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GB/T 5750.6-2023: Standard examination methods for drinking water - Part 6: Metal and metalloid indices
Status: Valid GB/T 5750.6: Evolution and historical versions
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Standard examination methods for drinking water - Part 6: Metal and metalloid indices
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GB/T 5750.6-2023
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Standard examination methods for drinking water -- Metal parameters
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Basic data | Standard ID | GB/T 5750.6-2023 (GB/T5750.6-2023) | | Description (Translated English) | Standard examination methods for drinking water - Part 6: Metal and metalloid indices | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | C51 | | Classification of International Standard | 13.060 | | Word Count Estimation | 129,112 | | Date of Issue | 2023-03-17 | | Date of Implementation | 2023-10-01 | | Older Standard (superseded by this standard) | GB/T 5750.6-2006 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 5750.6-2023: Standard examination methods for drinking water - Part 6: Metal and metalloid indices
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ICS 13.060
CCSC51
National Standards of People's Republic of China
Replaces GB/T 5750.6-2006
Standard test methods for drinking water
Part 6.Metal and metalloid indicators
Released on 2023-03-17
2023-10-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
Introduction IV
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Aluminum 1
5 Iron 13
6 Manganese 15
7 Bronze 19
8 Zinc 25
9 Arsenic 27
10 Selenium 38
11 Mercury 46
12 Cadmium 51
13 Chromium (hexavalent) 54
14 Lead 59
15 Silver 61
16 Molybdenum 64
17 Cobalt 66
18 Nickel 67
19 Barium 69
20 Titanium 70
21 Vanadium 72
22 Antimony 73
23 Beryllium 76
24 Thallium 79
25 Sodium 81
26 Tin 85
27 Tetraethyl lead 89
28 Ethyl mercury chloride 91
29 Boron 101
30 Asbestos 102
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.
This document is part 6 of GB/T 5750 "Standard test methods for drinking water". GB/T 5750 has been published in the following parts.
--- Part 1.General;
--- Part 2.Collection and preservation of water samples;
--- Part 3.Water quality analysis quality control;
--- Part 4.Sensory properties and physical indicators;
--- Part 5.Inorganic non-metallic indicators;
--- Part 6.Metal and metalloid indicators;
--- Part 7.Comprehensive indicators of organic matter;
--- Part 8.Organic matter indicators;
--- Part 9.Pesticide indicators;
--- Part 10.Disinfection by-product indicators;
--- Part 11.Disinfectant indicators;
--- Part 12.Microbiological indicators;
--- Part 13.Radioactivity indicators.
This document replaces GB/T 5750.6-2006 "Standard test methods for metal indicators of drinking water" and is consistent with GB/T 5750.6-2006
Compared with the previous version, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) Added “Terms and Definitions” (see Chapter 3);
b) 10 test methods were added (see 9.5, 9.6, 10.5, 13.2, 28.1, 28.2, 28.3, 29.1, 30.1, 30.2);
c) One test method was changed (see 4.5, 1.5 of the.2006 edition);
d) 13 test methods were deleted (see 4.2.2, 4.2.3, 4.2.4, 5.2, 5.4, 6.4, 7.4, 7.5, 9.3, 11.3, 11.4,
17.1, 20.3).
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 is proposed and coordinated by the National Health Commission of the People's Republic of China.
This document was drafted by. Institute of Environmental and Health-related Product Safety, Chinese Center for Disease Control and Prevention, Beijing Center for Disease Control and Prevention,
Shandong Provincial Urban Water Supply and Drainage Water Quality Monitoring Center, Chengdu Center for Disease Control and Prevention, Hunan Provincial Center for Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention
Center for Disease Control and Prevention, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, and Nanjing University.
The main drafters of this document are. Shi Xiaoming, Yao Xiaoyuan, Zhang Lan, Han Jiayi, Qian Le, Jin Ning, Yue Yinling, Zhao Can, Liu Liping, Jia Ruibao, Zhang Qinlong,
Feng Jiali, Liu Deye, Li Hongyan, Chen Shaozhan, Xin Xiaodong, Li Changxiong, Chen Dongyang, Li Haoran, Wang Lianhong, Li Jie, Liu Hualiang, Shi Xiaoxia.
The previous versions of this document and the documents it replaces are as follows.
---First published in 1985 as GB/T 5750-1985, first revised in.2006 as GB/T 5750.6-2006;
---This is the second revision.
