GB/T 36700.8-2018Chemicals—Guidance on hazard classification to the aquatic environment—Part 8:Guidance on transformation/dissolution of metals and metal compounds in aqueous media (English PDF)

Foreword

GB/T 36700 "Chemical Aquatic Environmental Hazard Classification Guidance" is divided into the following eight parts.

--- Part 1. Introduction;

--- Part 2. Unified classification method;

---Part 3. Aquatic toxicity;

--- Part 4. Degradation;

--- Part 5. Bioconcentration;

--- Part 6. Quantitative structure activity relationship (QSAR);

--- Part 7. Classification of metals and metal compounds;

--- Part 8. Guidance for the conversion/dissolution of metals and metal compounds in aqueous media.

This part is the eighth part of GB/T 36700.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

Introduction

This part of GB/T 36700 provides guidance on how to perform conversion/dissolution tests, which are intended for standard laboratory conditions.

Determination of the rate at which metals and sparingly soluble metal compounds form ions and metal solubles in aqueous media that represent the natural environmental conditions of nature degree. The results of the assay can be used to assess acute and chronic aquatic toxicity. Compare metal ions produced by conversion or dissolution in a standard aqueous medium Degree, as well as standard ecotoxicity data (acute and chronic toxicity values) obtained from metal salt solutions, for metals and sparingly soluble metal compounds Classification of acute and chronic aquatic toxicity. For the method of using the obtained results to classify aquatic environmental hazards, see GB/T 36700.7.

1 Scope

This part of GB/T 36700 specifies the basic principle for determining the conversion/dissolution test method for metals and metal compounds in aqueous media.

Test substance information, equipment and reagents, test preparation, test conditions, test procedures, and treatment and test reports of test results.

This section applies to the guidance for the classification of chemical aquatic environmental hazards involving the conversion/dissolution of metals and metal compounds in aqueous media. This section does not apply to organometallic compounds.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 16125 Large cockroach acute toxicity test method

ASTME 729-96 Standard Guide for Very Toxic Toxicity Tests on Fish, Large Invertebrates, and Amphibians (Standard Guideforconductingacutetoxicitytestsontestmaterialswithfishes,macroinvertebrates,andam- Phiibians)

3 Principle