ASTM D7572-15
Standard Guide for Recovery of Aqueous Cyanides by Extraction from Mine Rock and Soil

Standard No.

ASTM D7572-15

Release Date

2015

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D7572-15(2022)

Latest

ASTM D7572-15(2022)

Scope

5.1 This guide is intended as a means for obtaining an extract from mine rock and soil samples to measure cyanide content in the aqueous portion of the sample on a dry weight basis. Cyanide is analyzed in mine rock and soil extracts for measurement of cyanide concentration; however, improper sample collection and extraction can result in significant positive or negative bias.

5.2 This guide is designed to mobilize aqueous cyanides present in the solids, so that the resulting extract can be used to assess leachate that could potentially be produced from mine rock or soil.

5.3 This guide is not intended to simulate actual site leaching conditions.

5.4 This guide produces extracts that are amenable to the determination of trace cyanides. When trace cyanides are being determined, it is especially important that precautions be taken in sample preservation, storage, and handling to avoid possible contamination of the extracts.

5.5 This guide uses a comparative test method and is intended for use as a routine method for monitoring mine rock and soils. It is assumed that all who use this guide will be trained analysts capable of performing it skillfully and safely. It is expected that work will be performed in a properly equipped laboratory applying appropriate quality control practices such as those described in Guide D3856.

5.6 This guide identifies proper methods for obtaining mine rock and soil samples for the specific purpose of measuring cyanide concentrations.

1.1 This guide is applicable for the collection, extraction, and preservation of extracts from mine rock and soil samples for the analysis of cyanide in the extracts. Responsibilities of field sampling personnel and the laboratory are indicated.

1.2 The sampling, preservation, and extraction procedures described in this guide are recommended for the analysis of total cyanide, available cyanide, weak acid dissociable cyanide, and free cyanide by Test Methods D2036, D4282, D4374, D6888, D6994, D7237, and D7284. The information supplied in this guide can also be applied to other analytical methods for cyanide, for example, US EPA Method 335.4.

1.3 The procedure options methods appear in the following order:

ASTM D7572-15 Referenced Document ASTM D1129 Standard Terminology Relating to Water ASTM D1193 Standard Specification for Reagent Water ASTM D1293 Standard Test Methods for pH of Water ASTM D2036 Standard Test Methods for Cyanides in Water ASTM D3694 Standard Practices for Preparation of Sample Containers and for Preservation of Organic Constituents ASTM D3856 Standard Guide for Good Laboratory Practices in Laboratories Engaged in Sampling and Analysis of Water ASTM D4282 Standard Test Method for Determination of Free Cyanide in Water and Wastewater by Microdiffusion ASTM D4374 Standard Test Methods for Cyanides in Water-Automated Methods for Total Cyanide, Weak Acid Dissociable Cyanide, and Thiocyanate ASTM D4840 Standard Guide for Sample Chain-of-Custody Procedures ASTM D4841 Standard Practice for Estimation of Holding Time for Water Samples Containing Organic and Inorganic Constituents ASTM D5847 Standard Practice for Writing Quality Control Specifications for Standard Test Methods for Water Analysis ASTM D6696 Standard Guide for Understanding Cyanide Species ASTM D6888 Standard Test Method for Available Cyanides with Ligand Displacement and Flow Injection Analysis (FIA) Utilizing Gas Diffusion Separation and Amperometric Detection ASTM D6994 Standard Test Method for Determination of Metal Cyanide Complexes in Wastewater, Surface Water, Groundwater and Drinking Water Using Anion Exchange Chromatography with UV Detection ASTM D7237 Standard Test Method for Free Cyanide and Aquatic Free Cyanide with Flow Injection Analysis (FIA) Utilizing Gas Diffusion Separation and Amperometric Detection ASTM D7284 Standard Test Method for Total Cyanide in Water by Micro Distillation followed by Flow Injection Analysis with Gas Diffusion Separation and Amperometric Detection ASTM D7365 Standard Practice for Sampling, Preservation and Mitigating Interferences in Water Samples for Analysis of Cyanide ASTM D7511 Standard Test Method for Total Cyanide by Segmented Flow Injection Analysis, In-Line Ultraviolet Digestion and Amperometric Detection ASTM D7572-15 history 2022 ASTM D7572-15(2022) Standard Guide for Recovery of Aqueous Cyanides by Extraction from Mine Rock and Soil 2015 ASTM D7572-15 Standard Guide for Recovery of Aqueous Cyanides by Extraction from Mine Rock and Soil 2013 ASTM D7572-13 Standard Guide for Recovery of Aqueous Cyanides by Extraction from Mine Rock and Soil 2011 ASTM D7572-11a Standard Guide for Recovery of Aqueous Cyanides by Extraction from Mine Rock and Soil After Remediation of Process Releases 2011 ASTM D7572-11 Standard Guide for Recovery of Aqueous Cyanides by Extraction from Mine Rock and Soil After Remediation of Process Releases 2009 ASTM D7572-09 Standard Guide for Recovery of Aqueous Cyanides by Extraction from Mine Rock and Soil After Remediation of Process Releases Copyright ©2024 All Rights Reserved