Chironomid Toxicity Test in Sediment-Water Systems for Chemicals - Spiking into Water Method" G27858-2011

"Chironomid Toxicity Test in Sediment-Water Systems for Chemicals - Spiking into Sediment Method" G27859-2011

"Determination of Radionuclides in Marine Sediments by Gamma Spectrometry" G30738-2014

"Determination of n-Alkanes in Marine Sediments by Gas Chromatography-Mass Spectrometry" G30739-2014

"Determination of Total Organic Carbon in Marine Sediments by Non-Dispersive Infrared Absorption Method" G30740-2014

"Determination of Volatile Organic Compounds in Soils and Sediments by Headspace/Gas Chromatography-Mass Spectrometry" HJ 642-2013

"Determination of Dioxins in Soils and Sediments by Isotope Dilution/High-Resolution Gas Chromatography-Low-Resolution Mass Spectrometry" HJ 650-2013

"Determination of Acrylonitrile and Acetonitrile in Soils and Sediments by Headspace-Gas Chromatography" HJ 679-2013

"Determination of Mercury, Arsenic, Selenium, Bismuth, and Antimony in Soils and Sediments by Microwave Digestion/Atomic Fluorescence Spectrometry" HJ 680-2013

"Determination of Phenolic Compounds in Soils and Sediments by Gas Chromatography" HJ 703-2014

"Determination of Cobalt in Soils and Sediments by Flame Atomic Absorption Spectrophotometry" HJ 1081-2019

"Determination of 8 Amide Pesticides in Soils and Sediments by Gas Chromatography-Mass Spectrometry" HJ 1053-2019

"Determination of Petroleum Hydrocarbons (C6-C9) in Soils and Sediments by Purge and Trap Gas Chromatography" HJ 1020-2019

"Determination of 13 Anilines and 2 Biphenylamines in Soils and Sediments by Liquid Chromatography-Triple Quadrupole Mass Spectrometry" HJ 1210-2021