Standard No.:	GB/T 5750.8-2023
English Name:	Standard examination methods for drinking water—Part 8: Organic indices
Chinese Name:	生活饮用水标准检验方法 第8部分：有机物指标
Chinese Classification:	C51    Environmental sanitation
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR; SAC
Issued on:	2023-03-17
Implemented on:	2023-10-1
Status:	valid
Superseding:	GB/T 5750.8-2006 Standard examination methods for drinking water - Organic parameters GB/T 32470-2016 Organic compounds in drinking water—Test methods of geosmin and 2-methylisoborneol
Target Language:	English
File Format:	PDF
Word Count:	112500 words
Translation Price(USD):	3375.0
Delivery:	via email in 1~5 business day

Foreword This document is drafted in accordance with the provisions of GB/T 1.12020 "Guidelines for standardization work Part 1: the structure of standardized documents and drafting rules This document is part 8 of GB/T 5750 "Standard Test Methods for Drinking Water". GB/T 5750 has published the following parts Part 1:General Provisions. Part 2: the collection and preservation of water samples. Part 3: Quality control of water quality analysis. Part 4: sensory properties and physical indicators Part 5: inorganic non-metallic indicators. Part 6: metal and metal-like indicators. Part 7: organic composite indicators. Part 8: organic indicators. Part 9: Pesticide indicators. Part 10: Disinfection by-product indicators. Part 11: Disinfectant indicators. Part 12: Microbiological indicators. Part 13: Radioactive indicators. This document replaces GB/T 5750.8-2006 "drinking water standard test method organic indicators" and GB/T32470-2016 "drinking water odor substances earth odor and 2-methyl isohydric alcohol test method". Among them, GB/T32470-2016 all the contents of this document 76.1, compared with GB/T 5750.8-2006, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) increased the "terms and definitions" (see Chapter 3) b) the addition of 24 test methods (see 4.2,4.3,13,1,15.1,16,2,20,1,48,1,61,1,75,1,75,2,76,1,78.1,78,2_79.1_79.2,80.1,81.1,82,1,83,1,84.1,86,1,88,1,89,1. 90.1). c) Changed 1 test (see 21.2, 18.4 of the 2006 version);) d) deleted 12 tests (see 1,1,3,1,4,1,9,2,12,1,17,1,18,1,18,3,23,1,24,1,37.1, of the 2006 edition 44.1) Please note that some of the contents of this document may relate to patents. The issuer of this document does not assume responsibility for identifying patents. Introduction GB/T 5750 "Standard Test Methods for Drinking Water" as the recommended national standard for drinking water testing technology and GB5749 "Drinking Water Sanitation Standards" supporting the important technical support of GB5749, for the implementation of GB5749, to carry out health and safety assessment of drinking water to provide testing methods. GB / T 5750 consists of 13 parts. Part 1: General Provisions. The purpose is to provide the basic principles and requirements of water quality testing. Part 2: the collection and preservation of water samples. The purpose is to provide water samples collected, preservation, management, transport and sampling quality control of the basic principles, measures and requirements. Part 3: quality control of water quality analysis. The purpose is to provide water quality inspection and testing laboratory quality control requirements and methods Part 4: Sensory traits and physical indicators. The purpose is to provide sensory traits and physical indicators of the corresponding test methods Part 5: inorganic non-metallic indicators. The purpose is to provide inorganic non-metallic indicators of the corresponding test methods Part 6: Metals and metal-like indicators. The purpose is to provide metal and metal-like indicators of the corresponding test methods Part 7: Organic composite indicators. The purpose is to provide a comprehensive index of organic substances corresponding test methods Part 8: organic indicators. The purpose is to provide the corresponding test methods for organic indicators. Part 9: Pesticide indicators. The purpose is to provide the corresponding test methods for pesticide indicators. Part 10: Disinfection by-products 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 the corresponding test methods for microbial indicators Part 13: radioactive