Introduction
GB/T 5750 "Standard Test Methods for Drinking Water" is a recommended national standard for drinking water testing technology.
The supporting work of the "Sanitary Standard for Drinking Water" is an important technical support for GB 5749, and is an important technical support for the implementation of GB 5749 and the development of the sanitation of drinking water.
Safety evaluation provides testing methods.
GB/T 5750 consists of 13 parts.
--- Part 1.General. The purpose is to provide the basic principles and requirements for water quality inspection.
--- Part 2.Collection and preservation of water samples. The purpose is to provide a basis for water sample collection, preservation, management, transportation and sampling quality control.
These principles, measures and requirements.
--- Part 3.Water quality analysis quality control. The purpose is to provide quality control requirements and methods for water quality inspection and testing laboratories.
--- Part 4.Sensory properties and physical indicators. The purpose is to provide corresponding test methods for sensory properties and physical indicators.
--- Part 5.Inorganic non-metallic indicators. The purpose is to provide corresponding test methods for inorganic non-metallic indicators.
--- Part 6.Metal and metalloid indicators. The purpose is to provide corresponding test methods for metal and metalloid indicators.
--- Part 7.Comprehensive indicators of organic matter. The purpose is to provide corresponding test methods for comprehensive indicators of organic matter.
--- Part 8.Organic matter indicators. The purpose is to provide corresponding test methods for organic matter indicators.
--- Part 9.Pesticide indicators. The purpose is to provide corresponding test methods for pesticide indicators.
--- Part 10.Disinfection by-product indicators. The purpose is to provide the corresponding test methods for disinfection by-product indicators.
--- Part 11.Disinfectant indicators. The purpose is to provide the corresponding test methods for disinfectant indicators.
--- Part 12.Microbiological indicators. The purpose is to provide corresponding test methods for microbiological indicators.
--- Part 13.Radioactive indicators. The purpose is to provide the corresponding test methods for radioactive indicators.
Standard test methods for drinking water
Part 6.Metal and metalloid indicators
1 Scope
This document describes the content of aluminum, iron, manganese, copper, zinc, arsenic, selenium, mercury, cadmium, chromium (hexavalent), lead, silver, molybdenum, cobalt, nickel, barium, titanium, vanadium,
Determination methods for antimony, beryllium, thallium, sodium, tin, tetraethyl lead, ethyl mercuric chloride, boron, asbestos and determination methods for aluminum, iron, manganese, copper, zinc, arsenic, selenium, mercury,
Cadmium, chromium (hexavalent), lead, silver, molybdenum, cobalt, nickel, barium, titanium, vanadium, antimony, beryllium, thallium, sodium, tin, tetraethyl lead, ethylmercuric chloride (purge and trap gas chromatography-
Atomic fluorescence spectrometry), boron and asbestos determination methods.
This document is applicable to the determination of metal and metalloid indicators in drinking water and source water.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 5750.1 Standard test methods for drinking water Part 1.General
GB/T 5750.3-2023 Standard test methods for drinking water Part 3.Quality control of water quality analysis
GB/T 5750.5-2023 Standard test methods for drinking water Part 5.Inorganic non-metallic indicators
GB/T 6682 Specifications and test methods for water used in analytical laboratories
3 Terms and definitions
The terms and definitions defined in GB/T 5750.1 and GB/T 5750.3-2023 apply to this document.
4.Aluminum
4.1 Chrome Azure S spectrophotometry
4.1.1 Minimum detection concentration
The minimum detection mass of this method is 0.20μg. If 25mL of water sample is taken, the minimum detection mass concentration is 0.008mg/L.
Copper, manganese and iron in water interfere with the determination. 1mL ascorbic acid (100g/L) can eliminate the interference of 25μg copper and 30μg manganese. 2mL thiol
Acetic acid (10 g/L) can eliminate the interference of 25 μg of iron.
4.1.2 Principle
In the pH range of 6.7 to 7.0, aluminum reacted with octylphenyl ether (OP) and cetylpyridinium bromide (CPB).
Chrome azure S reacts to form blue-green quaternary micelles, which are quantified by colorimetry.
4.1.3 Reagents
4.1.3.1 Chrome azuro blue S solution (1 g/L). weigh 0.1 g of Chrome azuro blue S (C23H13O9SCl2Na3) and dissolve it in 100 mL of ethanol solution (1 1)
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