Valid

GB/T 45422-2025Chemicals — Surface water-sediment Misgurnus anguillicaudatus toxicity test (English PDF)

化学品 地表水系统-沉积物中泥鳅毒性试验

Open the GB/T 45422-2025 preview as PDF

Preview — first pages of GB/T 45422-2025 (full document: 18 pages)

This is a limited preview

Buy now to download the full PDF (18 pages)

Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

February 28, 2025

Implementation date

September 1, 2025

Scope

GB/T 45422-2025 is the English-translated version of 化学品 地表水系统-沉积物中泥鳅毒性试验.

GB/T 45422-2025 is the Chinese national standard covering what a chemical does to a bottom-dwelling fish rather than one in open water — the spiked sediment and the overlying water that make up the test system, the formulated sediment composition and the water chemistry held through the exposure, the loach living where the pore water carries the real dose, the observations and the median lethal concentration drawn from them, and the quality control and reporting. Volatile substances are outside its scope. First edition, in force from 1 September 2025. Issued on 28 February 2025, it has been in force since 1 September 2025.

Document preview — GB/T 45422-2025

National Standard of the People's Republic of China

ICS
13.300
Classification
A 80

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Contents

  • Foreword
  • 1 Scope
  • 2 Normative references
  • 3 Terms and definitions
  • 3.1 Overlying water
  • 3.2 interstitial water or pore water
  • 3.3 formulated sediment
  • 3.4 Spiked sediment
  • 3.5 median lethal concentration; LC50

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting is required.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document was proposed and coordinated by the National Technical Committee on Hazardous Chemicals Management Standardization (SAC/TC 251).

This document was drafted by: Chinese Academy of Environmental Sciences, Nankai University, China Inspection and Testing (Tianjin) Co., Ltd., Nanchang University, Ocean University of China, Nanjing University.

The main drafters of this document are: Liu Zhengtao, Li Ji, Zhu Lingyan, Zhang Yanfeng, Wang Xiaonan, Yan Zhenguang, Chen Huiming, Zhou Lili, Ge Gang, Li Zhengyan, Wang Shanghong, Wang Zunyao, Sun Cheng, and Zheng Xin.

Chemicals Surface water systems ﹘ Sediment Loach Toxicity test

1 Scope

This document describes the test principle, test substance information, instrumentation, test equipment, and test methods for the chemical surface water system-sediment toxicity test of loach Test systems, test procedures, quality assurance and quality control, data and reporting.

This document is applicable to the testing of toxic effects of chemicals on benthic organisms such as loaches in surface water environments, but not to the testing of volatile substances.

2 Normative references

GB/T 5750.4

GB/T 11901

GB 17378.5

3 Terms and definitions

The terms and definitions defined in HJ 1257 and the following apply to this document.

3.1 Overlying water

The water in the test container that is above the sediment.

3.2 interstitial water or pore water

Water that occupies the spaces inside sediment or soil particles.

3.3 formulated sediment

A mixture of materials used to simulate the composition of natural sediments.

Note. Also called reconstructed or synthetic sediments.

3.4 Spiked sediment

Sediment to which the test substance was added.

3.5 median lethal concentration; LC50

The concentration of the target test chemical that causes half of a group of test organisms to die.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 18 pages — is available in the English PDF.

Referenced standards

Editions of GB/T 45422

EditionTitleRevisionStatus
GB/T 45422-2025Chemicals - Surface water-sediment Misgurnus anguillicaudatus toxicity testcurrent editionCurrent

This page sells the current edition, GB/T 45422-2025. Earlier editions are listed for reference only.

How to Buy GB/T 45422-2025

  1. 1Add to cart. Click the "Buy GB/T 45422-2025" button on this page. You can add more standards before checkout.
  2. 2Checkout. Enter your email and billing details. Payment is processed securely by Stripe (cards, Apple Pay, Google Pay supported).
  3. 3Instant delivery (0–9 sec). Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
  4. 4Invoice included. A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.

Related Standards

English PDF
18 pages
Instant delivery (0–9 sec)
Invoice included
View Cart

Secure payment via Stripe

Payments accepted

VisaMastercardAmerican ExpressApple PayGoogle PayStripe

GB/T 45422-2025

$320.00

$270.00for partners