indicators. The purpose is to provide the corresponding test methods for radioactive indicators 1 Scope This document describes the domestic drinking water carbon tetrachloride, 1,2-dichloroethane 1,1,1-trichloroethane, vinyl chloride, 1,1-dichloroethylene 1,2 dichloroethylene, trichloroethylene, tetrachloroethylene, benzo[a]flower, acryl coolamine, has been coolamine, di(2-ethyl has been) phthalate, microcystin, ethyl lung, acryl meth, acrolein, epichlorohydrin, benzene, toluene, xylene ethylbenzene, isopropylbenzene, chlorobenzene, 1,2-dichlorobenzene, 1,3-dichlorobenzene, 1,4-dichlorobenzene, trichlorobenzene, tetrachlorobenzene, nitrobenzene, trinitrotoluene, dinitrobenzene, nitrochlorobenzene, dinitrochlorobenzene, chlorobutadiene, styrene, triethylamine, aniline, carbon disulfide, hydrate trap, turpentine, scold, picric acid, butylxanthogenic acid, hexachlorobutadiene, diphenylamine, dichloromethane 1,1- dichloroethane, 1,2-dichloropropane, 1,3-dichloropropane, 2,2-dichloropropane, 1,1,2-trichloroethane, 1,2,3-trichloropropane, 1,1,1,2-tetrachloroethane, 1,1,2,2-tetrachloroethane, 1,2-dio-3-chloropropane, 1,1-dichloropropene, 1,3-dichloropropene 1,2-dioethylene, 1,2-dioethane, 1,2 1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene, propylbenzene, 4-methylisopropylbenzene, butylbenzene, sec-butylbenzene, tert-butylbenzene, pentachlorobenzene, 2-chlorotoluene, 4-chlorotoluene, aubenzene, cai, bisphenol A, hyoscyamine, 2-methylisobutanol, pentachloropropane, acrylic acid, glutaraldehyde, naphthenic acid, anisole, theophyll, perfluorooctanoic acid, perfluorooctane sulfonic acid, dimethyl disulfide, dimethyl trisulfide, polycyclic Aromatic hydrocarbons, polychlorinated biphenyls, carbon tetrachloride in pharmaceuticals and personal care products and water (capillary column gas chromatography) vinyl chloride (capillary column gas chromatography) 1,1-dichloroethene (purge and trap gas chromatography), 1,2-dichloroethene (purge and trap gas chromatography) and [a] flowers, propylene koolamine (gas chromatography) has been endocoumarine, microcystin (high performance liquid chromatography) Acrylaldehyde, Acrylamide, Acrylaldehyde, Benzene (liquid-liquid extraction capillary column gas chromatography), Toluene (liquid-liquid extraction capillary column gas chromatography), Xylene (liquid-liquid extraction capillary column gas chromatography), B (liquid-liquid extraction capillary column gas chromatography), Nitrobenzene, Trinitrotoluene, Dinitrobenzene, Nitrochlorobenzene, Dinitrochlorobenzene, Chlorobutadiene, Styrene (liquid-liquid extraction capillary column gas chromatography) Triethylamine, aniline, carbon disulfide, hydrated fat, turpentine, Vishnu, picric acid, butylxanthic acid, hyoscyamine, 2-methylisocommodol, pentachloropropane, acrylic acid (ion chromatography), glutaraldehyde, naphthenic acid, dimethyl disulfide, dimethyl trisulfide, polycyclic aromatic hydrocarbons, polychlorinated biphenyls determination method. This document applies to the determination of organic matter indicators in drinking water and (or) water source water 2 Normative reference documents The following documents constitute the essential provisions of this document through the normative references in the text. Among them, note the date of the reference document, only the date of the corresponding version applies to this document; do not note the date of the reference document, its latest version (including all the revision of the list) applies to this document. GB/T 5750.1 Standard test methods for drinking water Part 1: General Provisions GB/T 5750.3 standard test methods for drinking water Part 3: quality control of water quality analysis GB/T 5750.10-2023 standard test methods for drinking water Part 10 disinfection by-product indicators GB/T6682 analytical laboratory water specifications and test methods 3 Terms and definitions GB/T 5750.1GB/T 5750.3 defined terms and definitions apply to this document 4 Carbon tetrachloride 4.1 Capillary column gas chromatography 4.1.1 Minimum detection mass concentration The minimum detection mass concentration of this method are: trichloromethane 0.2g / L; carbon tetrachloride.1g / L 4.1.2 Principle The water sample is placed in a sealed headspace bottle, at a certain temperature and after a certain time of equilibrium, trichloromethane and carbon tetrachloride in water escape to the upper space and reach dynamic equilibrium in the gas-liquid phase, at this time, the concentration of trichloromethane and carbon tetrachloride in the gas phase is proportional to its concentration in the liquid phase. Through the determination of trichloromethane and carbon tetrachloride concentration in the gas phase, the concentration of trichloromethane and carbon tetrachloride in the water sample can be calculated. 