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GB/T 23349-2020: Determination of arsenic, cadmium, chromium, lead and mercury contents for fertilizers
Status: Valid GB/T 23349: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 23349-2020 | English | 279 |
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Determination of arsenic, cadmium, chromium, lead and mercury contents for fertilizers
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GB/T 23349-2020
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| GB/T 23349-2009 | English | 639 |
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Ecological index of arsenic, cadmium, lead, chromium and mercury for fertilizers
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GB/T 23349-2009
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PDF similar to GB/T 23349-2020
Basic data | Standard ID | GB/T 23349-2020 (GB/T23349-2020) | | Description (Translated English) | Determination of arsenic, cadmium, chromium, lead and mercury contents for fertilizers | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G20 | | Classification of International Standard | 65.080 | | Word Count Estimation | 15,191 | | Date of Issue | 2020-11-19 | | Date of Implementation | 2021-06-01 | | Older Standard (superseded by this standard) | GB/T 23349-2009 | | Quoted Standard | HG/T 2843; NY/T 1978-2010 | | Regulation (derived from) | National Standard Announcement No. 26 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies methods for determining the content of arsenic, cadmium, chromium, lead and mercury in fertilizers. This standard applies to the determination of arsenic, cadmium, chromium, lead and mercury content in fertilizers. The detection limit of this standard method is: arsenic: silver diethyldithiocarbamate spectrophotometry is 0.8 mg/kg, atomic fluorescence spectrometry is 0.1��g/kg, cadmium is 0.4 mg/kg, and chromium is 0.1 mg/ kg, lead is 1 mg/kg, mercury | GB/T 23349-2020: Determination of arsenic, cadmium, chromium, lead and mercury contents for fertilizers
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of arsenic, cadmium, chromium, lead and mercury contents for fertilizers
ICS 65.080
G20
National Standards of People's Republic of China
Replace GB/T 23349-2009
Determination of arsenic, cadmium, chromium, lead, mercury content in fertilizer
2020-11-19 released
2021-06-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 23349-2009 "Ecological indicators of arsenic, cadmium, lead, chromium, and mercury in fertilizers". Compared with GB/T 23349-2009,
In addition to editorial changes, the main technical changes are as follows.
---The detection limit of the method has been increased (see Chapter 1);
---Deleted limit requirements and inspection rules (see Chapter 3 and Chapter 5 of the.2009 edition);
---The atomic fluorescence spectrometry method of arsenic and mercury has been added (see 3.2.2 and 3.6.2).
This standard was proposed by the China Petroleum and Chemical Industry Federation.
This standard is under the jurisdiction of the National Standardization Technical Committee for Fertilizers and Soil Conditioners (SAC/TC105).
Drafting organizations of this standard. Shanghai Research Institute of Chemical Industry Co., Ltd., Guizhou Batian Ecological Engineering Co., Ltd., China-Arab Fertilizer Co., Ltd.
The company, Shanghai Chemical Industry Institute Testing Co., Ltd., Shandong Product Quality Inspection Research Institute.
The main drafters of this standard. Zhang Minghong, Tan Zhanao, Wang Lianjun, Wang Kaiyue, Feng Junqiang, Zhang Wei, Chen Hongjun, Yang Xu, Yin Jiong, Zhang Juan.
The previous versions of the standard replaced by this standard are as follows.
---GB/T 23349-2009.
Determination of arsenic, cadmium, chromium, lead, mercury content in fertilizer
Warning---The hydrochloric acid used in this standard is corrosive, and nitric acid is corrosive and oxidizing. Some processes in the test method may be
Lead to dangerous situations, the operator should take appropriate safety and protective measures. This standard does not point out all possible safety issues. user
It is the responsibility to take appropriate safety and health measures and to ensure compliance with the conditions stipulated by relevant national laws and regulations.
1 Scope
This standard specifies methods for determining the content of arsenic, cadmium, chromium, lead and mercury in fertilizers.
This standard applies to the determination of arsenic, cadmium, chromium, lead and mercury content in fertilizers.
The detection limit of this standard method is. arsenic. 0.8mg/kg for silver diethyldithiocarbamate spectrophotometry, and atomic fluorescence spectrometry for
0.1μg/kg, cadmium is 0.4mg/kg, chromium is 0.1mg/kg, lead is 1mg/kg, mercury. hydride generation-atomic absorption spectrophotometry is
0.1mg/kg, 0.05μg/kg by atomic fluorescence spectrometry.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.
For undated references, the latest version (including all amendments) applies to this document.
HG/T 2843 Commonly used standard titration solution, standard solution, reagent solution and indicator solution for chemical analysis of fertilizer products
NY/T 1978-2010 Fertilizer determination of mercury, arsenic, cadmium, lead, and chromium content
3 Test method
The preparation of reagents, water and solutions used in this standard shall be in accordance with HG/T 2843 when specifications and preparation methods are not indicated.
3.1 Preparation of sample solution
3.1.1 Sample preparation
Prepare according to the corresponding product standard.
3.1.2 Reagents and materials
3.1.2.1 Hydrochloric acid.
3.1.2.2 Nitric acid.
3.1.2.3 Hydrochloric acid solution. 15.Add 1 volume of hydrochloric acid to 5 volumes of water.
3.1.3 Instruments
3.1.3.1 Generally laboratory equipment.
3.1.3.2 Electric heating plate, the power is 1.8kW~2.4kW.
3.1.4 Preparation of sample solution
Make parallel determinations of two samples.
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