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GB/T 41685-2022Safety thresholds of Cd、Pb、Cr、Hg、As in soil for wheat production (English PDF)

小麦安全生产的土壤镉、铅、铬、汞、砷阈值

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 14, 2022

Implementation date

May 1, 2023

Scope

GB/T 41685-2022 is the English-translated version of 小麦安全生产的土壤镉、铅、铬、汞、砷阈值.

GB/T 41685-2022 fixes the soil thresholds for cadmium, lead, chromium, mercury and arsenic that allow wheat to be produced safely, and describes the detection methods that go with them.

It applies to the evaluation and management of soil environmental quality for safe wheat production. A threshold is defined as the maximum limit for those five elements in soil that keeps wheat grain safe to eat, and the thresholds themselves are tabulated for four ranges of soil pH.

The detection methods are taken from the standards it cites, among them GB/T 17141 for lead and cadmium, GB/T 22105.1 and GB/T 22105.2 for total mercury and total arsenic, HJ 491 for chromium and NY/T 1377 for soil pH. Issued on 14 October 2022, it has applied since 1 May 2023.

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Document preview — GB/T 41685-2022

National Standard of the People's Republic of China

ICS: 13.080
Classification: B 10

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

Foreword
1 Scope
2 Normative references
3 Terms and Definitions GB/T 18834 and the following
4 Threshold

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 of Standardization Documents" drafted.

1 Scope

This document specifies the thresholds for soil cadmium, lead, chromium, mercury, and arsenic for safe wheat production, and describes the corresponding detection methods.

This document is applicable to the evaluation and management of soil environmental quality for safe wheat production.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 17141 Determination of Soil Quality Lead and Cadmium Graphite Furnace Atomic Absorption Spectrophotometry

GB/T 18834 Soil Quality Vocabulary

GB/T 22105.1 Determination of Total Mercury, Total Arsenic and Total Lead in Soil Mass Atomic Fluorescence Method Part 1: Determination of Total Mercury in Soil

GB/T 22105.2 Determination of total mercury, total arsenic and total lead in soil mass Atomic fluorescence method Part 2: Determination of total arsenic in soil

HJ491 Determination of copper, zinc, lead, nickel and chromium in soil and sediments by flame atomic absorption spectrophotometry

NY/T 395 Technical Specifications for Monitoring Farmland Soil Environmental Quality

NY/T 1377 Determination of Soil pH

3 Terms and Definitions

GB/T 18834 and the following terms and definitions apply to this document.

3.1 Threshold

Maximum limits for cadmium, lead, chromium, mercury, and arsenic in soils that ensure the safety of wheat grains to eat.

4 Threshold

The soil cadmium, lead, chromium, mercury, and arsenic thresholds for safe wheat production should meet the requirements in Table 1.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

HJ491

Similar standards

GB/T 14550-2026|GB/T 47213-2026|GB/T 47295-2026|GB/T 47297-2026|GB/T 47305-2026|GB/T 47310-2026

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