4.1.3 Reagents or materials 5 1,2-dichloroethane 5.1 purge trap gas chromatography mass spectrometry Determination by the method described in 4.2. 5.2 Headspace capillary column gas chromatography (hydrogen flame detector) Determined by the method described in 21.2 5.3 Headspace capillary column gas chromatography (electron capture detector) Determined by the method described in 4.3. 6 1,1,1-trichloroethane 6.1 Blow-by-trap gas chromatography-mass spectrometry Determination by the method described in 4.2 6.2 Headspace capillary column gas chromatography Determination by the method described in 4.3 7 Vinyl chloride 7.1 Capillary column gas chromatography 7.1.1 Minimum detection mass concentration If 100mL of water sample is taken and 1mL of gas on liquid is taken for chromatographic determination, the minimum detectable mass concentration is 1g/L. 8 1,1-Dichloroethylene 8.1 Purge and trap gas chromatographic method 8.1.1 Minimum detectable mass concentration The minimum detectable mass concentrations for this method are: 1,1-dichloroethylene, 0.02 g/L; trans-1,2-dichloroethylene, 0.02 g/L; cis-1. Impurities in the purge gas, organic matter released from the trap and piping are the main cause of contamination. Therefore, avoid using non-Teflon lines, sealing materials, or flow controllers with rubber components in purge-trap systems. During sampling, processing and transportation, reagent blanks prepared with pure water are required for calibration, and the whole system is frequently baked and purged. 8.1.2 Principle At room temperature, inert gas will be in a special purge bottle of water samples of 1,1-dichloroethylene and other volatile organic compounds blow out, to be measured in the trap adsorption. Then, by thermal desorption of the substances to be measured by the inert gas into the gas chromatograph for separation and determination. 8.1.3 Reagents or materials 8.1.3.1 High purity nitrogen [o(N)>99.999%]. 8.1.3.2 Pure water: chromatographic test without interfering components 8.1.3.3 Ascorbic acid (C.H.O) 9 1,2-Dichloroethylene 9.1 Purge and trap gas chromatography Determination by the method described in 8.1 9.2 Purge-and-trap gas chromatography-mass spectrometry Determined by the method described in 4.2. 9.3 Headspace capillary column gas chromatography Determination by the method described in 4.3 10 Trichloroethylene 10.1 Purge-trap gas chromatography-mass spectrometry Determination by the method described in 4.2 10.2 Headspace capillary column gas chromatography Determination by the method described in 4.3 11 Tetrachloroethylene 11.1 Purge-and-trap gas chromatography-mass spectrometry Determination by the method described in 4.2 11.2 Headspace capillary column gas chromatography Determination by the method described in 4.3 12 Benzo[a]flower 12.1 High performance liquid chromatography (I) 12.1.1 Minimum detectable mass concentration The minimum detection mass of this method is 0.07ng, and if 500 water samples are taken for determination, the minimum detection mass of this method is 1.4ng/L. 12.1.2 Principle Benzo[a]flower and other aromatic hydrocarbons in water can be extracted by cyclohexane, the extract is purified by adsorption of activated alumina, eluted with benzene, concentrated, and then quantified by liquid chromatography - fluorescence detector. 12.1.3 Reagents or materials The reagents and materials used should be blank test, that is, through the entire operation process, to prove the presence of non-interfering substances. All reagents should be filtered through a 0.45um membrane before use. 12.1.3.1 Ultrapure water; resistivity greater than 18.0MQ-cm. 12.1.3.2 Activated alumina: take 250g of 100 mesh 200 mesh neutral alumina (Al0;) for chromatography at 10C activation h, cooled and bottled. bottle, stored in the desiccator, and set aside. 