Standard No.:	GB/T 5750.9-2023
English Name:	Standard examination methods for drinking water—Part 9: Pesticides indices
Chinese Name:	生活饮用水标准检验方法 第9部分：农药指标
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 5750.9-2006 Standard examination methods for drinking water - Pesticides parameters
Target Language:	English
File Format:	PDF
Word Count:	32500 words
Translation Price(USD):	1100.0
Delivery:	via email in 1~5 business day

Foreword This document is drafted in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1 Structure and starting rules for standardized documents This document is GB/T 5750 "Standard Test Methods for Drinking Water" Part 9. GB/T 5750 has issued 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 5750.9-2006 "Standard Test Methods for Drinking Water Pesticide Indicators" compared with GB/T 5750.9-2006, 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 nine test methods (see 8,3,12,2,13,4,14,2,21,2,25.1,36,1,36.2,41.1); c) the deletion of five test methods (see the 2006 version of 1.14.19.111.111.2). Please note that some of the contents of this document may involve patents. The issuing agency of this document does not assume responsibility for identifying patents This document was proposed and attributed by the National Health and Wellness Commission of the People's Republic of China. Introduction GB/T 5750 "Standard Test Methods for Drinking Water" as the recommended national standard for drinking water testing technology and GB 5749 "Drinking Water Sanitation Standards" supporting the important technical support of GB 5749, for the implementation of GB 5749, to carry out health and safety assessment of drinking water to provide test 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 in DDT, six-six-six, lindane, parathion, methyl parathion, endosulfan, malathion, leuconazole, chlorothalonil, acephate, acephate vinegar, methomyl, 2,4-dichlorodiphenyl, coagulantan, poisonous cicada, coupons gozin, oxaliplatin, heptachlor, hexachlorobenzene, pentachlorophenol, fluorobenzoic vein, fluorfen dolphin, deltamethrin vein, fluorin yard vein, fluorobellic vein, chlorpyrifos vein, fluoropropoxy vein Diquat, chlorfenvinphos-methyl coolamide, liguron, metolachlor, chlorfenvinphos-methyl, methomyl cool, cyhalothrin vinegar, cyhalothrin, chlorfenvinphos-methyl, ethephon in water sources and the determination of DDT (capillary column gas chromatography), hexachlorobenzene, lindane (capillary column gas chromatography), parathion (capillary column gas chromatography), methyl parathion (capillary column gas chromatography), endosulfan, malathion ( capillary column gas chromatography), Ralston (capillary column gas chromatography), methomyl (high-pressure liquid chromatography-UV detector, spectrophotometry, high-pressure liquid chromatography-fluorescence detector), methomyl (liquid-liquid extraction gas chromatography), 24-drop (liquid-liquid extraction gas chromatography) diquat (capillary column gas chromatography) Dan (high performance liquid chromatography) poisonous death (liquid-liquid extraction gas chromatography), hidrozine (high performance liquid chromatography), Gan (high performance liquid chromatography) chlorine (liquid-liquid extraction gas chromatography) pentachlorophenol (derivatization gas chromatography, headspace solid-phase microtake gas chromatography) determination method This document applies to the determination of pesticide 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 single) 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 5750.8-2023 Standard test methods for drinking water Part 8: organic matter indicators GB/T 5750.10-2023 Standard test methods for drinking water part 10: disinfection by-products 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 DDT 4.1 Capillary column gas chromatography 4.1.1 Minimum detection mass concentration 5 solid-phase extraction gas chromatography-mass spectrometry Determination by the method described in GB/T 5750.8-2023 15.1 6Luxin Capillary column gas chromatography:Determination according to the method described in 4.1 6 Lindane Capillary column gas chromatography 6.1 Determination by the method described in 4.1 6.2 Solid phase extraction gas chromatography mass spectrometry Determination by the method described in 15.1 of GB/T 5750.8-2023 7 Parathion Capillary column gas chromatography 7.1 7.1.1 Minimum detectable mass concentration The minimum detectable mass of this method are: dichlorvos, 0.012ng; methomyl, 0.025ng; endosulfan, 0.025ng; leuconazole 0.025ng; methyl parathion, 0.025ng; malathion, 0,025ng; parathion, 0.025ng. If 250mL of water sample is taken after extraction, the minimum detectable mass concentrations are: dichlorvos. 