12.1.3.3 Hydrochloric acid solution (1+19): Take 5mL of hydrochloric acid (o2=1.19g/mL), add to 95mL of pure water and mix well. 12.1.3.4 Glass wool: Soak with hydrochloric acid solution (1+19) overnight, then wash with pure water to neutral. Soak with sodium hydroxide solution overnight, wash with pure water to neutral, dry at 105C and set aside. 13 Acryl Coolamine 13.1 High performance liquid chromatography tandem mass spectrometry 13.1.1 Minimum detection mass concentration Take 100mL of water sample after extraction and volume to 10mL to determine the minimum detection mass concentration of 0.020g/L This method is only used for the determination of domestic drinking water 13.1.2 Principle The water sample is purified and enriched by activated carbon solid phase extraction column, and the eluate is concentrated, capacitated and filtered, then separated by liquid chromatography, detected by tandem mass spectrometry, and quantified by isotope internal standard method. 13.1.3 Reagents Unless otherwise specified, the reagents used in this method are analytically pure, and the water used for the experiment is the first grade water specified in GB/T6682. 14 caprolactam 14.1 Gas chromatographic method 14.1.1 Minimum detectable mass concentration The minimum detection mass of this method is 10ng, if 25mL water sample is taken for determination, the minimum detection mass concentration is 0.2mg/L. Under the analytical conditions of this method, cyclohexane, cyclohexanol and cyclohexanone do not interfere with the determination. 14.1.2 Principle Caprolactam in water can be quantified by gas chromatography with a hydrogen flame ionization detector after concentration and dissolution of carbon disulfide. 14.1.3 Reagents or materials 15 bis(2ethylhexyl)phthalate vinegar 15.1 solid phase extraction gas chromatography mass spectrometry 15.11 Minimum detection mass concentration If 1L of water samples are taken for determination, the minimum detectable mass concentrations of this method are: diquat, .2g/L; 2,6-trichlorophenol, 0.40pg/L; hexachlorobenzene, 0,25pg/L; leuconazole, 0,72g/L; pentachlorophenol, 0.99pg/L; lindane, 0,27pg/L; chlorothalonil, 0,42pg/L; methyl parathion, 0.30pg/L; heptachlor 0.34ug/L; malathion, 0.0g/L; toxaphene, 0.25g/L; parathion, 0.30ug/L; DDT, 0.35ug/L; di(2-ethylhexyl) phthalate, 0.41g/L; acephate, 1.01pg/L. This method is only used for the determination of domestic drinking water 15.1.2 Principle The organic matter in the water sample is adsorbed through a large volume solid phase extraction column with polymethacrylic acid cool-styrene as the adsorbent, and eluted with a small amount of methanol, ethyl acetate and dichloromethane, and the eluate is separated and determined by gas chromatography-mass spectrometry after dehydration, purification, concentration and volume fixation. The separation was determined by gas chromatography-mass spectrometry (GC-MS). The retention time and mass spectra of the analytes were used to characterize the analytes, and then quantified by the relative intensities of the quantitative ions of the analytes and the internal standard ions and the standard curve. Each water sample contained a known concentration of the internal standard compound, which was determined by the internal standard calibration procedure. 16 Microcystin 16.1 High performance liquid chromatography 16.1.1 Minimum detectable mass concentration The minimum detectable masses of this method are: microcystin-RR, 6 ng; microcystin-LR, 6 ng. If 5 L of water samples are taken for determination, the minimum detectable mass concentrations are: microcystin-RR, 0.06 g/L; microcystin-LR.06 g/L. 16.1.2 Principle Water samples

Foreword Introduction 1 Scope 2 Normative reference documents 3 Terms and definitions 4 Carbon tetrachloride 5 1,2-dichloroethane 6 1,1,1-trichloroethane 7 Vinyl chloride 8 1,1-Dichloroethylene 9 1,2-Dichloroethylene 10 Trichloroethylene 11 Tetrachloroethylene 12 Benzo[a]flower 13 Acryl Coolamine 14 caprolactam 15 bis(2ethylhexyl)phthalate vinegar 16 Microcystin