0.05g/L; methomyl, 0.1g/L; endosulfan, 0.1g/L; leuconazole, 0.1g/L; methyl parathion, 0.1ug/L; malathion, 0.1ug/L; parathion, 0.1g/L. 7.1.2 Principle Trace organic phosphorus in water by dichloromethane extraction, concentration, quantitative injection into the chromatograph, each organic phosphorus in the column one by one separation, in turn in the flame photometric detector hydrogen-rich flame combustion, the emission of 526n wavelength of the characteristic light. The intensity of light is proportional to the amount of phosphorus contained, and this characteristic light is passed through a filter and detected by a photomultiplier tube for quantitative analysis. 8 Methyl parathion 8.1 Capillary column gas chromatography Determination by the method described in 7.1 8.2 solid-phase extraction gas chromatography-mass spectrometry Determination by GB/T 5750.8-2023 in the method described in 15.1 8.3 Liquid chromatography tandem mass spectrometry 8.3.1 Minimum detection mass concentration The minimum detectable masses of this method are as follows: nortriptyline, 0.002 ng; mantan, 0.003 ng; methyl parathion, 0.004 ng. When 20 l. water samples are directly injected for determination, the minimum detectable mass concentrations are as follows: nortriptyline, 0.10 g/L; mantan, 0.15 g/L; methyl parathion 0.20ug/L. The common coexisting ions and compounds in the water do not interfere with the determination of the 3 compounds This method is only used for the determination of domestic drinking water 8.3.2 Principle The water sample is filtered through a needle-type microporous membrane and fed directly into the sample, and detected by liquid chromatography tandem mass spectrometry with multiple reaction monitoring (MKM) method for the determination of 3 pesticides in domestic drinking water, namely aldicarb, atrazine and methyl parathion, and quantified by external standard method. 9 Internal absorption of phosphorus Capillary column gas chromatography: according to the method described in 7.1 to determine 10 Malathion 10.1 Capillary column gas chromatography Determination by the method described in 7.1 10.2 Solid phase extraction gas chromatography mass spectrometry Determination by the method described in 15.1 of GB/T 5750.8-2023 11 Loctite 11.1 Capillary column gas chromatography Determination according to the method described in 7.1 11.2 solid phase extraction gas chromatography mass spectrometry Determination by the method described in 15.1 of GB/T 5750.8-2023 12 Chlorothalonil 12.1 Solid-phase extraction gas chromatography-mass spectrometry Determination by the method described in GB/T 5750.8-2023 15.1 12.2 Capillary column gas chromatography 12.2.1 Minimum detection mass concentration The minimum detection mass of this method is 0.006ng, if 500L water samples are taken after treatment, the minimum detection mass concentration is 0.12ug / L. This method is only used for the determination of domestic drinking water. 13 methamphetamine 13.1 high performance liquid chromatography a - UV detector 13.1.1 Minimum detection mass concentration The minimum detection mass of this method is 2ng, if the 100mL water sample is taken to determine the minimum detection mass concentration of 0.01mg/L.,, 14 Ao cyanothrin vinegar 14.1 Solid phase extraction gas chromatography mass spectrometry Determination according to the method described in 15.1 of GB/T 5750.8-2023 15 Methoprene 15.1 Liquid-liquid extraction gas chromatography 15.1.1 Minimum detectable mass concentration The minimum detectable masses of this method are: methoprene, 0.1ng; 2,4-drops, 0.03ng. If a water sample of 00mL is taken after treatment, the minimum detectable mass concentrations are: methoprene, 0.5ug/L; 2,4-drops, .15ug/L.

Foreword Introduction 1 Scope 2 Normative reference documents 3 Terms and definitions 4 DDT 5 solid-phase extraction gas chromatography-mass spectrometry 6Luxin 6 Lindane 7 Parathion 8 Methyl parathion 9 Internal absorption of phosphorus 10 Malathion 11 Loctite 12 Chlorothalonil 13 methamphetamine 14 Ao cyanothrin vinegar 15 Methoprene